FIX (backups): Fix passing encypted password to .pgpass

This reverts commit 02c735bc5a.

.github/workflows/ci-release.yml

@@ -127,6 +127,7 @@ jobs:
           TEST_GOOGLE_DRIVE_CLIENT_SECRET=${{ secrets.TEST_GOOGLE_DRIVE_CLIENT_SECRET }}
           TEST_GOOGLE_DRIVE_TOKEN_JSON=${{ secrets.TEST_GOOGLE_DRIVE_TOKEN_JSON }}
           # testing DBs
+          TEST_POSTGRES_12_PORT=5000
           TEST_POSTGRES_13_PORT=5001
           TEST_POSTGRES_14_PORT=5002
           TEST_POSTGRES_15_PORT=5003
@@ -136,6 +137,8 @@ jobs:
           # testing S3
           TEST_MINIO_PORT=9000
           TEST_MINIO_CONSOLE_PORT=9001
+          # testing Azure Blob
+          TEST_AZURITE_BLOB_PORT=10000
           # testing NAS
           TEST_NAS_PORT=7006
           # testing Telegram
@@ -154,6 +157,7 @@ jobs:
           timeout 60 bash -c 'until docker exec dev-db pg_isready -h localhost -p 5437 -U postgres; do sleep 2; done'
 
           # Wait for test databases
+          timeout 60 bash -c 'until nc -z localhost 5000; do sleep 2; done'
           timeout 60 bash -c 'until nc -z localhost 5001; do sleep 2; done'
           timeout 60 bash -c 'until nc -z localhost 5002; do sleep 2; done'
           timeout 60 bash -c 'until nc -z localhost 5003; do sleep 2; done'
@@ -163,6 +167,9 @@ jobs:
           # Wait for MinIO
           timeout 60 bash -c 'until nc -z localhost 9000; do sleep 2; done'
 
+          # Wait for Azurite
+          timeout 60 bash -c 'until nc -z localhost 10000; do sleep 2; done'
+
       - name: Create data and temp directories
         run: |
           # Create directories that are used for backups and restore
@@ -185,7 +192,7 @@ jobs:
       - name: Run Go tests
         run: |
           cd backend
-          go test ./internal/...
+          go test -p=1 -count=1 -failfast ./internal/...
 
       - name: Stop test containers
         if: always()

Dockerfile

@@ -77,7 +77,7 @@ ENV APP_VERSION=$APP_VERSION
 # Set production mode for Docker containers
 ENV ENV_MODE=production
 
-# Install PostgreSQL server and client tools (versions 13-17)
+# Install PostgreSQL server and client tools (versions 12-18)
 RUN apt-get update && apt-get install -y --no-install-recommends \
   wget ca-certificates gnupg lsb-release sudo gosu && \
   wget -qO- https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - && \
@@ -85,7 +85,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   > /etc/apt/sources.list.d/pgdg.list && \
   apt-get update && \
   apt-get install -y --no-install-recommends \
-  postgresql-17 postgresql-18 postgresql-client-13 postgresql-client-14 postgresql-client-15 \
+  postgresql-17 postgresql-18 postgresql-client-12 postgresql-client-13 postgresql-client-14 postgresql-client-15 \
   postgresql-client-16 postgresql-client-17 postgresql-client-18 && \
   rm -rf /var/lib/apt/lists/*
 

README.md

@@ -9,7 +9,7 @@
   [![Docker Pulls](https://img.shields.io/docker/pulls/rostislavdugin/postgresus?color=brightgreen)](https://hub.docker.com/r/rostislavdugin/postgresus)
   [![Platform](https://img.shields.io/badge/platform-linux%20%7C%20macos%20%7C%20windows-lightgrey)](https://github.com/RostislavDugin/postgresus)
   
-  [![PostgreSQL](https://img.shields.io/badge/PostgreSQL-13%20%7C%2014%20%7C%2015%20%7C%2016%20%7C%2017%20%7C%2018-336791?logo=postgresql&logoColor=white)](https://www.postgresql.org/)
+  [![PostgreSQL](https://img.shields.io/badge/PostgreSQL-12%20%7C%2013%20%7C%2014%20%7C%2015%20%7C%2016%20%7C%2017%20%7C%2018-336791?logo=postgresql&logoColor=white)](https://www.postgresql.org/)
   [![Self Hosted](https://img.shields.io/badge/self--hosted-yes-brightgreen)](https://github.com/RostislavDugin/postgresus)
   [![Open Source](https://img.shields.io/badge/open%20source-❤️-red)](https://github.com/RostislavDugin/postgresus)
   
@@ -40,13 +40,13 @@
 - **Precise timing**: run backups at specific times (e.g., 4 AM during low traffic)
 - **Smart compression**: 4-8x space savings with balanced compression (~20% overhead)
 
-### 🗄️ **Multiple Storage Destinations**
+### 🗄️ **Multiple Storage Destinations** <a href="https://postgresus.com/storages">(view supported)</a>
 
 - **Local storage**: Keep backups on your VPS/server
 - **Cloud storage**: S3, Cloudflare R2, Google Drive, NAS, Dropbox and more
 - **Secure**: All data stays under your control
 
-### 📱 **Smart Notifications**
+### 📱 **Smart Notifications** <a href="https://postgresus.com/notifiers">(view supported)</a>
 
 - **Multiple channels**: Email, Telegram, Slack, Discord, webhooks
 - **Real-time updates**: Success and failure notifications
@@ -54,17 +54,31 @@
 
 ### 🐘 **PostgreSQL Support**
 
-- **Multiple versions**: PostgreSQL 13, 14, 15, 16, 17 and 18
+- **Multiple versions**: PostgreSQL 12, 13, 14, 15, 16, 17 and 18
 - **SSL support**: Secure connections available
 - **Easy restoration**: One-click restore from any backup
 
+### 🔒 **Backup Encryption** <a href="https://postgresus.com/encryption">(docs)</a>
+
+- **AES-256-GCM encryption**: Enterprise-grade protection for backup files
+- **Zero-trust storage**: Encrypted backups are useless so you can keep in shared storages like S3, Azure Blob Storage, etc.
+- **Optionality**: Encrypted backups are optional and can be enabled or disabled if you wish
+- **Download unencrypted**: You can still download unencrypted backups via the 'Download' button to use them in `pg_restore` or other tools.
+
+### 👥 **Suitable for Teams** <a href="https://postgresus.com/access-management">(docs)</a>
+
+- **Workspaces**: Group databases, notifiers and storages for different projects or teams
+- **Access management**: Control who can view or manage specific databases with role-based permissions
+- **Audit logs**: Track all system activities and changes made by users
+- **User roles**: Assign viewer, member, admin or owner roles within workspaces
+
 ### 🐳 **Self-Hosted & Secure**
 
 - **Docker-based**: Easy deployment and management
 - **Privacy-first**: All your data stays on your infrastructure
 - **Open source**: Apache 2.0 licensed, inspect every line of code
 
-### 📦 Installation
+### 📦 Installation <a href="https://postgresus.com/installation">(docs)</a>
 
 You have three ways to install Postgresus:
 
@@ -118,8 +132,6 @@ This single command will:
 Create a `docker-compose.yml` file with the following configuration:
 
 ```yaml
-version: "3"
-
 services:
   postgresus:
     container_name: postgresus
@@ -149,9 +161,9 @@ docker compose up -d
 6. **Add notifications** (optional): Configure email, Telegram, Slack, or webhook notifications
 7. **Save and start**: Postgresus will validate settings and begin the backup schedule
 
-### 🔑 Resetting Admin Password
+### 🔑 Resetting Password <a href="https://postgresus.com/password">(docs)</a>
 
-If you need to reset the admin password, you can use the built-in password reset command:
+If you need to reset the password, you can use the built-in password reset command:
 
 ```bash
 docker exec -it postgresus ./main --new-password="YourNewSecurePassword123" --email="admin"
@@ -169,4 +181,4 @@ This project is licensed under the Apache 2.0 License - see the [LICENSE](LICENS
 
 ## 🤝 Contributing
 
-Contributions are welcome! Read [contributing guide](contribute/README.md) for more details, prioerities and rules are specified there. If you want to contribute, but don't know what and how - message me on Telegram [@rostislav_dugin](https://t.me/rostislav_dugin)
+Contributions are welcome! Read <a href="https://postgresus.com/contributing">contributing guide</a> for more details, prioerities and rules are specified there. If you want to contribute, but don't know what and how - message me on Telegram [@rostislav_dugin](https://t.me/rostislav_dugin)

backend/.env.development.example

@@ -17,6 +17,7 @@ TEST_GOOGLE_DRIVE_CLIENT_ID=
 TEST_GOOGLE_DRIVE_CLIENT_SECRET=
 TEST_GOOGLE_DRIVE_TOKEN_JSON="{\"access_token\":\"ya29..."
 # testing DBs
+TEST_POSTGRES_12_PORT=5000
 TEST_POSTGRES_13_PORT=5001
 TEST_POSTGRES_14_PORT=5002
 TEST_POSTGRES_15_PORT=5003
@@ -30,4 +31,6 @@ TEST_MINIO_CONSOLE_PORT=9001
 TEST_NAS_PORT=7006
 # testing Telegram
 TEST_TELEGRAM_BOT_TOKEN=
-TEST_TELEGRAM_CHAT_ID=
+TEST_TELEGRAM_CHAT_ID=
+# testing Azure Blob Storage
+TEST_AZURITE_BLOB_PORT=10000

backend/docker-compose.yml.example

@@ -31,7 +31,26 @@ services:
     container_name: test-minio
     command: server /data --console-address ":9001"
 
+  # Test Azurite container
+  test-azurite:
+    image: mcr.microsoft.com/azure-storage/azurite
+    ports:
+      - "${TEST_AZURITE_BLOB_PORT:-10000}:10000"
+    container_name: test-azurite
+    command: azurite-blob --blobHost 0.0.0.0
+
   # Test PostgreSQL containers
+  test-postgres-12:
+    image: postgres:12
+    ports:
+      - "${TEST_POSTGRES_12_PORT}:5432"
+    environment:
+      - POSTGRES_DB=testdb
+      - POSTGRES_USER=testuser
+      - POSTGRES_PASSWORD=testpassword
+    container_name: test-postgres-12
+    shm_size: 1gb
+
   test-postgres-13:
     image: postgres:13
     ports:

backend/go.mod

@@ -3,6 +3,8 @@ module postgresus-backend
 go 1.23.3
 
 require (
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3
 	github.com/gin-contrib/cors v1.7.5
 	github.com/gin-contrib/gzip v1.2.3
 	github.com/gin-gonic/gin v1.10.0
@@ -15,16 +17,18 @@ require (
 	github.com/lib/pq v1.10.9
 	github.com/minio/minio-go/v7 v7.0.92
 	github.com/shirou/gopsutil/v4 v4.25.5
-	github.com/stretchr/testify v1.10.0
+	github.com/stretchr/testify v1.11.1
 	github.com/swaggo/files v1.0.1
 	github.com/swaggo/gin-swagger v1.6.0
 	github.com/swaggo/swag v1.16.4
-	golang.org/x/crypto v0.39.0
+	golang.org/x/crypto v0.41.0
 	golang.org/x/time v0.12.0
 	gorm.io/driver/postgres v1.5.11
 	gorm.io/gorm v1.26.1
 )
 
+require github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
+
 require (
 	cloud.google.com/go/auth v0.16.2 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
@@ -99,12 +103,12 @@ require (
 	go.opentelemetry.io/otel/metric v1.36.0 // indirect
 	go.opentelemetry.io/otel/trace v1.36.0 // indirect
 	golang.org/x/arch v0.17.0 // indirect
-	golang.org/x/net v0.41.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/oauth2 v0.30.0
-	golang.org/x/sync v0.15.0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
-	golang.org/x/text v0.26.0 // indirect
-	golang.org/x/tools v0.33.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
+	golang.org/x/tools v0.35.0 // indirect
 	google.golang.org/api v0.239.0
 	google.golang.org/protobuf v1.36.6 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect

backend/go.sum

@@ -6,6 +6,18 @@ cloud.google.com/go/compute/metadata v0.7.0 h1:PBWF+iiAerVNe8UCHxdOt6eHLVc3ydFeO
 cloud.google.com/go/compute/metadata v0.7.0/go.mod h1:j5MvL9PprKL39t166CoB1uVHfQMs4tFQZZcKwksXUjo=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 h1:JXg2dwJUmPB9JmtVmdEB16APJ7jurfbY5jnfXpJoRMc=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0/go.mod h1:YD5h/ldMsG0XiIw7PdyNhLxaM317eFh5yNLccNfGdyw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.0 h1:KpMC6LFL7mqpExyMC9jVOYRiVhLmamjeZfRsUpB7l4s=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.0/go.mod h1:J7MUC/wtRpfGVbQ5sIItY5/FuVWmvzlY21WAOfQnq/I=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1 h1:/Zt+cDPnpC3OVDm/JKLOs7M2DKmLRIIp3XIx9pHHiig=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1/go.mod h1:Ng3urmn6dYe8gnbCMoHHVl5APYz2txho3koEkV2o2HA=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 h1:ZJJNFaQ86GVKQ9ehwqyAFE6pIfyicpuJ8IkVaPBc6/4=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3/go.mod h1:URuDvhmATVKqHBH9/0nOiNKk0+YcwfQ3WkK5PqHKxc8=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0 h1:XkkQbfMyuH2jTSjQjSoihryI8GINRcs4xp8lNawg0FI=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0/go.mod h1:HKpQxkWaGLJ+D/5H8QRpyQXA1eKjxkFlOMwck5+33Jk=
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
 github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
@@ -80,6 +92,8 @@ github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
 github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/golang-jwt/jwt/v4 v4.5.2 h1:YtQM7lnr8iZ+j5q71MGKkNw9Mn7AjHM68uc9g5fXeUI=
 github.com/golang-jwt/jwt/v4 v4.5.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
+github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
 github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
@@ -131,6 +145,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
 github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
@@ -159,6 +175,8 @@ github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0
 github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
 github.com/philhofer/fwd v1.1.3-0.20240916144458-20a13a1f6b7c h1:dAMKvw0MlJT1GshSTtih8C2gDs04w8dReiOGXrGLNoY=
 github.com/philhofer/fwd v1.1.3-0.20240916144458-20a13a1f6b7c/go.mod h1:RqIHx9QI14HlwKwm98g9Re5prTQ6LdeRQn+gXJFxsJM=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 h1:o4JXh1EVt9k/+g42oCprj/FisM4qX9L3sZB3upGN2ZU=
@@ -180,8 +198,8 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/swaggo/files v1.0.1 h1:J1bVJ4XHZNq0I46UU90611i9/YzdrF7x92oX1ig5IdE=
 github.com/swaggo/files v1.0.1/go.mod h1:0qXmMNH6sXNf+73t65aKeB+ApmgxdnkQzVTAj2uaMUg=
 github.com/swaggo/gin-swagger v1.6.0 h1:y8sxvQ3E20/RCyrXeFfg60r6H0Z+SwpTjMYsMm+zy8M=
@@ -216,25 +234,25 @@ golang.org/x/arch v0.17.0/go.mod h1:bdwinDaKcfZUGpH09BB7ZmOfhalA8lQdzl62l8gGWsk=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
-golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
-golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
+golang.org/x/mod v0.26.0 h1:EGMPT//Ezu+ylkCijjPc+f4Aih7sZvaAr+O3EHBxvZg=
+golang.org/x/mod v0.26.0/go.mod h1:/j6NAhSk8iQ723BGAUyoAcn7SlD7s15Dp9Nd/SfeaFQ=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210421230115-4e50805a0758/go.mod h1:72T/g9IO56b78aLF+1Kcs5dz7/ng1VjMUvfKvpfy+jM=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
-golang.org/x/net v0.41.0/go.mod h1:B/K4NNqkfmg07DQYrbwvSluqCJOOXwUjeb/5lOisjbA=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/oauth2 v0.30.0 h1:dnDm7JmhM45NNpd8FDDeLhK6FwqbOf4MLCM9zb1BOHI=
 golang.org/x/oauth2 v0.30.0/go.mod h1:B++QgG3ZKulg6sRPGD/mqlHQs5rB3Ml9erfeDY7xKlU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.15.0 h1:KWH3jNZsfyT6xfAfKiz6MRNmd46ByHDYaZ7KSkCtdW8=
-golang.org/x/sync v0.15.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
+golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
+golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -247,8 +265,8 @@ golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
-golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
@@ -257,15 +275,15 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.26.0 h1:P42AVeLghgTYr4+xUnTRKDMqpar+PtX7KWuNQL21L8M=
-golang.org/x/text v0.26.0/go.mod h1:QK15LZJUUQVJxhz7wXgxSy/CJaTFjd0G+YLonydOVQA=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
 golang.org/x/time v0.12.0 h1:ScB/8o8olJvc+CQPWrK3fPZNfh7qgwCrY0zJmoEQLSE=
 golang.org/x/time v0.12.0/go.mod h1:CDIdPxbZBQxdj6cxyCIdrNogrJKMJ7pr37NYpMcMDSg=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.33.0 h1:4qz2S3zmRxbGIhDIAgjxvFutSvH5EfnsYrRBj0UI0bc=
-golang.org/x/tools v0.33.0/go.mod h1:CIJMaWEY88juyUfo7UbgPqbC8rU2OqfAV1h2Qp0oMYI=
+golang.org/x/tools v0.35.0 h1:mBffYraMEf7aa0sB+NuKnuCy8qI/9Bughn8dC2Gu5r0=
+golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.239.0 h1:2hZKUnFZEy81eugPs4e2XzIJ5SOwQg0G82bpXD65Puo=
 google.golang.org/api v0.239.0/go.mod h1:cOVEm2TpdAGHL2z+UwyS+kmlGr3bVWQQ6sYEqkKje50=

backend/internal/config/config.go

@@ -33,6 +33,7 @@ type EnvVariables struct {
 	TestGoogleDriveClientSecret string `env:"TEST_GOOGLE_DRIVE_CLIENT_SECRET"`
 	TestGoogleDriveTokenJSON    string `env:"TEST_GOOGLE_DRIVE_TOKEN_JSON"`
 
+	TestPostgres12Port string `env:"TEST_POSTGRES_12_PORT"`
 	TestPostgres13Port string `env:"TEST_POSTGRES_13_PORT"`
 	TestPostgres14Port string `env:"TEST_POSTGRES_14_PORT"`
 	TestPostgres15Port string `env:"TEST_POSTGRES_15_PORT"`
@@ -43,6 +44,8 @@ type EnvVariables struct {
 	TestMinioPort        string `env:"TEST_MINIO_PORT"`
 	TestMinioConsolePort string `env:"TEST_MINIO_CONSOLE_PORT"`
 
+	TestAzuriteBlobPort string `env:"TEST_AZURITE_BLOB_PORT"`
+
 	TestNASPort string `env:"TEST_NAS_PORT"`
 
 	// oauth
@@ -145,6 +148,10 @@ func loadEnvVariables() {
 	env.TempFolder = filepath.Join(filepath.Dir(backendRoot), "postgresus-data", "temp")
 
 	if env.IsTesting {
+		if env.TestPostgres12Port == "" {
+			log.Error("TEST_POSTGRES_12_PORT is empty")
+			os.Exit(1)
+		}
 		if env.TestPostgres13Port == "" {
 			log.Error("TEST_POSTGRES_13_PORT is empty")
 			os.Exit(1)
@@ -179,6 +186,11 @@ func loadEnvVariables() {
 			os.Exit(1)
 		}
 
+		if env.TestAzuriteBlobPort == "" {
+			log.Error("TEST_AZURITE_BLOB_PORT is empty")
+			os.Exit(1)
+		}
+
 		if env.TestNASPort == "" {
 			log.Error("TEST_NAS_PORT is empty")
 			os.Exit(1)

backend/internal/features/backups/backups/background_service.go

@@ -5,6 +5,7 @@ import (
 	"postgresus-backend/internal/config"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/storages"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/period"
 	"time"
 )
@@ -131,7 +132,8 @@ func (s *BackupBackgroundService) cleanOldBackups() error {
 				continue
 			}
 
-			err = storage.DeleteFile(backup.ID)
+			encryptor := encryption.GetFieldEncryptor()
+			err = storage.DeleteFile(encryptor, backup.ID)
 			if err != nil {
 				s.logger.Error("Failed to delete backup file", "backupId", backup.ID, "error", err)
 			}

backend/internal/features/backups/backups/background_service_test.go

@@ -44,11 +44,8 @@ func Test_MakeBackupForDbHavingBackupDayAgo_BackupCreated(t *testing.T) {
 
 	// add old backup
 	backupRepository.Save(&Backup{
-		Database:   database,
 		DatabaseID: database.ID,
-
-		Storage:   storage,
-		StorageID: storage.ID,
+		StorageID:  storage.ID,
 
 		Status: BackupStatusCompleted,
 
@@ -105,11 +102,8 @@ func Test_MakeBackupForDbHavingHourAgoBackup_BackupSkipped(t *testing.T) {
 
 	// add recent backup (1 hour ago)
 	backupRepository.Save(&Backup{
-		Database:   database,
 		DatabaseID: database.ID,
-
-		Storage:   storage,
-		StorageID: storage.ID,
+		StorageID:  storage.ID,
 
 		Status: BackupStatusCompleted,
 
@@ -169,11 +163,8 @@ func Test_MakeBackupHavingFailedBackupWithoutRetries_BackupSkipped(t *testing.T)
 	// add failed backup
 	failMessage := "backup failed"
 	backupRepository.Save(&Backup{
-		Database:   database,
 		DatabaseID: database.ID,
-
-		Storage:   storage,
-		StorageID: storage.ID,
+		StorageID:  storage.ID,
 
 		Status:      BackupStatusFailed,
 		FailMessage: &failMessage,
@@ -234,11 +225,8 @@ func Test_MakeBackupHavingFailedBackupWithRetries_BackupCreated(t *testing.T) {
 	// add failed backup
 	failMessage := "backup failed"
 	backupRepository.Save(&Backup{
-		Database:   database,
 		DatabaseID: database.ID,
-
-		Storage:   storage,
-		StorageID: storage.ID,
+		StorageID:  storage.ID,
 
 		Status:      BackupStatusFailed,
 		FailMessage: &failMessage,
@@ -262,7 +250,7 @@ func Test_MakeBackupHavingFailedBackupWithRetries_BackupCreated(t *testing.T) {
 	}
 
 	databases.RemoveTestDatabase(database)
-	time.Sleep(50 * time.Millisecond) // Wait for cascading deletes
+	time.Sleep(100 * time.Millisecond) // Wait for cascading deletes
 	notifiers.RemoveTestNotifier(notifier)
 	storages.RemoveTestStorage(storage.ID)
 	workspaces_testing.RemoveTestWorkspace(workspace, router)
@@ -300,11 +288,8 @@ func Test_MakeBackupHavingFailedBackupWithRetries_RetriesCountNotExceeded(t *tes
 
 	for i := 0; i < 3; i++ {
 		backupRepository.Save(&Backup{
-			Database:   database,
 			DatabaseID: database.ID,
-
-			Storage:   storage,
-			StorageID: storage.ID,
+			StorageID:  storage.ID,
 
 			Status:      BackupStatusFailed,
 			FailMessage: &failMessage,

backend/internal/features/backups/backups/controller_test.go

@@ -26,6 +26,7 @@ import (
 	users_testing "postgresus-backend/internal/features/users/testing"
 	workspaces_models "postgresus-backend/internal/features/workspaces/models"
 	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	"postgresus-backend/internal/util/encryption"
 	test_utils "postgresus-backend/internal/util/testing"
 	"postgresus-backend/internal/util/tools"
 )
@@ -512,9 +513,7 @@ func Test_CancelBackup_InProgressBackup_SuccessfullyCancelled(t *testing.T) {
 	backup := &Backup{
 		ID:               uuid.New(),
 		DatabaseID:       database.ID,
-		Database:         database,
 		StorageID:        storage.ID,
-		Storage:          storage,
 		Status:           BackupStatusInProgress,
 		BackupSizeMb:     0,
 		BackupDurationMs: 0,
@@ -526,7 +525,7 @@ func Test_CancelBackup_InProgressBackup_SuccessfullyCancelled(t *testing.T) {
 	assert.NoError(t, err)
 
 	// Register a cancellable context for the backup
-	GetBackupService().backupContextMgr.RegisterBackup(backup.ID, func() {})
+	GetBackupService().backupContextManager.RegisterBackup(backup.ID, func() {})
 
 	resp := test_utils.MakePostRequest(
 		t,
@@ -686,9 +685,7 @@ func createTestBackup(
 	backup := &Backup{
 		ID:               uuid.New(),
 		DatabaseID:       database.ID,
-		Database:         database,
 		StorageID:        storages[0].ID,
-		Storage:          storages[0],
 		Status:           BackupStatusCompleted,
 		BackupSizeMb:     10.5,
 		BackupDurationMs: 1000,
@@ -704,7 +701,7 @@ func createTestBackup(
 	dummyContent := []byte("dummy backup content for testing")
 	reader := strings.NewReader(string(dummyContent))
 	logger := slog.New(slog.NewTextHandler(io.Discard, nil))
-	if err := storages[0].SaveFile(logger, backup.ID, reader); err != nil {
+	if err := storages[0].SaveFile(encryption.GetFieldEncryptor(), logger, backup.ID, reader); err != nil {
 		panic(fmt.Sprintf("Failed to create test backup file: %v", err))
 	}
 

backend/internal/features/backups/backups/di.go

@@ -7,7 +7,9 @@ import (
 	"postgresus-backend/internal/features/databases"
 	"postgresus-backend/internal/features/notifiers"
 	"postgresus-backend/internal/features/storages"
+	users_repositories "postgresus-backend/internal/features/users/repositories"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 	"time"
 )
@@ -23,6 +25,8 @@ var backupService = &BackupService{
 	notifiers.GetNotifierService(),
 	notifiers.GetNotifierService(),
 	backups_config.GetBackupConfigService(),
+	users_repositories.GetSecretKeyRepository(),
+	encryption.GetFieldEncryptor(),
 	usecases.GetCreateBackupUsecase(),
 	logger.GetLogger(),
 	[]BackupRemoveListener{},

backend/internal/features/backups/backups/dto.go

@@ -1,5 +1,10 @@
 package backups
 
+import (
+	"io"
+	"postgresus-backend/internal/features/backups/backups/encryption"
+)
+
 type GetBackupsRequest struct {
 	DatabaseID string `form:"database_id" binding:"required"`
 	Limit      int    `form:"limit"`
@@ -12,3 +17,12 @@ type GetBackupsResponse struct {
 	Limit   int       `json:"limit"`
 	Offset  int       `json:"offset"`
 }
+
+type decryptionReaderCloser struct {
+	*encryption.DecryptionReader
+	baseReader io.ReadCloser
+}
+
+func (r *decryptionReaderCloser) Close() error {
+	return r.baseReader.Close()
+}

backend/internal/features/backups/backups/encryption/decrypting_reader.go

@@ -0,0 +1,156 @@
+package encryption
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/binary"
+	"fmt"
+	"io"
+
+	"github.com/google/uuid"
+)
+
+type DecryptionReader struct {
+	baseReader io.Reader
+	cipher     cipher.AEAD
+	buffer     []byte
+	nonce      []byte
+	chunkIndex uint64
+	headerRead bool
+	eof        bool
+}
+
+func NewDecryptionReader(
+	baseReader io.Reader,
+	masterKey string,
+	backupID uuid.UUID,
+	salt []byte,
+	nonce []byte,
+) (*DecryptionReader, error) {
+	if len(salt) != SaltLen {
+		return nil, fmt.Errorf("salt must be %d bytes, got %d", SaltLen, len(salt))
+	}
+	if len(nonce) != NonceLen {
+		return nil, fmt.Errorf("nonce must be %d bytes, got %d", NonceLen, len(nonce))
+	}
+
+	derivedKey, err := DeriveBackupKey(masterKey, backupID, salt)
+	if err != nil {
+		return nil, fmt.Errorf("failed to derive backup key: %w", err)
+	}
+
+	block, err := aes.NewCipher(derivedKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	aesgcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	reader := &DecryptionReader{
+		baseReader,
+		aesgcm,
+		make([]byte, 0),
+		nonce,
+		0,
+		false,
+		false,
+	}
+
+	if err := reader.readAndValidateHeader(salt, nonce); err != nil {
+		return nil, err
+	}
+
+	return reader, nil
+}
+
+func (r *DecryptionReader) Read(p []byte) (n int, err error) {
+	for len(r.buffer) < len(p) && !r.eof {
+		if err := r.readAndDecryptChunk(); err != nil {
+			if err == io.EOF {
+				r.eof = true
+				break
+			}
+			return 0, err
+		}
+	}
+
+	if len(r.buffer) == 0 {
+		return 0, io.EOF
+	}
+
+	n = copy(p, r.buffer)
+	r.buffer = r.buffer[n:]
+
+	return n, nil
+}
+
+func (r *DecryptionReader) readAndValidateHeader(expectedSalt, expectedNonce []byte) error {
+	header := make([]byte, HeaderLen)
+
+	if _, err := io.ReadFull(r.baseReader, header); err != nil {
+		return fmt.Errorf("failed to read header: %w", err)
+	}
+
+	magic := string(header[0:MagicBytesLen])
+	if magic != MagicBytes {
+		return fmt.Errorf("invalid magic bytes: expected %s, got %s", MagicBytes, magic)
+	}
+
+	salt := header[MagicBytesLen : MagicBytesLen+SaltLen]
+	nonce := header[MagicBytesLen+SaltLen : MagicBytesLen+SaltLen+NonceLen]
+
+	if string(salt) != string(expectedSalt) {
+		return fmt.Errorf("salt mismatch in file header")
+	}
+
+	if string(nonce) != string(expectedNonce) {
+		return fmt.Errorf("nonce mismatch in file header")
+	}
+
+	r.headerRead = true
+	return nil
+}
+
+func (r *DecryptionReader) readAndDecryptChunk() error {
+	lengthBuf := make([]byte, 4)
+	if _, err := io.ReadFull(r.baseReader, lengthBuf); err != nil {
+		return err
+	}
+
+	chunkLen := binary.BigEndian.Uint32(lengthBuf)
+	if chunkLen == 0 || chunkLen > ChunkSize+16 {
+		return fmt.Errorf("invalid chunk length: %d", chunkLen)
+	}
+
+	encrypted := make([]byte, chunkLen)
+	if _, err := io.ReadFull(r.baseReader, encrypted); err != nil {
+		return fmt.Errorf("failed to read encrypted chunk: %w", err)
+	}
+
+	chunkNonce := r.generateChunkNonce()
+
+	decrypted, err := r.cipher.Open(nil, chunkNonce, encrypted, nil)
+	if err != nil {
+		return fmt.Errorf(
+			"failed to decrypt chunk (authentication failed - file may be corrupted or tampered): %w",
+			err,
+		)
+	}
+
+	r.buffer = append(r.buffer, decrypted...)
+	r.chunkIndex++
+
+	return nil
+}
+
+func (r *DecryptionReader) generateChunkNonce() []byte {
+	chunkNonce := make([]byte, NonceLen)
+	copy(chunkNonce, r.nonce)
+
+	binary.BigEndian.PutUint64(chunkNonce[4:], r.chunkIndex)
+
+	return chunkNonce
+}

backend/internal/features/backups/backups/encryption/encrypting_writer.go

@@ -0,0 +1,147 @@
+package encryption
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/binary"
+	"fmt"
+	"io"
+
+	"github.com/google/uuid"
+)
+
+type EncryptionWriter struct {
+	baseWriter    io.Writer
+	cipher        cipher.AEAD
+	buffer        []byte
+	nonce         []byte
+	salt          []byte
+	chunkIndex    uint64
+	headerWritten bool
+}
+
+func NewEncryptionWriter(
+	baseWriter io.Writer,
+	masterKey string,
+	backupID uuid.UUID,
+	salt []byte,
+	nonce []byte,
+) (*EncryptionWriter, error) {
+	if len(salt) != SaltLen {
+		return nil, fmt.Errorf("salt must be %d bytes, got %d", SaltLen, len(salt))
+	}
+	if len(nonce) != NonceLen {
+		return nil, fmt.Errorf("nonce must be %d bytes, got %d", NonceLen, len(nonce))
+	}
+
+	derivedKey, err := DeriveBackupKey(masterKey, backupID, salt)
+	if err != nil {
+		return nil, fmt.Errorf("failed to derive backup key: %w", err)
+	}
+
+	block, err := aes.NewCipher(derivedKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	aesgcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	writer := &EncryptionWriter{
+		baseWriter:    baseWriter,
+		cipher:        aesgcm,
+		buffer:        make([]byte, 0, ChunkSize),
+		nonce:         nonce,
+		chunkIndex:    0,
+		headerWritten: false,
+		salt:          salt, // Store salt for lazy header writing
+	}
+
+	return writer, nil
+}
+
+func (w *EncryptionWriter) Write(p []byte) (n int, err error) {
+	// Write header on first write (lazy initialization)
+	if !w.headerWritten {
+		if err := w.writeHeader(w.salt, w.nonce); err != nil {
+			return 0, fmt.Errorf("failed to write header: %w", err)
+		}
+	}
+
+	n = len(p)
+	w.buffer = append(w.buffer, p...)
+
+	for len(w.buffer) >= ChunkSize {
+		chunk := w.buffer[:ChunkSize]
+		if err := w.encryptAndWriteChunk(chunk); err != nil {
+			return 0, err
+		}
+		w.buffer = w.buffer[ChunkSize:]
+	}
+
+	return n, nil
+}
+
+func (w *EncryptionWriter) Close() error {
+	// Write header if it hasn't been written yet (in case Close is called without any writes)
+	if !w.headerWritten {
+		if err := w.writeHeader(w.salt, w.nonce); err != nil {
+			return fmt.Errorf("failed to write header: %w", err)
+		}
+	}
+
+	if len(w.buffer) > 0 {
+		if err := w.encryptAndWriteChunk(w.buffer); err != nil {
+			return err
+		}
+		w.buffer = nil
+	}
+	return nil
+}
+
+func (w *EncryptionWriter) writeHeader(salt, nonce []byte) error {
+	header := make([]byte, HeaderLen)
+
+	copy(header[0:MagicBytesLen], []byte(MagicBytes))
+	copy(header[MagicBytesLen:MagicBytesLen+SaltLen], salt)
+	copy(header[MagicBytesLen+SaltLen:MagicBytesLen+SaltLen+NonceLen], nonce)
+
+	_, err := w.baseWriter.Write(header)
+	if err != nil {
+		return fmt.Errorf("failed to write header: %w", err)
+	}
+
+	w.headerWritten = true
+	return nil
+}
+
+func (w *EncryptionWriter) encryptAndWriteChunk(chunk []byte) error {
+	chunkNonce := w.generateChunkNonce()
+
+	encrypted := w.cipher.Seal(nil, chunkNonce, chunk, nil)
+
+	lengthBuf := make([]byte, 4)
+	binary.BigEndian.PutUint32(lengthBuf, uint32(len(encrypted)))
+
+	if _, err := w.baseWriter.Write(lengthBuf); err != nil {
+		return fmt.Errorf("failed to write chunk length: %w", err)
+	}
+
+	if _, err := w.baseWriter.Write(encrypted); err != nil {
+		return fmt.Errorf("failed to write encrypted chunk: %w", err)
+	}
+
+	w.chunkIndex++
+	return nil
+}
+
+func (w *EncryptionWriter) generateChunkNonce() []byte {
+	chunkNonce := make([]byte, NonceLen)
+	copy(chunkNonce, w.nonce)
+
+	binary.BigEndian.PutUint64(chunkNonce[4:], w.chunkIndex)
+
+	return chunkNonce
+}

backend/internal/features/backups/backups/encryption/encryption_test.go

@@ -0,0 +1,387 @@
+package encryption
+
+import (
+	"bytes"
+	"crypto/rand"
+	"io"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_EncryptDecryptRoundTrip_ReturnsOriginalData(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	originalData := []byte(
+		"This is a test backup data that should be encrypted and then decrypted successfully.",
+	)
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	n, err := writer.Write(originalData)
+	require.NoError(t, err)
+	assert.Equal(t, len(originalData), n)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted := make([]byte, len(originalData))
+	n, err = io.ReadFull(reader, decrypted)
+	require.NoError(t, err)
+	assert.Equal(t, len(originalData), n)
+	assert.Equal(t, originalData, decrypted)
+}
+
+func Test_EncryptDecryptRoundTrip_LargeData_WorksCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	originalData := make([]byte, 100*1024)
+	_, err = rand.Read(originalData)
+	require.NoError(t, err)
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	n, err := writer.Write(originalData)
+	require.NoError(t, err)
+	assert.Equal(t, len(originalData), n)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted, err := io.ReadAll(reader)
+	require.NoError(t, err)
+	assert.Equal(t, originalData, decrypted)
+}
+
+func Test_EncryptionWriter_MultipleWrites_CombinesCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	part1 := []byte("First part of data. ")
+	part2 := []byte("Second part of data. ")
+	part3 := []byte("Third part of data.")
+	expectedData := append(append(part1, part2...), part3...)
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(part1)
+	require.NoError(t, err)
+	_, err = writer.Write(part2)
+	require.NoError(t, err)
+	_, err = writer.Write(part3)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted, err := io.ReadAll(reader)
+	require.NoError(t, err)
+	assert.Equal(t, expectedData, decrypted)
+}
+
+func Test_DecryptionReader_InvalidHeader_ReturnsError(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	invalidHeader := make([]byte, HeaderLen)
+	copy(invalidHeader, []byte("INVALID!"))
+
+	invalidData := bytes.NewBuffer(invalidHeader)
+
+	_, err = NewDecryptionReader(invalidData, masterKey, backupID, salt, nonce)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "invalid magic bytes")
+}
+
+func Test_DecryptionReader_TamperedData_ReturnsError(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	originalData := []byte("This data will be tampered with.")
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(originalData)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	encryptedBytes := encrypted.Bytes()
+	if len(encryptedBytes) > HeaderLen+10 {
+		encryptedBytes[HeaderLen+10] ^= 0xFF
+	}
+
+	tamperedBuffer := bytes.NewBuffer(encryptedBytes)
+
+	reader, err := NewDecryptionReader(tamperedBuffer, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = io.ReadAll(reader)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "authentication failed")
+}
+
+func Test_DeriveBackupKey_SameInputs_ReturnsSameKey(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+
+	key1, err := DeriveBackupKey(masterKey, backupID, salt)
+	require.NoError(t, err)
+
+	key2, err := DeriveBackupKey(masterKey, backupID, salt)
+	require.NoError(t, err)
+
+	assert.Equal(t, key1, key2)
+}
+
+func Test_DeriveBackupKey_DifferentInputs_ReturnsDifferentKeys(t *testing.T) {
+	masterKey1 := uuid.New().String() + uuid.New().String()
+	masterKey2 := uuid.New().String() + uuid.New().String()
+	backupID1 := uuid.New()
+	backupID2 := uuid.New()
+	salt1, err := GenerateSalt()
+	require.NoError(t, err)
+	salt2, err := GenerateSalt()
+	require.NoError(t, err)
+
+	key1, err := DeriveBackupKey(masterKey1, backupID1, salt1)
+	require.NoError(t, err)
+
+	key2, err := DeriveBackupKey(masterKey2, backupID1, salt1)
+	require.NoError(t, err)
+	assert.NotEqual(t, key1, key2)
+
+	key3, err := DeriveBackupKey(masterKey1, backupID2, salt1)
+	require.NoError(t, err)
+	assert.NotEqual(t, key1, key3)
+
+	key4, err := DeriveBackupKey(masterKey1, backupID1, salt2)
+	require.NoError(t, err)
+	assert.NotEqual(t, key1, key4)
+}
+
+func Test_EncryptionWriter_PartialChunk_HandledCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	smallData := []byte("Small data less than chunk size")
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(smallData)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted, err := io.ReadAll(reader)
+	require.NoError(t, err)
+	assert.Equal(t, smallData, decrypted)
+}
+
+func Test_GenerateSalt_ReturnsCorrectLength(t *testing.T) {
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	assert.Equal(t, SaltLen, len(salt))
+}
+
+func Test_GenerateSalt_GeneratesUniqueSalts(t *testing.T) {
+	salt1, err := GenerateSalt()
+	require.NoError(t, err)
+
+	salt2, err := GenerateSalt()
+	require.NoError(t, err)
+
+	assert.NotEqual(t, salt1, salt2)
+}
+
+func Test_GenerateNonce_ReturnsCorrectLength(t *testing.T) {
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+	assert.Equal(t, NonceLen, len(nonce))
+}
+
+func Test_GenerateNonce_GeneratesUniqueNonces(t *testing.T) {
+	nonce1, err := GenerateNonce()
+	require.NoError(t, err)
+
+	nonce2, err := GenerateNonce()
+	require.NoError(t, err)
+
+	assert.NotEqual(t, nonce1, nonce2)
+}
+
+func Test_DecryptionReader_WrongMasterKey_ReturnsError(t *testing.T) {
+	masterKey1 := uuid.New().String() + uuid.New().String()
+	masterKey2 := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	originalData := []byte("Secret data")
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey1, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(originalData)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey2, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = io.ReadAll(reader)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "authentication failed")
+}
+
+func Test_EncryptionWriter_EmptyData_WorksCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted, err := io.ReadAll(reader)
+	require.NoError(t, err)
+	assert.Equal(t, 0, len(decrypted))
+}
+
+func Test_EncryptionWriter_MultipleChunks_WorksCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	dataSize := ChunkSize*3 + 1000
+	originalData := make([]byte, dataSize)
+	_, err = rand.Read(originalData)
+	require.NoError(t, err)
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(originalData)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	decrypted, err := io.ReadAll(reader)
+	require.NoError(t, err)
+	assert.Equal(t, originalData, decrypted)
+}
+
+func Test_DecryptionReader_SmallReads_WorksCorrectly(t *testing.T) {
+	masterKey := uuid.New().String() + uuid.New().String()
+	backupID := uuid.New()
+	salt, err := GenerateSalt()
+	require.NoError(t, err)
+	nonce, err := GenerateNonce()
+	require.NoError(t, err)
+
+	originalData := []byte("This is test data that will be read in small chunks.")
+
+	var encrypted bytes.Buffer
+	writer, err := NewEncryptionWriter(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	_, err = writer.Write(originalData)
+	require.NoError(t, err)
+
+	err = writer.Close()
+	require.NoError(t, err)
+
+	reader, err := NewDecryptionReader(&encrypted, masterKey, backupID, salt, nonce)
+	require.NoError(t, err)
+
+	var decrypted []byte
+	buf := make([]byte, 5)
+	for {
+		n, err := reader.Read(buf)
+		if n > 0 {
+			decrypted = append(decrypted, buf[:n]...)
+		}
+		if err == io.EOF {
+			break
+		}
+		require.NoError(t, err)
+	}
+
+	assert.Equal(t, originalData, decrypted)
+}

backend/internal/features/backups/backups/encryption/utils.go

@@ -0,0 +1,52 @@
+package encryption
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"fmt"
+
+	"github.com/google/uuid"
+	"golang.org/x/crypto/pbkdf2"
+)
+
+const (
+	MagicBytes       = "PGRSUS01"
+	MagicBytesLen    = 8
+	SaltLen          = 32
+	NonceLen         = 12
+	ReservedLen      = 12
+	HeaderLen        = MagicBytesLen + SaltLen + NonceLen + ReservedLen
+	ChunkSize        = 32 * 1024
+	PBKDF2Iterations = 100000
+)
+
+func DeriveBackupKey(masterKey string, backupID uuid.UUID, salt []byte) ([]byte, error) {
+	if masterKey == "" {
+		return nil, fmt.Errorf("master key cannot be empty")
+	}
+	if len(salt) != SaltLen {
+		return nil, fmt.Errorf("salt must be %d bytes", SaltLen)
+	}
+
+	keyMaterial := []byte(masterKey + backupID.String())
+
+	derivedKey := pbkdf2.Key(keyMaterial, salt, PBKDF2Iterations, 32, sha256.New)
+
+	return derivedKey, nil
+}
+
+func GenerateSalt() ([]byte, error) {
+	salt := make([]byte, SaltLen)
+	if _, err := rand.Read(salt); err != nil {
+		return nil, fmt.Errorf("failed to generate salt: %w", err)
+	}
+	return salt, nil
+}
+
+func GenerateNonce() ([]byte, error) {
+	nonce := make([]byte, NonceLen)
+	if _, err := rand.Read(nonce); err != nil {
+		return nil, fmt.Errorf("failed to generate nonce: %w", err)
+	}
+	return nonce, nil
+}

backend/internal/features/backups/backups/interfaces.go

@@ -3,6 +3,7 @@ package backups
 import (
 	"context"
 
+	usecases_postgresql "postgresus-backend/internal/features/backups/backups/usecases/postgresql"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/databases"
 	"postgresus-backend/internal/features/notifiers"
@@ -29,7 +30,7 @@ type CreateBackupUsecase interface {
 		backupProgressListener func(
 			completedMBs float64,
 		),
-	) error
+	) (*usecases_postgresql.BackupMetadata, error)
 }
 
 type BackupRemoveListener interface {

backend/internal/features/backups/backups/model.go

@@ -1,8 +1,7 @@
 package backups
 
 import (
-	"postgresus-backend/internal/features/databases"
-	"postgresus-backend/internal/features/storages"
+	backups_config "postgresus-backend/internal/features/backups/config"
 	"time"
 
 	"github.com/google/uuid"
@@ -11,11 +10,8 @@ import (
 type Backup struct {
 	ID uuid.UUID `json:"id" gorm:"column:id;type:uuid;primaryKey"`
 
-	Database   *databases.Database `json:"database"   gorm:"foreignKey:DatabaseID"`
-	DatabaseID uuid.UUID           `json:"databaseId" gorm:"column:database_id;type:uuid;not null"`
-
-	Storage   *storages.Storage `json:"storage"   gorm:"foreignKey:StorageID"`
-	StorageID uuid.UUID         `json:"storageId" gorm:"column:storage_id;type:uuid;not null"`
+	DatabaseID uuid.UUID `json:"databaseId" gorm:"column:database_id;type:uuid;not null"`
+	StorageID  uuid.UUID `json:"storageId"  gorm:"column:storage_id;type:uuid;not null"`
 
 	Status      BackupStatus `json:"status"      gorm:"column:status;not null"`
 	FailMessage *string      `json:"failMessage" gorm:"column:fail_message"`
@@ -24,5 +20,9 @@ type Backup struct {
 
 	BackupDurationMs int64 `json:"backupDurationMs" gorm:"column:backup_duration_ms;default:0"`
 
+	EncryptionSalt *string                         `json:"-"          gorm:"column:encryption_salt"`
+	EncryptionIV   *string                         `json:"-"          gorm:"column:encryption_iv"`
+	Encryption     backups_config.BackupEncryption `json:"encryption" gorm:"column:encryption;type:text;not null;default:'NONE'"`
+
 	CreatedAt time.Time `json:"createdAt" gorm:"column:created_at"`
 }

backend/internal/features/backups/backups/repository.go

@@ -13,18 +13,20 @@ import (
 type BackupRepository struct{}
 
 func (r *BackupRepository) Save(backup *Backup) error {
+	if backup.DatabaseID == uuid.Nil || backup.StorageID == uuid.Nil {
+		return errors.New("database ID and storage ID are required")
+	}
+
 	db := storage.GetDb()
 
 	isNew := backup.ID == uuid.Nil
 	if isNew {
 		backup.ID = uuid.New()
 		return db.Create(backup).
-			Omit("Database", "Storage").
 			Error
 	}
 
 	return db.Save(backup).
-		Omit("Database", "Storage").
 		Error
 }
 
@@ -33,8 +35,6 @@ func (r *BackupRepository) FindByDatabaseID(databaseID uuid.UUID) ([]*Backup, er
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ?", databaseID).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -56,8 +56,6 @@ func (r *BackupRepository) FindByDatabaseIDWithLimit(
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ?", databaseID).
 		Order("created_at DESC").
 		Limit(limit).
@@ -73,8 +71,6 @@ func (r *BackupRepository) FindByStorageID(storageID uuid.UUID) ([]*Backup, erro
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("storage_id = ?", storageID).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -89,8 +85,6 @@ func (r *BackupRepository) FindLastByDatabaseID(databaseID uuid.UUID) (*Backup,
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ?", databaseID).
 		Order("created_at DESC").
 		First(&backup).Error; err != nil {
@@ -109,8 +103,6 @@ func (r *BackupRepository) FindByID(id uuid.UUID) (*Backup, error) {
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("id = ?", id).
 		First(&backup).Error; err != nil {
 		return nil, err
@@ -124,8 +116,6 @@ func (r *BackupRepository) FindByStatus(status BackupStatus) ([]*Backup, error)
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("status = ?", status).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -143,8 +133,6 @@ func (r *BackupRepository) FindByStorageIdAndStatus(
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("storage_id = ? AND status = ?", storageID, status).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -162,8 +150,6 @@ func (r *BackupRepository) FindByDatabaseIdAndStatus(
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ? AND status = ?", databaseID, status).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -185,8 +171,6 @@ func (r *BackupRepository) FindBackupsBeforeDate(
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ? AND created_at < ?", databaseID, date).
 		Order("created_at DESC").
 		Find(&backups).Error; err != nil {
@@ -204,8 +188,6 @@ func (r *BackupRepository) FindByDatabaseIDWithPagination(
 
 	if err := storage.
 		GetDb().
-		Preload("Database").
-		Preload("Storage").
 		Where("database_id = ?", databaseID).
 		Order("created_at DESC").
 		Limit(limit).

backend/internal/features/backups/backups/service.go

@@ -2,17 +2,21 @@ package backups
 
 import (
 	"context"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"io"
 	"log/slog"
 	audit_logs "postgresus-backend/internal/features/audit_logs"
+	"postgresus-backend/internal/features/backups/backups/encryption"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/databases"
 	"postgresus-backend/internal/features/notifiers"
 	"postgresus-backend/internal/features/storages"
 	users_models "postgresus-backend/internal/features/users/models"
+	users_repositories "postgresus-backend/internal/features/users/repositories"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	util_encryption "postgresus-backend/internal/util/encryption"
 	"slices"
 	"strings"
 	"time"
@@ -27,6 +31,8 @@ type BackupService struct {
 	notifierService     *notifiers.NotifierService
 	notificationSender  NotificationSender
 	backupConfigService *backups_config.BackupConfigService
+	secretKeyRepo       *users_repositories.SecretKeyRepository
+	fieldEncryptor      util_encryption.FieldEncryptor
 
 	createBackupUseCase CreateBackupUsecase
 
@@ -34,9 +40,9 @@ type BackupService struct {
 
 	backupRemoveListeners []BackupRemoveListener
 
-	workspaceService *workspaces_services.WorkspaceService
-	auditLogService  *audit_logs.AuditLogService
-	backupContextMgr *BackupContextManager
+	workspaceService     *workspaces_services.WorkspaceService
+	auditLogService      *audit_logs.AuditLogService
+	backupContextManager *BackupContextManager
 }
 
 func (s *BackupService) AddBackupRemoveListener(listener BackupRemoveListener) {
@@ -149,11 +155,16 @@ func (s *BackupService) DeleteBackup(
 		return err
 	}
 
-	if backup.Database.WorkspaceID == nil {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return err
+	}
+
+	if database.WorkspaceID == nil {
 		return errors.New("cannot delete backup for database without workspace")
 	}
 
-	canManage, err := s.workspaceService.CanUserManageDBs(*backup.Database.WorkspaceID, user)
+	canManage, err := s.workspaceService.CanUserManageDBs(*database.WorkspaceID, user)
 	if err != nil {
 		return err
 	}
@@ -168,11 +179,11 @@ func (s *BackupService) DeleteBackup(
 	s.auditLogService.WriteAuditLog(
 		fmt.Sprintf(
 			"Backup deleted for database: %s (ID: %s)",
-			backup.Database.Name,
+			database.Name,
 			backupID.String(),
 		),
 		&user.ID,
-		backup.Database.WorkspaceID,
+		database.WorkspaceID,
 	)
 
 	return s.deleteBackup(backup)
@@ -220,10 +231,7 @@ func (s *BackupService) MakeBackup(databaseID uuid.UUID, isLastTry bool) {
 
 	backup := &Backup{
 		DatabaseID: databaseID,
-		Database:   database,
-
-		StorageID: storage.ID,
-		Storage:   storage,
+		StorageID:  storage.ID,
 
 		Status: BackupStatusInProgress,
 
@@ -251,10 +259,10 @@ func (s *BackupService) MakeBackup(databaseID uuid.UUID, isLastTry bool) {
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())
-	s.backupContextMgr.RegisterBackup(backup.ID, cancel)
-	defer s.backupContextMgr.UnregisterBackup(backup.ID)
+	s.backupContextManager.RegisterBackup(backup.ID, cancel)
+	defer s.backupContextManager.UnregisterBackup(backup.ID)
 
-	err = s.createBackupUseCase.Execute(
+	backupMetadata, err := s.createBackupUseCase.Execute(
 		ctx,
 		backup.ID,
 		backupConfig,
@@ -278,7 +286,7 @@ func (s *BackupService) MakeBackup(databaseID uuid.UUID, isLastTry bool) {
 			// Delete partial backup from storage
 			storage, storageErr := s.storageService.GetStorageByID(backup.StorageID)
 			if storageErr == nil {
-				if deleteErr := storage.DeleteFile(backup.ID); deleteErr != nil {
+				if deleteErr := storage.DeleteFile(s.fieldEncryptor, backup.ID); deleteErr != nil {
 					s.logger.Error(
 						"Failed to delete partial backup file",
 						"backupId",
@@ -324,6 +332,13 @@ func (s *BackupService) MakeBackup(databaseID uuid.UUID, isLastTry bool) {
 	backup.Status = BackupStatusCompleted
 	backup.BackupDurationMs = time.Since(start).Milliseconds()
 
+	// Update backup with encryption metadata if provided
+	if backupMetadata != nil {
+		backup.EncryptionSalt = backupMetadata.EncryptionSalt
+		backup.EncryptionIV = backupMetadata.EncryptionIV
+		backup.Encryption = backupMetadata.Encryption
+	}
+
 	if err := s.backupRepository.Save(backup); err != nil {
 		s.logger.Error("Failed to save backup", "error", err)
 		return
@@ -364,6 +379,11 @@ func (s *BackupService) SendBackupNotification(
 		return
 	}
 
+	workspace, err := s.workspaceService.GetWorkspaceByID(*database.WorkspaceID)
+	if err != nil {
+		return
+	}
+
 	for _, notifier := range database.Notifiers {
 		if !slices.Contains(
 			backupConfig.SendNotificationsOn,
@@ -375,9 +395,17 @@ func (s *BackupService) SendBackupNotification(
 		title := ""
 		switch notificationType {
 		case backups_config.NotificationBackupFailed:
-			title = fmt.Sprintf("❌ Backup failed for database \"%s\"", database.Name)
+			title = fmt.Sprintf(
+				"❌ Backup failed for database \"%s\" (workspace \"%s\")",
+				database.Name,
+				workspace.Name,
+			)
 		case backups_config.NotificationBackupSuccess:
-			title = fmt.Sprintf("✅ Backup completed for database \"%s\"", database.Name)
+			title = fmt.Sprintf(
+				"✅ Backup completed for database \"%s\" (workspace \"%s\")",
+				database.Name,
+				workspace.Name,
+			)
 		}
 
 		message := ""
@@ -427,11 +455,16 @@ func (s *BackupService) CancelBackup(
 		return err
 	}
 
-	if backup.Database.WorkspaceID == nil {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return err
+	}
+
+	if database.WorkspaceID == nil {
 		return errors.New("cannot cancel backup for database without workspace")
 	}
 
-	canManage, err := s.workspaceService.CanUserManageDBs(*backup.Database.WorkspaceID, user)
+	canManage, err := s.workspaceService.CanUserManageDBs(*database.WorkspaceID, user)
 	if err != nil {
 		return err
 	}
@@ -443,18 +476,18 @@ func (s *BackupService) CancelBackup(
 		return errors.New("backup is not in progress")
 	}
 
-	if err := s.backupContextMgr.CancelBackup(backupID); err != nil {
+	if err := s.backupContextManager.CancelBackup(backupID); err != nil {
 		return err
 	}
 
 	s.auditLogService.WriteAuditLog(
 		fmt.Sprintf(
 			"Backup cancelled for database: %s (ID: %s)",
-			backup.Database.Name,
+			database.Name,
 			backupID.String(),
 		),
 		&user.ID,
-		backup.Database.WorkspaceID,
+		database.WorkspaceID,
 	)
 
 	return nil
@@ -469,12 +502,17 @@ func (s *BackupService) GetBackupFile(
 		return nil, err
 	}
 
-	if backup.Database.WorkspaceID == nil {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return nil, err
+	}
+
+	if database.WorkspaceID == nil {
 		return nil, errors.New("cannot download backup for database without workspace")
 	}
 
 	canAccess, _, err := s.workspaceService.CanUserAccessWorkspace(
-		*backup.Database.WorkspaceID,
+		*database.WorkspaceID,
 		user,
 	)
 	if err != nil {
@@ -484,22 +522,17 @@ func (s *BackupService) GetBackupFile(
 		return nil, errors.New("insufficient permissions to download backup for this database")
 	}
 
-	storage, err := s.storageService.GetStorageByID(backup.StorageID)
-	if err != nil {
-		return nil, err
-	}
-
 	s.auditLogService.WriteAuditLog(
 		fmt.Sprintf(
 			"Backup file downloaded for database: %s (ID: %s)",
-			backup.Database.Name,
+			database.Name,
 			backupID.String(),
 		),
 		&user.ID,
-		backup.Database.WorkspaceID,
+		database.WorkspaceID,
 	)
 
-	return storage.GetFile(backup.ID)
+	return s.getBackupReader(backupID)
 }
 
 func (s *BackupService) deleteBackup(backup *Backup) error {
@@ -514,9 +547,12 @@ func (s *BackupService) deleteBackup(backup *Backup) error {
 		return err
 	}
 
-	err = storage.DeleteFile(backup.ID)
+	err = storage.DeleteFile(s.fieldEncryptor, backup.ID)
 	if err != nil {
-		return err
+		// we do not return error here, because sometimes clean up performed
+		// before unavailable storage removal or change - therefore we should
+		// proceed even in case of error
+		s.logger.Error("Failed to delete backup file", "error", err)
 	}
 
 	return s.backupRepository.DeleteByID(backup.ID)
@@ -551,3 +587,91 @@ func (s *BackupService) deleteDbBackups(databaseID uuid.UUID) error {
 
 	return nil
 }
+
+// GetBackupReader returns a reader for the backup file
+// If encrypted, wraps with DecryptionReader
+func (s *BackupService) getBackupReader(backupID uuid.UUID) (io.ReadCloser, error) {
+	backup, err := s.backupRepository.FindByID(backupID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to find backup: %w", err)
+	}
+
+	storage, err := s.storageService.GetStorageByID(backup.StorageID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get storage: %w", err)
+	}
+
+	fileReader, err := storage.GetFile(s.fieldEncryptor, backup.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get backup file: %w", err)
+	}
+
+	// If not encrypted, return raw reader
+	if backup.Encryption == backups_config.BackupEncryptionNone {
+		s.logger.Info("Returning non-encrypted backup", "backupId", backupID)
+		return fileReader, nil
+	}
+
+	// Decrypt on-the-fly for encrypted backups
+	if backup.Encryption != backups_config.BackupEncryptionEncrypted {
+		if err := fileReader.Close(); err != nil {
+			s.logger.Error("Failed to close file reader", "error", err)
+		}
+		return nil, fmt.Errorf("unsupported encryption type: %s", backup.Encryption)
+	}
+
+	if backup.EncryptionSalt == nil || backup.EncryptionIV == nil {
+		if err := fileReader.Close(); err != nil {
+			s.logger.Error("Failed to close file reader", "error", err)
+		}
+		return nil, fmt.Errorf("backup marked as encrypted but missing encryption metadata")
+	}
+
+	// Get master key
+	masterKey, err := s.secretKeyRepo.GetSecretKey()
+	if err != nil {
+		if closeErr := fileReader.Close(); closeErr != nil {
+			s.logger.Error("Failed to close file reader", "error", closeErr)
+		}
+		return nil, fmt.Errorf("failed to get master key: %w", err)
+	}
+
+	// Decode salt and IV
+	salt, err := base64.StdEncoding.DecodeString(*backup.EncryptionSalt)
+	if err != nil {
+		if closeErr := fileReader.Close(); closeErr != nil {
+			s.logger.Error("Failed to close file reader", "error", closeErr)
+		}
+		return nil, fmt.Errorf("failed to decode salt: %w", err)
+	}
+
+	iv, err := base64.StdEncoding.DecodeString(*backup.EncryptionIV)
+	if err != nil {
+		if closeErr := fileReader.Close(); closeErr != nil {
+			s.logger.Error("Failed to close file reader", "error", closeErr)
+		}
+		return nil, fmt.Errorf("failed to decode IV: %w", err)
+	}
+
+	// Wrap with decrypting reader
+	decryptionReader, err := encryption.NewDecryptionReader(
+		fileReader,
+		masterKey,
+		backup.ID,
+		salt,
+		iv,
+	)
+	if err != nil {
+		if closeErr := fileReader.Close(); closeErr != nil {
+			s.logger.Error("Failed to close file reader", "error", closeErr)
+		}
+		return nil, fmt.Errorf("failed to create decrypting reader: %w", err)
+	}
+
+	s.logger.Info("Returning encrypted backup with decryption", "backupId", backupID)
+
+	return &decryptionReaderCloser{
+		decryptionReader,
+		fileReader,
+	}, nil
+}

backend/internal/features/backups/backups/service_test.go

@@ -3,13 +3,17 @@ package backups
 import (
 	"context"
 	"errors"
+	usecases_postgresql "postgresus-backend/internal/features/backups/backups/usecases/postgresql"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/databases"
 	"postgresus-backend/internal/features/notifiers"
 	"postgresus-backend/internal/features/storages"
 	users_enums "postgresus-backend/internal/features/users/enums"
+	users_repositories "postgresus-backend/internal/features/users/repositories"
 	users_testing "postgresus-backend/internal/features/users/testing"
+	workspaces_services "postgresus-backend/internal/features/workspaces/services"
 	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 	"strings"
 	"testing"
@@ -52,11 +56,13 @@ func Test_BackupExecuted_NotificationSent(t *testing.T) {
 			notifiers.GetNotifierService(),
 			mockNotificationSender,
 			backups_config.GetBackupConfigService(),
+			users_repositories.GetSecretKeyRepository(),
+			encryption.GetFieldEncryptor(),
 			&CreateFailedBackupUsecase{},
 			logger.GetLogger(),
 			[]BackupRemoveListener{},
-			nil, // workspaceService
-			nil, // auditLogService
+			workspaces_services.GetWorkspaceService(),
+			nil,
 			NewBackupContextManager(),
 		}
 
@@ -98,11 +104,13 @@ func Test_BackupExecuted_NotificationSent(t *testing.T) {
 			notifiers.GetNotifierService(),
 			mockNotificationSender,
 			backups_config.GetBackupConfigService(),
+			users_repositories.GetSecretKeyRepository(),
+			encryption.GetFieldEncryptor(),
 			&CreateSuccessBackupUsecase{},
 			logger.GetLogger(),
 			[]BackupRemoveListener{},
-			nil, // workspaceService
-			nil, // auditLogService
+			workspaces_services.GetWorkspaceService(),
+			nil,
 			NewBackupContextManager(),
 		}
 
@@ -121,11 +129,13 @@ func Test_BackupExecuted_NotificationSent(t *testing.T) {
 			notifiers.GetNotifierService(),
 			mockNotificationSender,
 			backups_config.GetBackupConfigService(),
+			users_repositories.GetSecretKeyRepository(),
+			encryption.GetFieldEncryptor(),
 			&CreateSuccessBackupUsecase{},
 			logger.GetLogger(),
 			[]BackupRemoveListener{},
-			nil, // workspaceService
-			nil, // auditLogService
+			workspaces_services.GetWorkspaceService(),
+			nil,
 			NewBackupContextManager(),
 		}
 
@@ -170,9 +180,9 @@ func (uc *CreateFailedBackupUsecase) Execute(
 	backupProgressListener func(
 		completedMBs float64,
 	),
-) error {
+) (*usecases_postgresql.BackupMetadata, error) {
 	backupProgressListener(10) // Assume we completed 10MB
-	return errors.New("backup failed")
+	return nil, errors.New("backup failed")
 }
 
 type CreateSuccessBackupUsecase struct {
@@ -187,7 +197,11 @@ func (uc *CreateSuccessBackupUsecase) Execute(
 	backupProgressListener func(
 		completedMBs float64,
 	),
-) error {
+) (*usecases_postgresql.BackupMetadata, error) {
 	backupProgressListener(10) // Assume we completed 10MB
-	return nil
+	return &usecases_postgresql.BackupMetadata{
+		EncryptionSalt: nil,
+		EncryptionIV:   nil,
+		Encryption:     backups_config.BackupEncryptionNone,
+	}, nil
 }

backend/internal/features/backups/backups/usecases/create_backup_uc.go

@@ -15,7 +15,7 @@ type CreateBackupUsecase struct {
 	CreatePostgresqlBackupUsecase *usecases_postgresql.CreatePostgresqlBackupUsecase
 }
 
-// Execute creates a backup of the database and returns the backup size in MB
+// Execute creates a backup of the database and returns the backup metadata
 func (uc *CreateBackupUsecase) Execute(
 	ctx context.Context,
 	backupID uuid.UUID,
@@ -25,7 +25,7 @@ func (uc *CreateBackupUsecase) Execute(
 	backupProgressListener func(
 		completedMBs float64,
 	),
-) error {
+) (*usecases_postgresql.BackupMetadata, error) {
 	if database.Type == databases.DatabaseTypePostgres {
 		return uc.CreatePostgresqlBackupUsecase.Execute(
 			ctx,
@@ -37,5 +37,5 @@ func (uc *CreateBackupUsecase) Execute(
 		)
 	}
 
-	return errors.New("database type not supported")
+	return nil, errors.New("database type not supported")
 }

backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go

@@ -2,6 +2,7 @@ package usecases_postgresql
 
 import (
 	"context"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"io"
@@ -14,17 +15,35 @@ import (
 	"time"
 
 	"postgresus-backend/internal/config"
+	backup_encryption "postgresus-backend/internal/features/backups/backups/encryption"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/databases"
 	pgtypes "postgresus-backend/internal/features/databases/databases/postgresql"
 	"postgresus-backend/internal/features/storages"
+	users_repositories "postgresus-backend/internal/features/users/repositories"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/tools"
 
 	"github.com/google/uuid"
 )
 
+const (
+	backupTimeout            = 23 * time.Hour
+	shutdownCheckInterval    = 1 * time.Second
+	copyBufferSize           = 32 * 1024
+	progressReportIntervalMB = 1.0
+	pgConnectTimeout         = 30
+	compressionLevel         = 5
+	defaultBackupLimit       = 1000
+	exitCodeAccessViolation  = -1073741819
+	exitCodeGenericError     = 1
+	exitCodeConnectionError  = 2
+)
+
 type CreatePostgresqlBackupUsecase struct {
-	logger *slog.Logger
+	logger         *slog.Logger
+	secretKeyRepo  *users_repositories.SecretKeyRepository
+	fieldEncryptor encryption.FieldEncryptor
 }
 
 // Execute creates a backup of the database
@@ -37,7 +56,7 @@ func (uc *CreatePostgresqlBackupUsecase) Execute(
 	backupProgressListener func(
 		completedMBs float64,
 	),
-) error {
+) (*BackupMetadata, error) {
 	uc.logger.Info(
 		"Creating PostgreSQL backup via pg_dump custom format",
 		"databaseId",
@@ -47,38 +66,24 @@ func (uc *CreatePostgresqlBackupUsecase) Execute(
 	)
 
 	if !backupConfig.IsBackupsEnabled {
-		return fmt.Errorf("backups are not enabled for this database: \"%s\"", db.Name)
+		return nil, fmt.Errorf("backups are not enabled for this database: \"%s\"", db.Name)
 	}
 
 	pg := db.Postgresql
 
 	if pg == nil {
-		return fmt.Errorf("postgresql database configuration is required for pg_dump backups")
+		return nil, fmt.Errorf("postgresql database configuration is required for pg_dump backups")
 	}
 
 	if pg.Database == nil || *pg.Database == "" {
-		return fmt.Errorf("database name is required for pg_dump backups")
+		return nil, fmt.Errorf("database name is required for pg_dump backups")
 	}
 
-	args := []string{
-		"-Fc",           // custom format with built-in compression
-		"--no-password", // Use environment variable for password, prevent prompts
-		"-h", pg.Host,
-		"-p", strconv.Itoa(pg.Port),
-		"-U", pg.Username,
-		"-d", *pg.Database,
-		"--verbose", // Add verbose output to help with debugging
-	}
+	args := uc.buildPgDumpArgs(pg)
 
-	// Use zstd compression level 5 for PostgreSQL 15+ (better compression and speed)
-	// Fall back to gzip compression level 5 for older versions
-	if pg.Version == tools.PostgresqlVersion13 || pg.Version == tools.PostgresqlVersion14 ||
-		pg.Version == tools.PostgresqlVersion15 {
-		args = append(args, "-Z", "5")
-		uc.logger.Info("Using gzip compression level 5 (zstd not available)", "version", pg.Version)
-	} else {
-		args = append(args, "--compress=zstd:5")
-		uc.logger.Info("Using zstd compression level 5", "version", pg.Version)
+	decryptedPassword, err := uc.fieldEncryptor.Decrypt(db.ID, pg.Password)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decrypt database password: %w", err)
 	}
 
 	return uc.streamToStorage(
@@ -92,7 +97,7 @@ func (uc *CreatePostgresqlBackupUsecase) Execute(
 			config.GetEnv().PostgresesInstallDir,
 		),
 		args,
-		pg.Password,
+		decryptedPassword,
 		storage,
 		db,
 		backupProgressListener,
@@ -110,36 +115,15 @@ func (uc *CreatePostgresqlBackupUsecase) streamToStorage(
 	storage *storages.Storage,
 	db *databases.Database,
 	backupProgressListener func(completedMBs float64),
-) error {
+) (*BackupMetadata, error) {
 	uc.logger.Info("Streaming PostgreSQL backup to storage", "pgBin", pgBin, "args", args)
 
-	// if backup not fit into 23 hours, Postgresus
-	// seems not to work for such database size
-	ctx, cancel := context.WithTimeout(parentCtx, 23*time.Hour)
+	ctx, cancel := uc.createBackupContext(parentCtx)
 	defer cancel()
 
-	// Monitor for shutdown and cancel context if needed
-	go func() {
-		ticker := time.NewTicker(1 * time.Second)
-		defer ticker.Stop()
-
-		for {
-			select {
-			case <-ctx.Done():
-				return
-			case <-ticker.C:
-				if config.IsShouldShutdown() {
-					cancel()
-					return
-				}
-			}
-		}
-	}()
-
-	// Create temporary .pgpass file as a more reliable alternative to PGPASSWORD
-	pgpassFile, err := uc.createTempPgpassFile(db.Postgresql, password)
+	pgpassFile, err := uc.setupPgpassFile(db.Postgresql, password)
 	if err != nil {
-		return fmt.Errorf("failed to create temporary .pgpass file: %w", err)
+		return nil, err
 	}
 	defer func() {
 		if pgpassFile != "" {
@@ -147,87 +131,21 @@ func (uc *CreatePostgresqlBackupUsecase) streamToStorage(
 		}
 	}()
 
-	// Verify .pgpass file was created successfully
-	if pgpassFile == "" {
-		return fmt.Errorf("temporary .pgpass file was not created")
-	}
-
-	// Verify .pgpass file was created correctly
-	if info, err := os.Stat(pgpassFile); err == nil {
-		uc.logger.Info("Temporary .pgpass file created successfully",
-			"pgpassFile", pgpassFile,
-			"size", info.Size(),
-			"mode", info.Mode(),
-		)
-	} else {
-		return fmt.Errorf("failed to verify .pgpass file: %w", err)
-	}
-
 	cmd := exec.CommandContext(ctx, pgBin, args...)
 	uc.logger.Info("Executing PostgreSQL backup command", "command", cmd.String())
 
-	// Start with system environment variables to preserve Windows PATH, SystemRoot, etc.
-	cmd.Env = os.Environ()
-
-	// Use the .pgpass file for authentication
-	cmd.Env = append(cmd.Env, "PGPASSFILE="+pgpassFile)
-	uc.logger.Info("Using temporary .pgpass file for authentication", "pgpassFile", pgpassFile)
-
-	// Debug password setup (without exposing the actual password)
-	uc.logger.Info("Setting up PostgreSQL environment",
-		"passwordLength", len(password),
-		"passwordEmpty", password == "",
-		"pgBin", pgBin,
-		"usingPgpassFile", true,
-		"parallelJobs", backupConfig.CpuCount,
-	)
-
-	// Add PostgreSQL-specific environment variables
-	cmd.Env = append(cmd.Env, "PGCLIENTENCODING=UTF8")
-	cmd.Env = append(cmd.Env, "PGCONNECT_TIMEOUT=30")
-
-	// Add encoding-related environment variables to handle character encoding issues
-	cmd.Env = append(cmd.Env, "LC_ALL=C.UTF-8")
-	cmd.Env = append(cmd.Env, "LANG=C.UTF-8")
-
-	// Add PostgreSQL-specific encoding settings
-	cmd.Env = append(cmd.Env, "PGOPTIONS=--client-encoding=UTF8")
-
-	shouldRequireSSL := db.Postgresql.IsHttps
-
-	// Require SSL when explicitly configured
-	if shouldRequireSSL {
-		cmd.Env = append(cmd.Env, "PGSSLMODE=require")
-		uc.logger.Info("Using required SSL mode", "configuredHttps", db.Postgresql.IsHttps)
-	} else {
-		// SSL not explicitly required, but prefer it if available
-		cmd.Env = append(cmd.Env, "PGSSLMODE=prefer")
-		uc.logger.Info("Using preferred SSL mode", "configuredHttps", db.Postgresql.IsHttps)
-	}
-
-	// Set other SSL parameters to avoid certificate issues
-	cmd.Env = append(cmd.Env, "PGSSLCERT=")     // No client certificate
-	cmd.Env = append(cmd.Env, "PGSSLKEY=")      // No client key
-	cmd.Env = append(cmd.Env, "PGSSLROOTCERT=") // No root certificate verification
-	cmd.Env = append(cmd.Env, "PGSSLCRL=")      // No certificate revocation list
-
-	// Verify executable exists and is accessible
-	if _, err := exec.LookPath(pgBin); err != nil {
-		return fmt.Errorf(
-			"PostgreSQL executable not found or not accessible: %s - %w",
-			pgBin,
-			err,
-		)
+	if err := uc.setupPgEnvironment(cmd, pgpassFile, db.Postgresql.IsHttps, password, backupConfig.CpuCount, pgBin); err != nil {
+		return nil, err
 	}
 
 	pgStdout, err := cmd.StdoutPipe()
 	if err != nil {
-		return fmt.Errorf("stdout pipe: %w", err)
+		return nil, fmt.Errorf("stdout pipe: %w", err)
 	}
 
 	pgStderr, err := cmd.StderrPipe()
 	if err != nil {
-		return fmt.Errorf("stderr pipe: %w", err)
+		return nil, fmt.Errorf("stderr pipe: %w", err)
 	}
 
 	// Capture stderr in a separate goroutine to ensure we don't miss any error output
@@ -237,23 +155,31 @@ func (uc *CreatePostgresqlBackupUsecase) streamToStorage(
 		stderrCh <- stderrOutput
 	}()
 
-	// A pipe connecting pg_dump output → storage
 	storageReader, storageWriter := io.Pipe()
 
-	// Create a counting writer to track bytes
-	countingWriter := &CountingWriter{writer: storageWriter}
+	finalWriter, encryptionWriter, backupMetadata, err := uc.setupBackupEncryption(
+		backupID,
+		backupConfig,
+		storageWriter,
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	countingWriter := &CountingWriter{writer: finalWriter}
 
 	// The backup ID becomes the object key / filename in storage
 
 	// Start streaming into storage in its own goroutine
 	saveErrCh := make(chan error, 1)
 	go func() {
-		saveErrCh <- storage.SaveFile(uc.logger, backupID, storageReader)
+		saveErr := storage.SaveFile(uc.fieldEncryptor, uc.logger, backupID, storageReader)
+		saveErrCh <- saveErr
 	}()
 
 	// Start pg_dump
 	if err = cmd.Start(); err != nil {
-		return fmt.Errorf("start %s: %w", filepath.Base(pgBin), err)
+		return nil, fmt.Errorf("start %s: %w", filepath.Base(pgBin), err)
 	}
 
 	// Copy pg output directly to storage with shutdown checks
@@ -278,26 +204,14 @@ func (uc *CreatePostgresqlBackupUsecase) streamToStorage(
 	// Check for shutdown or cancellation before finalizing
 	select {
 	case <-ctx.Done():
-		if pipeWriter, ok := countingWriter.writer.(*io.PipeWriter); ok {
-			if err := pipeWriter.Close(); err != nil {
-				uc.logger.Error("Failed to close counting writer", "error", err)
-			}
-		}
-
-		<-saveErrCh // Wait for storage to finish
-
-		if config.IsShouldShutdown() {
-			return fmt.Errorf("backup cancelled due to shutdown")
-		}
-		return fmt.Errorf("backup cancelled")
+		uc.cleanupOnCancellation(encryptionWriter, storageWriter, saveErrCh)
+		return nil, uc.checkCancellationReason()
 	default:
 	}
 
-	// Close the pipe writer to signal end of data
-	if pipeWriter, ok := countingWriter.writer.(*io.PipeWriter); ok {
-		if err := pipeWriter.Close(); err != nil {
-			uc.logger.Error("Failed to close counting writer", "error", err)
-		}
+	if err := uc.closeWriters(encryptionWriter, storageWriter); err != nil {
+		<-saveErrCh
+		return nil, err
 	}
 
 	// Wait until storage ends reading
@@ -312,149 +226,34 @@ func (uc *CreatePostgresqlBackupUsecase) streamToStorage(
 
 	switch {
 	case waitErr != nil:
-		select {
-		case <-ctx.Done():
-			if config.IsShouldShutdown() {
-				return fmt.Errorf("backup cancelled due to shutdown")
-			}
-			return fmt.Errorf("backup cancelled")
-		default:
+		if err := uc.checkCancellation(ctx); err != nil {
+			return nil, err
 		}
-
-		// Enhanced error handling for PostgreSQL connection and SSL issues
-		stderrStr := string(stderrOutput)
-		errorMsg := fmt.Sprintf(
-			"%s failed: %v – stderr: %s",
-			filepath.Base(pgBin),
-			waitErr,
-			stderrStr,
-		)
-
-		// Check for specific PostgreSQL error patterns
-		if exitErr, ok := waitErr.(*exec.ExitError); ok {
-			exitCode := exitErr.ExitCode()
-
-			// Enhanced debugging for exit status 1 with empty stderr
-			if exitCode == 1 && strings.TrimSpace(stderrStr) == "" {
-				uc.logger.Error("pg_dump failed with exit status 1 but no stderr output",
-					"pgBin", pgBin,
-					"args", args,
-					"env_vars", []string{
-						"PGCLIENTENCODING=UTF8",
-						"PGCONNECT_TIMEOUT=30",
-						"LC_ALL=C.UTF-8",
-						"LANG=C.UTF-8",
-						"PGOPTIONS=--client-encoding=UTF8",
-					},
-				)
-
-				errorMsg = fmt.Sprintf(
-					"%s failed with exit status 1 but provided no error details. "+
-						"This often indicates: "+
-						"1) Connection timeout or refused connection, "+
-						"2) Authentication failure with incorrect credentials, "+
-						"3) Database does not exist, "+
-						"4) Network connectivity issues, "+
-						"5) PostgreSQL server not running. "+
-						"Command executed: %s %s",
-					filepath.Base(pgBin),
-					pgBin,
-					strings.Join(args, " "),
-				)
-			} else if exitCode == -1073741819 { // 0xC0000005 in decimal
-				uc.logger.Error("PostgreSQL tool crashed with access violation",
-					"pgBin", pgBin,
-					"args", args,
-					"exitCode", fmt.Sprintf("0x%X", uint32(exitCode)),
-				)
-
-				errorMsg = fmt.Sprintf(
-					"%s crashed with access violation (0xC0000005). This may indicate incompatible PostgreSQL version, corrupted installation, or connection issues. stderr: %s",
-					filepath.Base(pgBin),
-					stderrStr,
-				)
-			} else if exitCode == 1 || exitCode == 2 {
-				// Check for common connection and authentication issues
-				if containsIgnoreCase(stderrStr, "pg_hba.conf") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL connection rejected by server configuration (pg_hba.conf). The server may not allow connections from your IP address or may require different authentication settings. stderr: %s",
-						stderrStr,
-					)
-				} else if containsIgnoreCase(stderrStr, "no password supplied") || containsIgnoreCase(stderrStr, "fe_sendauth") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL authentication failed - no password supplied. "+
-							"PGPASSWORD environment variable may not be working correctly on this system. "+
-							"Password length: %d, Password empty: %v. "+
-							"Consider using a .pgpass file as an alternative. stderr: %s",
-						len(password),
-						password == "",
-						stderrStr,
-					)
-				} else if containsIgnoreCase(stderrStr, "ssl") && containsIgnoreCase(stderrStr, "connection") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL SSL connection failed. The server may require SSL encryption or have SSL configuration issues. stderr: %s",
-						stderrStr,
-					)
-				} else if containsIgnoreCase(stderrStr, "connection") && containsIgnoreCase(stderrStr, "refused") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL connection refused. Check if the server is running and accessible from your network. stderr: %s",
-						stderrStr,
-					)
-				} else if containsIgnoreCase(stderrStr, "authentication") || containsIgnoreCase(stderrStr, "password") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL authentication failed. Check username and password. stderr: %s",
-						stderrStr,
-					)
-				} else if containsIgnoreCase(stderrStr, "timeout") {
-					errorMsg = fmt.Sprintf(
-						"PostgreSQL connection timeout. The server may be unreachable or overloaded. stderr: %s",
-						stderrStr,
-					)
-				}
-			}
-		}
-
-		return errors.New(errorMsg)
+		return nil, uc.buildPgDumpErrorMessage(waitErr, stderrOutput, pgBin, args, password)
 	case copyErr != nil:
-		select {
-		case <-ctx.Done():
-			if config.IsShouldShutdown() {
-				return fmt.Errorf("backup cancelled due to shutdown")
-			}
-			return fmt.Errorf("backup cancelled")
-		default:
+		if err := uc.checkCancellation(ctx); err != nil {
+			return nil, err
 		}
-
-		return fmt.Errorf("copy to storage: %w", copyErr)
+		return nil, fmt.Errorf("copy to storage: %w", copyErr)
 	case saveErr != nil:
-		select {
-		case <-ctx.Done():
-			if config.IsShouldShutdown() {
-				return fmt.Errorf("backup cancelled due to shutdown")
-			}
-			return fmt.Errorf("backup cancelled")
-		default:
+		if err := uc.checkCancellation(ctx); err != nil {
+			return nil, err
 		}
-
-		return fmt.Errorf("save to storage: %w", saveErr)
+		return nil, fmt.Errorf("save to storage: %w", saveErr)
 	}
 
-	return nil
+	return &backupMetadata, nil
 }
 
-// copyWithShutdownCheck copies data from src to dst while checking for shutdown
 func (uc *CreatePostgresqlBackupUsecase) copyWithShutdownCheck(
 	ctx context.Context,
 	dst io.Writer,
 	src io.Reader,
 	backupProgressListener func(completedMBs float64),
 ) (int64, error) {
-	buf := make([]byte, 32*1024) // 32KB buffer
+	buf := make([]byte, copyBufferSize)
 	var totalBytesWritten int64
-
-	// Progress reporting interval - report every 1MB of data
 	var lastReportedMB float64
-	const reportIntervalMB = 1.0
 
 	for {
 		select {
@@ -487,12 +286,9 @@ func (uc *CreatePostgresqlBackupUsecase) copyWithShutdownCheck(
 
 			totalBytesWritten += int64(bytesWritten)
 
-			// Report progress based on total size
 			if backupProgressListener != nil {
 				currentSizeMB := float64(totalBytesWritten) / (1024 * 1024)
-
-				// Only report if we've written at least 1MB more data than last report
-				if currentSizeMB >= lastReportedMB+reportIntervalMB {
+				if currentSizeMB >= lastReportedMB+progressReportIntervalMB {
 					backupProgressListener(currentSizeMB)
 					lastReportedMB = currentSizeMB
 				}
@@ -503,7 +299,6 @@ func (uc *CreatePostgresqlBackupUsecase) copyWithShutdownCheck(
 			if readErr != io.EOF {
 				return totalBytesWritten, readErr
 			}
-
 			break
 		}
 	}
@@ -511,12 +306,412 @@ func (uc *CreatePostgresqlBackupUsecase) copyWithShutdownCheck(
 	return totalBytesWritten, nil
 }
 
-// containsIgnoreCase checks if a string contains a substring, ignoring case
-func containsIgnoreCase(str, substr string) bool {
-	return strings.Contains(strings.ToLower(str), strings.ToLower(substr))
+func (uc *CreatePostgresqlBackupUsecase) buildPgDumpArgs(pg *pgtypes.PostgresqlDatabase) []string {
+	args := []string{
+		"-Fc",
+		"--no-password",
+		"-h", pg.Host,
+		"-p", strconv.Itoa(pg.Port),
+		"-U", pg.Username,
+		"-d", *pg.Database,
+		"--verbose",
+	}
+
+	compressionArgs := uc.getCompressionArgs(pg.Version)
+	return append(args, compressionArgs...)
+}
+
+func (uc *CreatePostgresqlBackupUsecase) getCompressionArgs(
+	version tools.PostgresqlVersion,
+) []string {
+	if uc.isOlderPostgresVersion(version) {
+		uc.logger.Info("Using gzip compression level 5 (zstd not available)", "version", version)
+		return []string{"-Z", strconv.Itoa(compressionLevel)}
+	}
+
+	uc.logger.Info("Using zstd compression level 5", "version", version)
+	return []string{fmt.Sprintf("--compress=zstd:%d", compressionLevel)}
+}
+
+func (uc *CreatePostgresqlBackupUsecase) isOlderPostgresVersion(
+	version tools.PostgresqlVersion,
+) bool {
+	return version == tools.PostgresqlVersion12 ||
+		version == tools.PostgresqlVersion13 ||
+		version == tools.PostgresqlVersion14 ||
+		version == tools.PostgresqlVersion15
+}
+
+func (uc *CreatePostgresqlBackupUsecase) createBackupContext(
+	parentCtx context.Context,
+) (context.Context, context.CancelFunc) {
+	ctx, cancel := context.WithTimeout(parentCtx, backupTimeout)
+
+	go func() {
+		ticker := time.NewTicker(shutdownCheckInterval)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				if config.IsShouldShutdown() {
+					cancel()
+					return
+				}
+			}
+		}
+	}()
+
+	return ctx, cancel
+}
+
+func (uc *CreatePostgresqlBackupUsecase) setupPgpassFile(
+	pgConfig *pgtypes.PostgresqlDatabase,
+	password string,
+) (string, error) {
+	pgpassFile, err := uc.createTempPgpassFile(pgConfig, password)
+	if err != nil {
+		return "", fmt.Errorf("failed to create temporary .pgpass file: %w", err)
+	}
+
+	if pgpassFile == "" {
+		return "", fmt.Errorf("temporary .pgpass file was not created")
+	}
+
+	if info, err := os.Stat(pgpassFile); err == nil {
+		uc.logger.Info("Temporary .pgpass file created successfully",
+			"pgpassFile", pgpassFile,
+			"size", info.Size(),
+			"mode", info.Mode(),
+		)
+	} else {
+		return "", fmt.Errorf("failed to verify .pgpass file: %w", err)
+	}
+
+	return pgpassFile, nil
+}
+
+func (uc *CreatePostgresqlBackupUsecase) setupPgEnvironment(
+	cmd *exec.Cmd,
+	pgpassFile string,
+	shouldRequireSSL bool,
+	password string,
+	cpuCount int,
+	pgBin string,
+) error {
+	cmd.Env = os.Environ()
+	cmd.Env = append(cmd.Env, "PGPASSFILE="+pgpassFile)
+
+	uc.logger.Info("Using temporary .pgpass file for authentication", "pgpassFile", pgpassFile)
+	uc.logger.Info("Setting up PostgreSQL environment",
+		"passwordLength", len(password),
+		"passwordEmpty", password == "",
+		"pgBin", pgBin,
+		"usingPgpassFile", true,
+		"parallelJobs", cpuCount,
+	)
+
+	cmd.Env = append(cmd.Env,
+		"PGCLIENTENCODING=UTF8",
+		"PGCONNECT_TIMEOUT="+strconv.Itoa(pgConnectTimeout),
+		"LC_ALL=C.UTF-8",
+		"LANG=C.UTF-8",
+		"PGOPTIONS=--client-encoding=UTF8",
+	)
+
+	if shouldRequireSSL {
+		cmd.Env = append(cmd.Env, "PGSSLMODE=require")
+		uc.logger.Info("Using required SSL mode", "configuredHttps", shouldRequireSSL)
+	} else {
+		cmd.Env = append(cmd.Env, "PGSSLMODE=prefer")
+		uc.logger.Info("Using preferred SSL mode", "configuredHttps", shouldRequireSSL)
+	}
+
+	cmd.Env = append(cmd.Env,
+		"PGSSLCERT=",
+		"PGSSLKEY=",
+		"PGSSLROOTCERT=",
+		"PGSSLCRL=",
+	)
+
+	if _, err := exec.LookPath(pgBin); err != nil {
+		return fmt.Errorf("PostgreSQL executable not found or not accessible: %s - %w", pgBin, err)
+	}
+
+	return nil
+}
+
+func (uc *CreatePostgresqlBackupUsecase) setupBackupEncryption(
+	backupID uuid.UUID,
+	backupConfig *backups_config.BackupConfig,
+	storageWriter io.WriteCloser,
+) (io.Writer, *backup_encryption.EncryptionWriter, BackupMetadata, error) {
+	metadata := BackupMetadata{}
+
+	if backupConfig.Encryption != backups_config.BackupEncryptionEncrypted {
+		metadata.Encryption = backups_config.BackupEncryptionNone
+		uc.logger.Info("Encryption disabled for backup", "backupId", backupID)
+		return storageWriter, nil, metadata, nil
+	}
+
+	salt, err := backup_encryption.GenerateSalt()
+	if err != nil {
+		return nil, nil, metadata, fmt.Errorf("failed to generate salt: %w", err)
+	}
+
+	nonce, err := backup_encryption.GenerateNonce()
+	if err != nil {
+		return nil, nil, metadata, fmt.Errorf("failed to generate nonce: %w", err)
+	}
+
+	masterKey, err := uc.secretKeyRepo.GetSecretKey()
+	if err != nil {
+		return nil, nil, metadata, fmt.Errorf("failed to get master key: %w", err)
+	}
+
+	encWriter, err := backup_encryption.NewEncryptionWriter(
+		storageWriter,
+		masterKey,
+		backupID,
+		salt,
+		nonce,
+	)
+	if err != nil {
+		return nil, nil, metadata, fmt.Errorf("failed to create encrypting writer: %w", err)
+	}
+
+	saltBase64 := base64.StdEncoding.EncodeToString(salt)
+	nonceBase64 := base64.StdEncoding.EncodeToString(nonce)
+	metadata.EncryptionSalt = &saltBase64
+	metadata.EncryptionIV = &nonceBase64
+	metadata.Encryption = backups_config.BackupEncryptionEncrypted
+
+	uc.logger.Info("Encryption enabled for backup", "backupId", backupID)
+	return encWriter, encWriter, metadata, nil
+}
+
+func (uc *CreatePostgresqlBackupUsecase) cleanupOnCancellation(
+	encryptionWriter *backup_encryption.EncryptionWriter,
+	storageWriter io.WriteCloser,
+	saveErrCh chan error,
+) {
+	if encryptionWriter != nil {
+		go func() {
+			if closeErr := encryptionWriter.Close(); closeErr != nil {
+				uc.logger.Error(
+					"Failed to close encrypting writer during cancellation",
+					"error",
+					closeErr,
+				)
+			}
+		}()
+	}
+
+	if err := storageWriter.Close(); err != nil {
+		uc.logger.Error("Failed to close pipe writer during cancellation", "error", err)
+	}
+
+	<-saveErrCh
+}
+
+func (uc *CreatePostgresqlBackupUsecase) closeWriters(
+	encryptionWriter *backup_encryption.EncryptionWriter,
+	storageWriter io.WriteCloser,
+) error {
+	encryptionCloseErrCh := make(chan error, 1)
+	if encryptionWriter != nil {
+		go func() {
+			closeErr := encryptionWriter.Close()
+			if closeErr != nil {
+				uc.logger.Error("Failed to close encrypting writer", "error", closeErr)
+			}
+			encryptionCloseErrCh <- closeErr
+		}()
+	} else {
+		encryptionCloseErrCh <- nil
+	}
+
+	encryptionCloseErr := <-encryptionCloseErrCh
+	if encryptionCloseErr != nil {
+		if err := storageWriter.Close(); err != nil {
+			uc.logger.Error("Failed to close pipe writer after encryption error", "error", err)
+		}
+		return fmt.Errorf("failed to close encryption writer: %w", encryptionCloseErr)
+	}
+
+	if err := storageWriter.Close(); err != nil {
+		uc.logger.Error("Failed to close pipe writer", "error", err)
+		return err
+	}
+
+	return nil
+}
+
+func (uc *CreatePostgresqlBackupUsecase) checkCancellation(ctx context.Context) error {
+	select {
+	case <-ctx.Done():
+		if config.IsShouldShutdown() {
+			return fmt.Errorf("backup cancelled due to shutdown")
+		}
+		return fmt.Errorf("backup cancelled")
+	default:
+		return nil
+	}
+}
+
+func (uc *CreatePostgresqlBackupUsecase) checkCancellationReason() error {
+	if config.IsShouldShutdown() {
+		return fmt.Errorf("backup cancelled due to shutdown")
+	}
+	return fmt.Errorf("backup cancelled")
+}
+
+func (uc *CreatePostgresqlBackupUsecase) buildPgDumpErrorMessage(
+	waitErr error,
+	stderrOutput []byte,
+	pgBin string,
+	args []string,
+	password string,
+) error {
+	stderrStr := string(stderrOutput)
+	errorMsg := fmt.Sprintf("%s failed: %v – stderr: %s", filepath.Base(pgBin), waitErr, stderrStr)
+
+	exitErr, ok := waitErr.(*exec.ExitError)
+	if !ok {
+		return errors.New(errorMsg)
+	}
+
+	exitCode := exitErr.ExitCode()
+
+	if exitCode == exitCodeGenericError && strings.TrimSpace(stderrStr) == "" {
+		return uc.handleExitCode1NoStderr(pgBin, args)
+	}
+
+	if exitCode == exitCodeAccessViolation {
+		return uc.handleAccessViolation(pgBin, stderrStr)
+	}
+
+	if exitCode == exitCodeGenericError || exitCode == exitCodeConnectionError {
+		return uc.handleConnectionErrors(stderrStr, password)
+	}
+
+	return errors.New(errorMsg)
+}
+
+func (uc *CreatePostgresqlBackupUsecase) handleExitCode1NoStderr(
+	pgBin string,
+	args []string,
+) error {
+	uc.logger.Error("pg_dump failed with exit status 1 but no stderr output",
+		"pgBin", pgBin,
+		"args", args,
+		"env_vars", []string{
+			"PGCLIENTENCODING=UTF8",
+			"PGCONNECT_TIMEOUT=" + strconv.Itoa(pgConnectTimeout),
+			"LC_ALL=C.UTF-8",
+			"LANG=C.UTF-8",
+			"PGOPTIONS=--client-encoding=UTF8",
+		},
+	)
+
+	return fmt.Errorf(
+		"%s failed with exit status 1 but provided no error details. "+
+			"This often indicates: "+
+			"1) Connection timeout or refused connection, "+
+			"2) Authentication failure with incorrect credentials, "+
+			"3) Database does not exist, "+
+			"4) Network connectivity issues, "+
+			"5) PostgreSQL server not running. "+
+			"Command executed: %s %s",
+		filepath.Base(pgBin),
+		pgBin,
+		strings.Join(args, " "),
+	)
+}
+
+func (uc *CreatePostgresqlBackupUsecase) handleAccessViolation(
+	pgBin string,
+	stderrStr string,
+) error {
+	uc.logger.Error("PostgreSQL tool crashed with access violation",
+		"pgBin", pgBin,
+		"exitCode", "0xC0000005",
+	)
+
+	return fmt.Errorf(
+		"%s crashed with access violation (0xC0000005). "+
+			"This may indicate incompatible PostgreSQL version, corrupted installation, or connection issues. "+
+			"stderr: %s",
+		filepath.Base(pgBin),
+		stderrStr,
+	)
+}
+
+func (uc *CreatePostgresqlBackupUsecase) handleConnectionErrors(
+	stderrStr string,
+	password string,
+) error {
+	if containsIgnoreCase(stderrStr, "pg_hba.conf") {
+		return fmt.Errorf(
+			"PostgreSQL connection rejected by server configuration (pg_hba.conf). "+
+				"The server may not allow connections from your IP address or may require different authentication settings. "+
+				"stderr: %s",
+			stderrStr,
+		)
+	}
+
+	if containsIgnoreCase(stderrStr, "no password supplied") ||
+		containsIgnoreCase(stderrStr, "fe_sendauth") {
+		return fmt.Errorf(
+			"PostgreSQL authentication failed - no password supplied. "+
+				"PGPASSWORD environment variable may not be working correctly on this system. "+
+				"Password length: %d, Password empty: %v. "+
+				"Consider using a .pgpass file as an alternative. "+
+				"stderr: %s",
+			len(password),
+			password == "",
+			stderrStr,
+		)
+	}
+
+	if containsIgnoreCase(stderrStr, "ssl") && containsIgnoreCase(stderrStr, "connection") {
+		return fmt.Errorf(
+			"PostgreSQL SSL connection failed. "+
+				"The server may require SSL encryption or have SSL configuration issues. "+
+				"stderr: %s",
+			stderrStr,
+		)
+	}
+
+	if containsIgnoreCase(stderrStr, "connection") && containsIgnoreCase(stderrStr, "refused") {
+		return fmt.Errorf(
+			"PostgreSQL connection refused. "+
+				"Check if the server is running and accessible from your network. "+
+				"stderr: %s",
+			stderrStr,
+		)
+	}
+
+	if containsIgnoreCase(stderrStr, "authentication") ||
+		containsIgnoreCase(stderrStr, "password") {
+		return fmt.Errorf(
+			"PostgreSQL authentication failed. Check username and password. stderr: %s",
+			stderrStr,
+		)
+	}
+
+	if containsIgnoreCase(stderrStr, "timeout") {
+		return fmt.Errorf(
+			"PostgreSQL connection timeout. The server may be unreachable or overloaded. stderr: %s",
+			stderrStr,
+		)
+	}
+
+	return fmt.Errorf("PostgreSQL connection or authentication error. stderr: %s", stderrStr)
 }
 
-// createTempPgpassFile creates a temporary .pgpass file with the given password
 func (uc *CreatePostgresqlBackupUsecase) createTempPgpassFile(
 	pgConfig *pgtypes.PostgresqlDatabase,
 	password string,
@@ -532,7 +727,6 @@ func (uc *CreatePostgresqlBackupUsecase) createTempPgpassFile(
 		password,
 	)
 
-	// it always create unique directory like /tmp/pgpass-1234567890
 	tempDir, err := os.MkdirTemp("", "pgpass")
 	if err != nil {
 		return "", fmt.Errorf("failed to create temporary directory: %w", err)
@@ -546,3 +740,7 @@ func (uc *CreatePostgresqlBackupUsecase) createTempPgpassFile(
 
 	return pgpassFile, nil
 }
+
+func containsIgnoreCase(str, substr string) bool {
+	return strings.Contains(strings.ToLower(str), strings.ToLower(substr))
+}

backend/internal/features/backups/backups/usecases/postgresql/di.go

@@ -1,11 +1,15 @@
 package usecases_postgresql
 
 import (
+	users_repositories "postgresus-backend/internal/features/users/repositories"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 )
 
 var createPostgresqlBackupUsecase = &CreatePostgresqlBackupUsecase{
 	logger.GetLogger(),
+	users_repositories.GetSecretKeyRepository(),
+	encryption.GetFieldEncryptor(),
 }
 
 func GetCreatePostgresqlBackupUsecase() *CreatePostgresqlBackupUsecase {

backend/internal/features/backups/backups/usecases/postgresql/dto.go

@@ -0,0 +1,15 @@
+package usecases_postgresql
+
+import backups_config "postgresus-backend/internal/features/backups/config"
+
+type EncryptionMetadata struct {
+	Salt       string
+	IV         string
+	Encryption backups_config.BackupEncryption
+}
+
+type BackupMetadata struct {
+	EncryptionSalt *string
+	EncryptionIV   *string
+	Encryption     backups_config.BackupEncryption
+}

backend/internal/features/backups/config/controller.go

@@ -20,15 +20,15 @@ func (c *BackupConfigController) RegisterRoutes(router *gin.RouterGroup) {
 
 // SaveBackupConfig
 // @Summary Save backup configuration
-// @Description Save or update backup configuration for a database
+// @Description Save or update backup configuration for a database. Encryption can be set to NONE (no encryption) or ENCRYPTED (AES-256-GCM encryption).
 // @Tags backup-configs
 // @Accept json
 // @Produce json
-// @Param request body BackupConfig true "Backup configuration data"
-// @Success 200 {object} BackupConfig
-// @Failure 400
-// @Failure 401
-// @Failure 500
+// @Param request body BackupConfig true "Backup configuration data (encryption field: NONE or ENCRYPTED)"
+// @Success 200 {object} BackupConfig "Returns the saved backup configuration including encryption settings"
+// @Failure 400 {object} map[string]string "Invalid encryption value or other validation errors"
+// @Failure 401 {object} map[string]string "User not authenticated"
+// @Failure 500 {object} map[string]string "Internal server error"
 // @Router /backup-configs/save [post]
 func (c *BackupConfigController) SaveBackupConfig(ctx *gin.Context) {
 	user, ok := users_middleware.GetUserFromContext(ctx)
@@ -57,14 +57,14 @@ func (c *BackupConfigController) SaveBackupConfig(ctx *gin.Context) {
 
 // GetBackupConfigByDbID
 // @Summary Get backup configuration by database ID
-// @Description Get backup configuration for a specific database
+// @Description Get backup configuration for a specific database including encryption settings (NONE or ENCRYPTED)
 // @Tags backup-configs
 // @Produce json
 // @Param id path string true "Database ID"
-// @Success 200 {object} BackupConfig
-// @Failure 400
-// @Failure 401
-// @Failure 404
+// @Success 200 {object} BackupConfig "Returns backup configuration with encryption field"
+// @Failure 400 {object} map[string]string "Invalid database ID"
+// @Failure 401 {object} map[string]string "User not authenticated"
+// @Failure 404 {object} map[string]string "Backup configuration not found"
 // @Router /backup-configs/database/{id} [get]
 func (c *BackupConfigController) GetBackupConfigByDbID(ctx *gin.Context) {
 	user, ok := users_middleware.GetUserFromContext(ctx)
@@ -94,7 +94,6 @@ func (c *BackupConfigController) GetBackupConfigByDbID(ctx *gin.Context) {
 // @Tags backup-configs
 // @Produce json
 // @Param id path string true "Storage ID"
-// @Param workspace_id query string true "Workspace ID"
 // @Success 200 {object} map[string]bool
 // @Failure 400
 // @Failure 401
@@ -113,19 +112,7 @@ func (c *BackupConfigController) IsStorageUsing(ctx *gin.Context) {
 		return
 	}
 
-	workspaceIDStr := ctx.Query("workspace_id")
-	if workspaceIDStr == "" {
-		ctx.JSON(http.StatusBadRequest, gin.H{"error": "workspace_id query parameter is required"})
-		return
-	}
-
-	workspaceID, err := uuid.Parse(workspaceIDStr)
-	if err != nil {
-		ctx.JSON(http.StatusBadRequest, gin.H{"error": "invalid workspace_id"})
-		return
-	}
-
-	isUsing, err := c.backupConfigService.IsStorageUsing(user, workspaceID, id)
+	isUsing, err := c.backupConfigService.IsStorageUsing(user, id)
 	if err != nil {
 		ctx.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return

backend/internal/features/backups/config/controller_test.go

@@ -341,7 +341,7 @@ func Test_IsStorageUsing_PermissionsEnforced(t *testing.T) {
 				test_utils.MakeGetRequestAndUnmarshal(
 					t,
 					router,
-					"/api/v1/backup-configs/storage/"+storage.ID.String()+"/is-using?workspace_id="+workspace.ID.String(),
+					"/api/v1/backup-configs/storage/"+storage.ID.String()+"/is-using",
 					"Bearer "+testUserToken,
 					tt.expectedStatusCode,
 					&response,
@@ -354,7 +354,7 @@ func Test_IsStorageUsing_PermissionsEnforced(t *testing.T) {
 				testResp := test_utils.MakeGetRequest(
 					t,
 					router,
-					"/api/v1/backup-configs/storage/"+storage.ID.String()+"/is-using?workspace_id="+workspace.ID.String(),
+					"/api/v1/backup-configs/storage/"+storage.ID.String()+"/is-using",
 					"Bearer "+testUserToken,
 					tt.expectedStatusCode,
 				)
@@ -368,6 +368,86 @@ func Test_IsStorageUsing_PermissionsEnforced(t *testing.T) {
 	}
 }
 
+func Test_SaveBackupConfig_WithEncryptionNone_ConfigSaved(t *testing.T) {
+	router := createTestRouter()
+	owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
+	workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
+
+	database := createTestDatabaseViaAPI("Test Database", workspace.ID, owner.Token, router)
+
+	timeOfDay := "04:00"
+	request := BackupConfig{
+		DatabaseID:       database.ID,
+		IsBackupsEnabled: true,
+		StorePeriod:      period.PeriodWeek,
+		BackupInterval: &intervals.Interval{
+			Interval:  intervals.IntervalDaily,
+			TimeOfDay: &timeOfDay,
+		},
+		SendNotificationsOn: []BackupNotificationType{
+			NotificationBackupFailed,
+		},
+		CpuCount:            2,
+		IsRetryIfFailed:     true,
+		MaxFailedTriesCount: 3,
+		Encryption:          BackupEncryptionNone,
+	}
+
+	var response BackupConfig
+	test_utils.MakePostRequestAndUnmarshal(
+		t,
+		router,
+		"/api/v1/backup-configs/save",
+		"Bearer "+owner.Token,
+		request,
+		http.StatusOK,
+		&response,
+	)
+
+	assert.Equal(t, database.ID, response.DatabaseID)
+	assert.Equal(t, BackupEncryptionNone, response.Encryption)
+}
+
+func Test_SaveBackupConfig_WithEncryptionEncrypted_ConfigSaved(t *testing.T) {
+	router := createTestRouter()
+	owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
+	workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
+
+	database := createTestDatabaseViaAPI("Test Database", workspace.ID, owner.Token, router)
+
+	timeOfDay := "04:00"
+	request := BackupConfig{
+		DatabaseID:       database.ID,
+		IsBackupsEnabled: true,
+		StorePeriod:      period.PeriodWeek,
+		BackupInterval: &intervals.Interval{
+			Interval:  intervals.IntervalDaily,
+			TimeOfDay: &timeOfDay,
+		},
+		SendNotificationsOn: []BackupNotificationType{
+			NotificationBackupFailed,
+		},
+		CpuCount:            2,
+		IsRetryIfFailed:     true,
+		MaxFailedTriesCount: 3,
+		Encryption:          BackupEncryptionEncrypted,
+	}
+
+	var response BackupConfig
+	test_utils.MakePostRequestAndUnmarshal(
+		t,
+		router,
+		"/api/v1/backup-configs/save",
+		"Bearer "+owner.Token,
+		request,
+		http.StatusOK,
+		&response,
+	)
+
+	assert.Equal(t, database.ID, response.DatabaseID)
+	assert.Equal(t, BackupEncryptionEncrypted, response.Encryption)
+}
+
 func createTestDatabaseViaAPI(
 	name string,
 	workspaceID uuid.UUID,

backend/internal/features/backups/config/enums.go

@@ -6,3 +6,10 @@ const (
 	NotificationBackupFailed  BackupNotificationType = "BACKUP_FAILED"
 	NotificationBackupSuccess BackupNotificationType = "BACKUP_SUCCESS"
 )
+
+type BackupEncryption string
+
+const (
+	BackupEncryptionNone      BackupEncryption = "NONE"
+	BackupEncryptionEncrypted BackupEncryption = "ENCRYPTED"
+)

backend/internal/features/backups/config/model.go

@@ -31,6 +31,8 @@ type BackupConfig struct {
 	MaxFailedTriesCount int  `json:"maxFailedTriesCount" gorm:"column:max_failed_tries_count;type:int;not null"`
 
 	CpuCount int `json:"cpuCount" gorm:"type:int;not null"`
+
+	Encryption BackupEncryption `json:"encryption" gorm:"column:encryption;type:text;not null;default:'NONE'"`
 }
 
 func (h *BackupConfig) TableName() string {
@@ -88,6 +90,11 @@ func (b *BackupConfig) Validate() error {
 		return errors.New("max failed tries count must be greater than 0")
 	}
 
+	if b.Encryption != "" && b.Encryption != BackupEncryptionNone &&
+		b.Encryption != BackupEncryptionEncrypted {
+		return errors.New("encryption must be NONE or ENCRYPTED")
+	}
+
 	return nil
 }
 
@@ -103,5 +110,6 @@ func (b *BackupConfig) Copy(newDatabaseID uuid.UUID) *BackupConfig {
 		IsRetryIfFailed:     b.IsRetryIfFailed,
 		MaxFailedTriesCount: b.MaxFailedTriesCount,
 		CpuCount:            b.CpuCount,
+		Encryption:          b.Encryption,
 	}
 }

backend/internal/features/backups/config/service.go

@@ -119,7 +119,6 @@ func (s *BackupConfigService) GetBackupConfigByDbId(
 
 func (s *BackupConfigService) IsStorageUsing(
 	user *users_models.User,
-	workspaceID uuid.UUID,
 	storageID uuid.UUID,
 ) (bool, error) {
 	_, err := s.storageService.GetStorage(user, storageID)
@@ -172,6 +171,7 @@ func (s *BackupConfigService) initializeDefaultConfig(
 		CpuCount:            1,
 		IsRetryIfFailed:     true,
 		MaxFailedTriesCount: 3,
+		Encryption:          BackupEncryptionNone,
 	})
 
 	return err

backend/internal/features/databases/controller.go

@@ -271,7 +271,6 @@ func (c *DatabaseController) TestDatabaseConnectionDirect(ctx *gin.Context) {
 // @Tags databases
 // @Produce json
 // @Param id path string true "Notifier ID"
-// @Param workspace_id query string true "Workspace ID"
 // @Success 200 {object} map[string]bool
 // @Failure 400
 // @Failure 401
@@ -290,19 +289,7 @@ func (c *DatabaseController) IsNotifierUsing(ctx *gin.Context) {
 		return
 	}
 
-	workspaceIDStr := ctx.Query("workspace_id")
-	if workspaceIDStr == "" {
-		ctx.JSON(http.StatusBadRequest, gin.H{"error": "workspace_id query parameter is required"})
-		return
-	}
-
-	workspaceID, err := uuid.Parse(workspaceIDStr)
-	if err != nil {
-		ctx.JSON(http.StatusBadRequest, gin.H{"error": "invalid workspace_id"})
-		return
-	}
-
-	isUsing, err := c.databaseService.IsNotifierUsing(user, workspaceID, id)
+	isUsing, err := c.databaseService.IsNotifierUsing(user, id)
 	if err != nil {
 		ctx.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return

backend/internal/features/databases/controller_test.go

@@ -16,6 +16,7 @@ import (
 	users_testing "postgresus-backend/internal/features/users/testing"
 	workspaces_controllers "postgresus-backend/internal/features/workspaces/controllers"
 	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	"postgresus-backend/internal/util/encryption"
 	test_utils "postgresus-backend/internal/util/testing"
 	"postgresus-backend/internal/util/tools"
 )
@@ -769,6 +770,71 @@ func createTestDatabaseViaAPI(
 	return &database
 }
 
+func Test_CreateDatabase_PasswordIsEncryptedInDB(t *testing.T) {
+	router := createTestRouter()
+	owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
+	workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
+
+	testDbName := "test_db"
+	plainPassword := "my-super-secret-password-123"
+	request := Database{
+		Name:        "Test Database",
+		WorkspaceID: &workspace.ID,
+		Type:        DatabaseTypePostgres,
+		Postgresql: &postgresql.PostgresqlDatabase{
+			Version:  tools.PostgresqlVersion16,
+			Host:     "localhost",
+			Port:     5432,
+			Username: "postgres",
+			Password: plainPassword,
+			Database: &testDbName,
+		},
+	}
+
+	var createdDatabase Database
+	test_utils.MakePostRequestAndUnmarshal(
+		t,
+		router,
+		"/api/v1/databases/create",
+		"Bearer "+owner.Token,
+		request,
+		http.StatusCreated,
+		&createdDatabase,
+	)
+
+	repository := &DatabaseRepository{}
+	databaseFromDB, err := repository.FindByID(createdDatabase.ID)
+	assert.NoError(t, err)
+	assert.NotNil(t, databaseFromDB)
+	assert.NotNil(t, databaseFromDB.Postgresql)
+
+	assert.True(
+		t,
+		strings.HasPrefix(databaseFromDB.Postgresql.Password, "enc:"),
+		"Password should be encrypted in database with 'enc:' prefix, got: %s",
+		databaseFromDB.Postgresql.Password,
+	)
+
+	encryptor := encryption.GetFieldEncryptor()
+	decryptedPassword, err := encryptor.Decrypt(
+		databaseFromDB.ID,
+		databaseFromDB.Postgresql.Password,
+	)
+	assert.NoError(t, err)
+	assert.Equal(t, plainPassword, decryptedPassword,
+		"Decrypted password should match original plaintext password")
+
+	test_utils.MakeDeleteRequest(
+		t,
+		router,
+		"/api/v1/databases/"+createdDatabase.ID.String(),
+		"Bearer "+owner.Token,
+		http.StatusNoContent,
+	)
+
+	workspaces_testing.RemoveTestWorkspace(workspace, router)
+}
+
 func Test_DatabaseSensitiveDataLifecycle_AllTypes(t *testing.T) {
 	testCases := []struct {
 		name                string
@@ -815,7 +881,15 @@ func Test_DatabaseSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, database *Database) {
-				assert.Equal(t, "original-password-secret", database.Postgresql.Password)
+				// Verify password is encrypted
+				assert.True(t, strings.HasPrefix(database.Postgresql.Password, "enc:"),
+					"Password should be encrypted in database")
+
+				// Verify it can be decrypted back to original
+				encryptor := encryption.GetFieldEncryptor()
+				decrypted, err := encryptor.Decrypt(database.ID, database.Postgresql.Password)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-password-secret", decrypted)
 			},
 			verifyHiddenData: func(t *testing.T, database *Database) {
 				assert.Equal(t, "", database.Postgresql.Password)

backend/internal/features/databases/databases/postgresql/model.go

@@ -5,9 +5,9 @@ import (
 	"errors"
 	"fmt"
 	"log/slog"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/tools"
 	"regexp"
-	"slices"
 	"time"
 
 	"github.com/google/uuid"
@@ -59,14 +59,22 @@ func (p *PostgresqlDatabase) Validate() error {
 	return nil
 }
 
-func (p *PostgresqlDatabase) TestConnection(logger *slog.Logger) error {
+func (p *PostgresqlDatabase) TestConnection(
+	logger *slog.Logger,
+	encryptor encryption.FieldEncryptor,
+	databaseID uuid.UUID,
+) error {
 	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
 	defer cancel()
 
-	return testSingleDatabaseConnection(logger, ctx, p)
+	return testSingleDatabaseConnection(logger, ctx, p, encryptor, databaseID)
 }
 
 func (p *PostgresqlDatabase) HideSensitiveData() {
+	if p == nil {
+		return
+	}
+
 	p.Password = ""
 }
 
@@ -83,19 +91,42 @@ func (p *PostgresqlDatabase) Update(incoming *PostgresqlDatabase) {
 	}
 }
 
+func (p *PostgresqlDatabase) EncryptSensitiveFields(
+	databaseID uuid.UUID,
+	encryptor encryption.FieldEncryptor,
+) error {
+	if p.Password != "" {
+		encrypted, err := encryptor.Encrypt(databaseID, p.Password)
+		if err != nil {
+			return err
+		}
+		p.Password = encrypted
+	}
+
+	return nil
+}
+
 // testSingleDatabaseConnection tests connection to a specific database for pg_dump
 func testSingleDatabaseConnection(
 	logger *slog.Logger,
 	ctx context.Context,
 	postgresDb *PostgresqlDatabase,
+	encryptor encryption.FieldEncryptor,
+	databaseID uuid.UUID,
 ) error {
 	// For single database backup, we need to connect to the specific database
 	if postgresDb.Database == nil || *postgresDb.Database == "" {
 		return errors.New("database name is required for single database backup (pg_dump)")
 	}
 
+	// Decrypt password if needed
+	password, err := decryptPasswordIfNeeded(postgresDb.Password, encryptor, databaseID)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt password: %w", err)
+	}
+
 	// Build connection string for the specific database
-	connStr := buildConnectionStringForDB(postgresDb, *postgresDb.Database)
+	connStr := buildConnectionStringForDB(postgresDb, *postgresDb.Database, password)
 
 	// Test connection
 	conn, err := pgx.Connect(ctx, connStr)
@@ -178,7 +209,7 @@ func testBasicOperations(ctx context.Context, conn *pgx.Conn, dbName string) err
 }
 
 // buildConnectionStringForDB builds connection string for specific database
-func buildConnectionStringForDB(p *PostgresqlDatabase, dbName string) string {
+func buildConnectionStringForDB(p *PostgresqlDatabase, dbName string, password string) string {
 	sslMode := "disable"
 	if p.IsHttps {
 		sslMode = "require"
@@ -188,106 +219,19 @@ func buildConnectionStringForDB(p *PostgresqlDatabase, dbName string) string {
 		p.Host,
 		p.Port,
 		p.Username,
-		p.Password,
+		password,
 		dbName,
 		sslMode,
 	)
 }
 
-func (p *PostgresqlDatabase) InstallExtensions(extensions []tools.PostgresqlExtension) error {
-	if len(extensions) == 0 {
-		return nil
+func decryptPasswordIfNeeded(
+	password string,
+	encryptor encryption.FieldEncryptor,
+	databaseID uuid.UUID,
+) (string, error) {
+	if encryptor == nil {
+		return password, nil
 	}
-
-	if p.Database == nil || *p.Database == "" {
-		return errors.New("database name is required for installing extensions")
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-
-	// Build connection string for the specific database
-	connStr := buildConnectionStringForDB(p, *p.Database)
-
-	// Connect to database
-	conn, err := pgx.Connect(ctx, connStr)
-	if err != nil {
-		return fmt.Errorf("failed to connect to database '%s': %w", *p.Database, err)
-	}
-	defer func() {
-		if closeErr := conn.Close(ctx); closeErr != nil {
-			fmt.Println("failed to close connection: %w", closeErr)
-		}
-	}()
-
-	// Check which extensions are already installed
-	installedExtensions, err := p.getInstalledExtensions(ctx, conn)
-	if err != nil {
-		return fmt.Errorf("failed to check installed extensions: %w", err)
-	}
-
-	// Install missing extensions
-	for _, extension := range extensions {
-		if contains(installedExtensions, string(extension)) {
-			continue // Extension already installed
-		}
-
-		if err := p.installExtension(ctx, conn, string(extension)); err != nil {
-			return fmt.Errorf("failed to install extension '%s': %w", extension, err)
-		}
-	}
-
-	return nil
-}
-
-// getInstalledExtensions queries the database for currently installed extensions
-func (p *PostgresqlDatabase) getInstalledExtensions(
-	ctx context.Context,
-	conn *pgx.Conn,
-) ([]string, error) {
-	query := "SELECT extname FROM pg_extension"
-
-	rows, err := conn.Query(ctx, query)
-	if err != nil {
-		return nil, fmt.Errorf("failed to query installed extensions: %w", err)
-	}
-	defer rows.Close()
-
-	var extensions []string
-	for rows.Next() {
-		var extname string
-
-		if err := rows.Scan(&extname); err != nil {
-			return nil, fmt.Errorf("failed to scan extension name: %w", err)
-		}
-
-		extensions = append(extensions, extname)
-	}
-
-	if err := rows.Err(); err != nil {
-		return nil, fmt.Errorf("error iterating over extension rows: %w", err)
-	}
-
-	return extensions, nil
-}
-
-// installExtension installs a single PostgreSQL extension
-func (p *PostgresqlDatabase) installExtension(
-	ctx context.Context,
-	conn *pgx.Conn,
-	extensionName string,
-) error {
-	query := fmt.Sprintf("CREATE EXTENSION IF NOT EXISTS %s", extensionName)
-
-	_, err := conn.Exec(ctx, query)
-	if err != nil {
-		return fmt.Errorf("failed to execute CREATE EXTENSION: %w", err)
-	}
-
-	return nil
-}
-
-// contains checks if a string slice contains a specific string
-func contains(slice []string, item string) bool {
-	return slices.Contains(slice, item)
+	return encryptor.Decrypt(databaseID, password)
 }

backend/internal/features/databases/di.go

@@ -5,6 +5,7 @@ import (
 	"postgresus-backend/internal/features/notifiers"
 	users_services "postgresus-backend/internal/features/users/services"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 )
 
@@ -19,6 +20,7 @@ var databaseService = &DatabaseService{
 	[]DatabaseCopyListener{},
 	workspaces_services.GetWorkspaceService(),
 	audit_logs.GetAuditLogService(),
+	encryption.GetFieldEncryptor(),
 }
 
 var databaseController = &DatabaseController{

backend/internal/features/databases/interfaces.go

@@ -2,6 +2,7 @@ package databases
 
 import (
 	"log/slog"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -11,7 +12,11 @@ type DatabaseValidator interface {
 }
 
 type DatabaseConnector interface {
-	TestConnection(logger *slog.Logger) error
+	TestConnection(
+		logger *slog.Logger,
+		encryptor encryption.FieldEncryptor,
+		databaseID uuid.UUID,
+	) error
 
 	HideSensitiveData()
 }

backend/internal/features/databases/model.go

@@ -5,6 +5,7 @@ import (
 	"log/slog"
 	"postgresus-backend/internal/features/databases/databases/postgresql"
 	"postgresus-backend/internal/features/notifiers"
+	"postgresus-backend/internal/util/encryption"
 	"time"
 
 	"github.com/google/uuid"
@@ -56,17 +57,28 @@ func (d *Database) ValidateUpdate(old, new Database) error {
 	return nil
 }
 
-func (d *Database) TestConnection(logger *slog.Logger) error {
-	return d.getSpecificDatabase().TestConnection(logger)
+func (d *Database) TestConnection(
+	logger *slog.Logger,
+	encryptor encryption.FieldEncryptor,
+) error {
+	return d.getSpecificDatabase().TestConnection(logger, encryptor, d.ID)
 }
 
 func (d *Database) HideSensitiveData() {
 	d.getSpecificDatabase().HideSensitiveData()
 }
 
+func (d *Database) EncryptSensitiveFields(encryptor encryption.FieldEncryptor) error {
+	if d.Postgresql != nil {
+		return d.Postgresql.EncryptSensitiveFields(d.ID, encryptor)
+	}
+	return nil
+}
+
 func (d *Database) Update(incoming *Database) {
 	d.Name = incoming.Name
 	d.Type = incoming.Type
+	d.Notifiers = incoming.Notifiers
 
 	switch d.Type {
 	case DatabaseTypePostgres:

backend/internal/features/databases/service.go

@@ -11,6 +11,7 @@ import (
 	"postgresus-backend/internal/features/notifiers"
 	users_models "postgresus-backend/internal/features/users/models"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -26,6 +27,7 @@ type DatabaseService struct {
 
 	workspaceService *workspaces_services.WorkspaceService
 	auditLogService  *audit_logs.AuditLogService
+	fieldEncryptor   encryption.FieldEncryptor
 }
 
 func (s *DatabaseService) AddDbCreationListener(
@@ -65,6 +67,10 @@ func (s *DatabaseService) CreateDatabase(
 		return nil, err
 	}
 
+	if err := database.EncryptSensitiveFields(s.fieldEncryptor); err != nil {
+		return nil, fmt.Errorf("failed to encrypt sensitive fields: %w", err)
+	}
+
 	database, err = s.dbRepository.Save(database)
 	if err != nil {
 		return nil, err
@@ -118,6 +124,10 @@ func (s *DatabaseService) UpdateDatabase(
 		return err
 	}
 
+	if err := existingDatabase.EncryptSensitiveFields(s.fieldEncryptor); err != nil {
+		return fmt.Errorf("failed to encrypt sensitive fields: %w", err)
+	}
+
 	_, err = s.dbRepository.Save(existingDatabase)
 	if err != nil {
 		return err
@@ -219,7 +229,6 @@ func (s *DatabaseService) GetDatabasesByWorkspace(
 
 func (s *DatabaseService) IsNotifierUsing(
 	user *users_models.User,
-	workspaceID uuid.UUID,
 	notifierID uuid.UUID,
 ) (bool, error) {
 	_, err := s.notifierService.GetNotifier(user, notifierID)
@@ -251,7 +260,7 @@ func (s *DatabaseService) TestDatabaseConnection(
 		return errors.New("insufficient permissions to test connection for this database")
 	}
 
-	err = database.TestConnection(s.logger)
+	err = database.TestConnection(s.logger, s.fieldEncryptor)
 	if err != nil {
 		lastSaveError := err.Error()
 		database.LastBackupErrorMessage = &lastSaveError
@@ -295,7 +304,7 @@ func (s *DatabaseService) TestDatabaseConnectionDirect(
 		usingDatabase = database
 	}
 
-	return usingDatabase.TestConnection(s.logger)
+	return usingDatabase.TestConnection(s.logger, s.fieldEncryptor)
 }
 
 func (s *DatabaseService) GetDatabaseByID(

backend/internal/features/notifiers/controller_test.go

@@ -453,70 +453,6 @@ func Test_CrossWorkspaceSecurity_CannotAccessNotifierFromAnotherWorkspace(t *tes
 	workspaces_testing.RemoveTestWorkspace(workspace2, router)
 }
 
-func createRouter() *gin.Engine {
-	gin.SetMode(gin.TestMode)
-	router := gin.New()
-
-	v1 := router.Group("/api/v1")
-	protected := v1.Group("").Use(users_middleware.AuthMiddleware(users_services.GetUserService()))
-
-	if routerGroup, ok := protected.(*gin.RouterGroup); ok {
-		GetNotifierController().RegisterRoutes(routerGroup)
-		workspaces_controllers.GetWorkspaceController().RegisterRoutes(routerGroup)
-		workspaces_controllers.GetMembershipController().RegisterRoutes(routerGroup)
-	}
-
-	audit_logs.SetupDependencies()
-
-	return router
-}
-
-func createNewNotifier(workspaceID uuid.UUID) *Notifier {
-	return &Notifier{
-		WorkspaceID:  workspaceID,
-		Name:         "Test Notifier " + uuid.New().String(),
-		NotifierType: NotifierTypeWebhook,
-		WebhookNotifier: &webhook_notifier.WebhookNotifier{
-			WebhookURL:    "https://webhook.site/test-" + uuid.New().String(),
-			WebhookMethod: webhook_notifier.WebhookMethodPOST,
-		},
-	}
-}
-
-func createTelegramNotifier(workspaceID uuid.UUID) *Notifier {
-	env := config.GetEnv()
-	return &Notifier{
-		WorkspaceID:  workspaceID,
-		Name:         "Test Telegram Notifier " + uuid.New().String(),
-		NotifierType: NotifierTypeTelegram,
-		TelegramNotifier: &telegram_notifier.TelegramNotifier{
-			BotToken:     env.TestTelegramBotToken,
-			TargetChatID: env.TestTelegramChatID,
-		},
-	}
-}
-
-func verifyNotifierData(t *testing.T, expected *Notifier, actual *Notifier) {
-	assert.Equal(t, expected.Name, actual.Name)
-	assert.Equal(t, expected.NotifierType, actual.NotifierType)
-	assert.Equal(t, expected.WorkspaceID, actual.WorkspaceID)
-}
-
-func deleteNotifier(
-	t *testing.T,
-	router *gin.Engine,
-	notifierID, workspaceID uuid.UUID,
-	token string,
-) {
-	test_utils.MakeDeleteRequest(
-		t,
-		router,
-		fmt.Sprintf("/api/v1/notifiers/%s", notifierID.String()),
-		"Bearer "+token,
-		http.StatusOK,
-	)
-}
-
 func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 	testCases := []struct {
 		name                string
@@ -553,7 +489,13 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, notifier *Notifier) {
-				assert.Equal(t, "original-bot-token-12345", notifier.TelegramNotifier.BotToken)
+				assert.True(
+					t,
+					isEncrypted(notifier.TelegramNotifier.BotToken),
+					"BotToken should be encrypted in DB",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.TelegramNotifier.BotToken)
+				assert.Equal(t, "original-bot-token-12345", decrypted)
 			},
 			verifyHiddenData: func(t *testing.T, notifier *Notifier) {
 				assert.Equal(t, "", notifier.TelegramNotifier.BotToken)
@@ -592,7 +534,13 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, notifier *Notifier) {
-				assert.Equal(t, "original-password-secret", notifier.EmailNotifier.SMTPPassword)
+				assert.True(
+					t,
+					isEncrypted(notifier.EmailNotifier.SMTPPassword),
+					"SMTPPassword should be encrypted in DB",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.EmailNotifier.SMTPPassword)
+				assert.Equal(t, "original-password-secret", decrypted)
 			},
 			verifyHiddenData: func(t *testing.T, notifier *Notifier) {
 				assert.Equal(t, "", notifier.EmailNotifier.SMTPPassword)
@@ -625,7 +573,13 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, notifier *Notifier) {
-				assert.Equal(t, "xoxb-original-slack-token", notifier.SlackNotifier.BotToken)
+				assert.True(
+					t,
+					isEncrypted(notifier.SlackNotifier.BotToken),
+					"BotToken should be encrypted in DB",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.SlackNotifier.BotToken)
+				assert.Equal(t, "xoxb-original-slack-token", decrypted)
 			},
 			verifyHiddenData: func(t *testing.T, notifier *Notifier) {
 				assert.Equal(t, "", notifier.SlackNotifier.BotToken)
@@ -656,11 +610,17 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, notifier *Notifier) {
-				assert.Equal(
+				assert.True(
 					t,
-					"https://discord.com/api/webhooks/123/original-token",
+					isEncrypted(notifier.DiscordNotifier.ChannelWebhookURL),
+					"WebhookURL should be encrypted in DB",
+				)
+				decrypted := decryptField(
+					t,
+					notifier.ID,
 					notifier.DiscordNotifier.ChannelWebhookURL,
 				)
+				assert.Equal(t, "https://discord.com/api/webhooks/123/original-token", decrypted)
 			},
 			verifyHiddenData: func(t *testing.T, notifier *Notifier) {
 				assert.Equal(t, "", notifier.DiscordNotifier.ChannelWebhookURL)
@@ -691,10 +651,16 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 				}
 			},
 			verifySensitiveData: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.TeamsNotifier.WebhookURL),
+					"WebhookURL should be encrypted in DB",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.TeamsNotifier.WebhookURL)
 				assert.Equal(
 					t,
 					"https://outlook.office.com/webhook/original-token",
-					notifier.TeamsNotifier.WebhookURL,
+					decrypted,
 				)
 			},
 			verifyHiddenData: func(t *testing.T, notifier *Notifier) {
@@ -813,3 +779,263 @@ func Test_NotifierSensitiveDataLifecycle_AllTypes(t *testing.T) {
 		})
 	}
 }
+
+func Test_CreateNotifier_AllSensitiveFieldsEncryptedInDB(t *testing.T) {
+	testCases := []struct {
+		name                      string
+		createNotifier            func(workspaceID uuid.UUID) *Notifier
+		verifySensitiveEncryption func(t *testing.T, notifier *Notifier)
+	}{
+		{
+			name: "Telegram Notifier - BotToken encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Telegram",
+					NotifierType: NotifierTypeTelegram,
+					TelegramNotifier: &telegram_notifier.TelegramNotifier{
+						BotToken:     "plain-telegram-token-123",
+						TargetChatID: "123456789",
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.TelegramNotifier.BotToken),
+					"BotToken should be encrypted",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.TelegramNotifier.BotToken)
+				assert.Equal(t, "plain-telegram-token-123", decrypted)
+			},
+		},
+		{
+			name: "Email Notifier - SMTPPassword encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Email",
+					NotifierType: NotifierTypeEmail,
+					EmailNotifier: &email_notifier.EmailNotifier{
+						TargetEmail:  "test@example.com",
+						SMTPHost:     "smtp.example.com",
+						SMTPPort:     587,
+						SMTPUser:     "user@example.com",
+						SMTPPassword: "plain-smtp-password-456",
+						From:         "noreply@example.com",
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.EmailNotifier.SMTPPassword),
+					"SMTPPassword should be encrypted",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.EmailNotifier.SMTPPassword)
+				assert.Equal(t, "plain-smtp-password-456", decrypted)
+			},
+		},
+		{
+			name: "Slack Notifier - BotToken encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Slack",
+					NotifierType: NotifierTypeSlack,
+					SlackNotifier: &slack_notifier.SlackNotifier{
+						BotToken:     "plain-slack-token-789",
+						TargetChatID: "C0123456789",
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.SlackNotifier.BotToken),
+					"BotToken should be encrypted",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.SlackNotifier.BotToken)
+				assert.Equal(t, "plain-slack-token-789", decrypted)
+			},
+		},
+		{
+			name: "Discord Notifier - WebhookURL encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Discord",
+					NotifierType: NotifierTypeDiscord,
+					DiscordNotifier: &discord_notifier.DiscordNotifier{
+						ChannelWebhookURL: "https://discord.com/api/webhooks/123/abc",
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.DiscordNotifier.ChannelWebhookURL),
+					"WebhookURL should be encrypted",
+				)
+				decrypted := decryptField(
+					t,
+					notifier.ID,
+					notifier.DiscordNotifier.ChannelWebhookURL,
+				)
+				assert.Equal(t, "https://discord.com/api/webhooks/123/abc", decrypted)
+			},
+		},
+		{
+			name: "Teams Notifier - WebhookURL encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Teams",
+					NotifierType: NotifierTypeTeams,
+					TeamsNotifier: &teams_notifier.TeamsNotifier{
+						WebhookURL: "https://outlook.office.com/webhook/test123",
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.TeamsNotifier.WebhookURL),
+					"WebhookURL should be encrypted",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.TeamsNotifier.WebhookURL)
+				assert.Equal(t, "https://outlook.office.com/webhook/test123", decrypted)
+			},
+		},
+		{
+			name: "Webhook Notifier - WebhookURL encrypted",
+			createNotifier: func(workspaceID uuid.UUID) *Notifier {
+				return &Notifier{
+					WorkspaceID:  workspaceID,
+					Name:         "Test Webhook",
+					NotifierType: NotifierTypeWebhook,
+					WebhookNotifier: &webhook_notifier.WebhookNotifier{
+						WebhookURL:    "https://webhook.example.com/test456",
+						WebhookMethod: webhook_notifier.WebhookMethodPOST,
+					},
+				}
+			},
+			verifySensitiveEncryption: func(t *testing.T, notifier *Notifier) {
+				assert.True(
+					t,
+					isEncrypted(notifier.WebhookNotifier.WebhookURL),
+					"WebhookURL should be encrypted",
+				)
+				decrypted := decryptField(t, notifier.ID, notifier.WebhookNotifier.WebhookURL)
+				assert.Equal(t, "https://webhook.example.com/test456", decrypted)
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
+			router := createRouter()
+			workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
+
+			// Create notifier via API (plaintext credentials)
+			var createdNotifier Notifier
+			test_utils.MakePostRequestAndUnmarshal(
+				t,
+				router,
+				"/api/v1/notifiers",
+				"Bearer "+owner.Token,
+				tc.createNotifier(workspace.ID),
+				http.StatusOK,
+				&createdNotifier,
+			)
+
+			// Read from DB directly (bypass service layer)
+			repository := &NotifierRepository{}
+			notifierFromDB, err := repository.FindByID(createdNotifier.ID)
+			assert.NoError(t, err)
+
+			// Verify encryption
+			tc.verifySensitiveEncryption(t, notifierFromDB)
+
+			// Cleanup
+			deleteNotifier(t, router, createdNotifier.ID, workspace.ID, owner.Token)
+			workspaces_testing.RemoveTestWorkspace(workspace, router)
+		})
+	}
+}
+
+func createRouter() *gin.Engine {
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+
+	v1 := router.Group("/api/v1")
+	protected := v1.Group("").Use(users_middleware.AuthMiddleware(users_services.GetUserService()))
+
+	if routerGroup, ok := protected.(*gin.RouterGroup); ok {
+		GetNotifierController().RegisterRoutes(routerGroup)
+		workspaces_controllers.GetWorkspaceController().RegisterRoutes(routerGroup)
+		workspaces_controllers.GetMembershipController().RegisterRoutes(routerGroup)
+	}
+
+	audit_logs.SetupDependencies()
+
+	return router
+}
+
+func createNewNotifier(workspaceID uuid.UUID) *Notifier {
+	return &Notifier{
+		WorkspaceID:  workspaceID,
+		Name:         "Test Notifier " + uuid.New().String(),
+		NotifierType: NotifierTypeWebhook,
+		WebhookNotifier: &webhook_notifier.WebhookNotifier{
+			WebhookURL:    "https://webhook.site/test-" + uuid.New().String(),
+			WebhookMethod: webhook_notifier.WebhookMethodPOST,
+		},
+	}
+}
+
+func createTelegramNotifier(workspaceID uuid.UUID) *Notifier {
+	env := config.GetEnv()
+	return &Notifier{
+		WorkspaceID:  workspaceID,
+		Name:         "Test Telegram Notifier " + uuid.New().String(),
+		NotifierType: NotifierTypeTelegram,
+		TelegramNotifier: &telegram_notifier.TelegramNotifier{
+			BotToken:     env.TestTelegramBotToken,
+			TargetChatID: env.TestTelegramChatID,
+		},
+	}
+}
+
+func verifyNotifierData(t *testing.T, expected *Notifier, actual *Notifier) {
+	assert.Equal(t, expected.Name, actual.Name)
+	assert.Equal(t, expected.NotifierType, actual.NotifierType)
+	assert.Equal(t, expected.WorkspaceID, actual.WorkspaceID)
+}
+
+func deleteNotifier(
+	t *testing.T,
+	router *gin.Engine,
+	notifierID, workspaceID uuid.UUID,
+	token string,
+) {
+	test_utils.MakeDeleteRequest(
+		t,
+		router,
+		fmt.Sprintf("/api/v1/notifiers/%s", notifierID.String()),
+		"Bearer "+token,
+		http.StatusOK,
+	)
+}
+
+func isEncrypted(value string) bool {
+	return len(value) > 4 && value[:4] == "enc:"
+}
+
+func decryptField(t *testing.T, notifierID uuid.UUID, encryptedValue string) string {
+	encryptor := GetNotifierService().fieldEncryptor
+	decrypted, err := encryptor.Decrypt(notifierID, encryptedValue)
+	assert.NoError(t, err)
+	return decrypted
+}

backend/internal/features/notifiers/di.go

@@ -3,6 +3,7 @@ package notifiers
 import (
 	audit_logs "postgresus-backend/internal/features/audit_logs"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 )
 
@@ -12,6 +13,7 @@ var notifierService = &NotifierService{
 	logger.GetLogger(),
 	workspaces_services.GetWorkspaceService(),
 	audit_logs.GetAuditLogService(),
+	encryption.GetFieldEncryptor(),
 }
 var notifierController = &NotifierController{
 	notifierService,
@@ -26,6 +28,9 @@ func GetNotifierService() *NotifierService {
 	return notifierService
 }
 
+func GetNotifierRepository() *NotifierRepository {
+	return notifierRepository
+}
 func SetupDependencies() {
 	workspaces_services.GetWorkspaceService().AddWorkspaceDeletionListener(notifierService)
 }

backend/internal/features/notifiers/interfaces.go

@@ -1,11 +1,21 @@
 package notifiers
 
-import "log/slog"
+import (
+	"log/slog"
+	"postgresus-backend/internal/util/encryption"
+)
 
 type NotificationSender interface {
-	Send(logger *slog.Logger, heading string, message string) error
+	Send(
+		encryptor encryption.FieldEncryptor,
+		logger *slog.Logger,
+		heading string,
+		message string,
+	) error
 
-	Validate() error
+	Validate(encryptor encryption.FieldEncryptor) error
 
 	HideSensitiveData()
+
+	EncryptSensitiveData(encryptor encryption.FieldEncryptor) error
 }

backend/internal/features/notifiers/model.go

@@ -9,6 +9,7 @@ import (
 	teams_notifier "postgresus-backend/internal/features/notifiers/models/teams"
 	telegram_notifier "postgresus-backend/internal/features/notifiers/models/telegram"
 	webhook_notifier "postgresus-backend/internal/features/notifiers/models/webhook"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -33,16 +34,21 @@ func (n *Notifier) TableName() string {
 	return "notifiers"
 }
 
-func (n *Notifier) Validate() error {
+func (n *Notifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if n.Name == "" {
 		return errors.New("name is required")
 	}
 
-	return n.getSpecificNotifier().Validate()
+	return n.getSpecificNotifier().Validate(encryptor)
 }
 
-func (n *Notifier) Send(logger *slog.Logger, heading string, message string) error {
-	err := n.getSpecificNotifier().Send(logger, heading, message)
+func (n *Notifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading string,
+	message string,
+) error {
+	err := n.getSpecificNotifier().Send(encryptor, logger, heading, message)
 
 	if err != nil {
 		lastSendError := err.Error()
@@ -58,6 +64,10 @@ func (n *Notifier) HideSensitiveData() {
 	n.getSpecificNotifier().HideSensitiveData()
 }
 
+func (n *Notifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	return n.getSpecificNotifier().EncryptSensitiveData(encryptor)
+}
+
 func (n *Notifier) Update(incoming *Notifier) {
 	n.Name = incoming.Name
 	n.NotifierType = incoming.NotifierType

backend/internal/features/notifiers/models/discord/model.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"log/slog"
 	"net/http"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -21,7 +22,7 @@ func (d *DiscordNotifier) TableName() string {
 	return "discord_notifiers"
 }
 
-func (d *DiscordNotifier) Validate() error {
+func (d *DiscordNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if d.ChannelWebhookURL == "" {
 		return errors.New("webhook URL is required")
 	}
@@ -29,7 +30,17 @@ func (d *DiscordNotifier) Validate() error {
 	return nil
 }
 
-func (d *DiscordNotifier) Send(logger *slog.Logger, heading string, message string) error {
+func (d *DiscordNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading string,
+	message string,
+) error {
+	webhookURL, err := encryptor.Decrypt(d.NotifierID, d.ChannelWebhookURL)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt webhook URL: %w", err)
+	}
+
 	fullMessage := heading
 	if message != "" {
 		fullMessage = fmt.Sprintf("%s\n\n%s", heading, message)
@@ -44,7 +55,7 @@ func (d *DiscordNotifier) Send(logger *slog.Logger, heading string, message stri
 		return fmt.Errorf("failed to marshal Discord payload: %w", err)
 	}
 
-	req, err := http.NewRequest("POST", d.ChannelWebhookURL, bytes.NewReader(jsonPayload))
+	req, err := http.NewRequest("POST", webhookURL, bytes.NewReader(jsonPayload))
 	if err != nil {
 		return fmt.Errorf("failed to create request: %w", err)
 	}
@@ -81,3 +92,14 @@ func (d *DiscordNotifier) Update(incoming *DiscordNotifier) {
 		d.ChannelWebhookURL = incoming.ChannelWebhookURL
 	}
 }
+
+func (d *DiscordNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if d.ChannelWebhookURL != "" {
+		encrypted, err := encryptor.Encrypt(d.NotifierID, d.ChannelWebhookURL)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt webhook URL: %w", err)
+		}
+		d.ChannelWebhookURL = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/models/email_notifier/model.go

@@ -7,6 +7,7 @@ import (
 	"log/slog"
 	"net"
 	"net/smtp"
+	"postgresus-backend/internal/util/encryption"
 	"time"
 
 	"github.com/google/uuid"
@@ -27,13 +28,14 @@ type EmailNotifier struct {
 	SMTPPort     int       `json:"smtpPort"     gorm:"not null;column:smtp_port"`
 	SMTPUser     string    `json:"smtpUser"     gorm:"type:varchar(255);column:smtp_user"`
 	SMTPPassword string    `json:"smtpPassword" gorm:"type:varchar(255);column:smtp_password"`
+	From         string    `json:"from"         gorm:"type:varchar(255);column:from_email"`
 }
 
 func (e *EmailNotifier) TableName() string {
 	return "email_notifiers"
 }
 
-func (e *EmailNotifier) Validate() error {
+func (e *EmailNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if e.TargetEmail == "" {
 		return errors.New("target email is required")
 	}
@@ -54,11 +56,29 @@ func (e *EmailNotifier) Validate() error {
 	return nil
 }
 
-func (e *EmailNotifier) Send(logger *slog.Logger, heading string, message string) error {
+func (e *EmailNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading string,
+	message string,
+) error {
+	// Decrypt SMTP password if provided
+	var smtpPassword string
+	if e.SMTPPassword != "" {
+		decrypted, err := encryptor.Decrypt(e.NotifierID, e.SMTPPassword)
+		if err != nil {
+			return fmt.Errorf("failed to decrypt SMTP password: %w", err)
+		}
+		smtpPassword = decrypted
+	}
+
 	// Compose email
-	from := e.SMTPUser
+	from := e.From
 	if from == "" {
-		from = "noreply@" + e.SMTPHost
+		from = e.SMTPUser
+		if from == "" {
+			from = "noreply@" + e.SMTPHost
+		}
 	}
 
 	to := []string{e.TargetEmail}
@@ -72,15 +92,16 @@ func (e *EmailNotifier) Send(logger *slog.Logger, heading string, message string
 	)
 	body := message
 	fromHeader := fmt.Sprintf("From: %s\r\n", from)
+	toHeader := fmt.Sprintf("To: %s\r\n", e.TargetEmail)
 
 	// Combine all parts of the email
-	emailContent := []byte(fromHeader + subject + mime + body)
+	emailContent := []byte(fromHeader + toHeader + subject + mime + body)
 
 	addr := net.JoinHostPort(e.SMTPHost, fmt.Sprintf("%d", e.SMTPPort))
 	timeout := DefaultTimeout
 
 	// Determine if authentication is required
-	isAuthRequired := e.SMTPUser != "" && e.SMTPPassword != ""
+	isAuthRequired := e.SMTPUser != "" && smtpPassword != ""
 
 	// Handle different port scenarios
 	if e.SMTPPort == ImplicitTLSPort {
@@ -111,7 +132,7 @@ func (e *EmailNotifier) Send(logger *slog.Logger, heading string, message string
 
 		// Set up authentication only if credentials are provided
 		if isAuthRequired {
-			auth := smtp.PlainAuth("", e.SMTPUser, e.SMTPPassword, e.SMTPHost)
+			auth := smtp.PlainAuth("", e.SMTPUser, smtpPassword, e.SMTPHost)
 			if err := client.Auth(auth); err != nil {
 				return fmt.Errorf("SMTP authentication failed: %w", err)
 			}
@@ -174,7 +195,7 @@ func (e *EmailNotifier) Send(logger *slog.Logger, heading string, message string
 
 		// Authenticate only if credentials are provided
 		if isAuthRequired {
-			auth := smtp.PlainAuth("", e.SMTPUser, e.SMTPPassword, e.SMTPHost)
+			auth := smtp.PlainAuth("", e.SMTPUser, smtpPassword, e.SMTPHost)
 			if err := client.Auth(auth); err != nil {
 				return fmt.Errorf("SMTP authentication failed: %w", err)
 			}
@@ -218,8 +239,20 @@ func (e *EmailNotifier) Update(incoming *EmailNotifier) {
 	e.SMTPHost = incoming.SMTPHost
 	e.SMTPPort = incoming.SMTPPort
 	e.SMTPUser = incoming.SMTPUser
+	e.From = incoming.From
 
 	if incoming.SMTPPassword != "" {
 		e.SMTPPassword = incoming.SMTPPassword
 	}
 }
+
+func (e *EmailNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if e.SMTPPassword != "" {
+		encrypted, err := encryptor.Encrypt(e.NotifierID, e.SMTPPassword)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt SMTP password: %w", err)
+		}
+		e.SMTPPassword = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/models/slack/model.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"log/slog"
 	"net/http"
+	"postgresus-backend/internal/util/encryption"
 	"strconv"
 	"strings"
 	"time"
@@ -23,7 +24,7 @@ type SlackNotifier struct {
 
 func (s *SlackNotifier) TableName() string { return "slack_notifiers" }
 
-func (s *SlackNotifier) Validate() error {
+func (s *SlackNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if s.BotToken == "" {
 		return errors.New("bot token is required")
 	}
@@ -43,7 +44,16 @@ func (s *SlackNotifier) Validate() error {
 	return nil
 }
 
-func (s *SlackNotifier) Send(logger *slog.Logger, heading, message string) error {
+func (s *SlackNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading, message string,
+) error {
+	botToken, err := encryptor.Decrypt(s.NotifierID, s.BotToken)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt bot token: %w", err)
+	}
+
 	full := fmt.Sprintf("*%s*", heading)
 
 	if message != "" {
@@ -80,7 +90,7 @@ func (s *SlackNotifier) Send(logger *slog.Logger, heading, message string) error
 		}
 
 		req.Header.Set("Content-Type", "application/json; charset=utf-8")
-		req.Header.Set("Authorization", "Bearer "+s.BotToken)
+		req.Header.Set("Authorization", "Bearer "+botToken)
 
 		resp, err := http.DefaultClient.Do(req)
 		if err != nil {
@@ -144,3 +154,14 @@ func (s *SlackNotifier) Update(incoming *SlackNotifier) {
 		s.BotToken = incoming.BotToken
 	}
 }
+
+func (s *SlackNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if s.BotToken != "" {
+		encrypted, err := encryptor.Encrypt(s.NotifierID, s.BotToken)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt bot token: %w", err)
+		}
+		s.BotToken = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/models/teams/model.go

@@ -8,6 +8,7 @@ import (
 	"log/slog"
 	"net/http"
 	"net/url"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -21,11 +22,17 @@ func (TeamsNotifier) TableName() string {
 	return "teams_notifiers"
 }
 
-func (n *TeamsNotifier) Validate() error {
+func (n *TeamsNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if n.WebhookURL == "" {
 		return errors.New("webhook_url is required")
 	}
-	u, err := url.Parse(n.WebhookURL)
+
+	webhookURL, err := encryptor.Decrypt(n.NotifierID, n.WebhookURL)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt webhook URL: %w", err)
+	}
+
+	u, err := url.Parse(webhookURL)
 	if err != nil || (u.Scheme != "http" && u.Scheme != "https") {
 		return errors.New("invalid webhook_url")
 	}
@@ -33,8 +40,8 @@ func (n *TeamsNotifier) Validate() error {
 }
 
 type cardAttachment struct {
-	ContentType string      `json:"contentType"`
-	Content     interface{} `json:"content"`
+	ContentType string `json:"contentType"`
+	Content     any    `json:"content"`
 }
 
 type payload struct {
@@ -43,11 +50,20 @@ type payload struct {
 	Attachments []cardAttachment `json:"attachments,omitempty"`
 }
 
-func (n *TeamsNotifier) Send(logger *slog.Logger, heading, message string) error {
-	if err := n.Validate(); err != nil {
+func (n *TeamsNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading, message string,
+) error {
+	if err := n.Validate(encryptor); err != nil {
 		return err
 	}
 
+	webhookURL, err := encryptor.Decrypt(n.NotifierID, n.WebhookURL)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt webhook URL: %w", err)
+	}
+
 	card := map[string]any{
 		"type":    "AdaptiveCard",
 		"version": "1.4",
@@ -71,7 +87,7 @@ func (n *TeamsNotifier) Send(logger *slog.Logger, heading, message string) error
 	}
 
 	body, _ := json.Marshal(p)
-	req, err := http.NewRequest(http.MethodPost, n.WebhookURL, bytes.NewReader(body))
+	req, err := http.NewRequest(http.MethodPost, webhookURL, bytes.NewReader(body))
 	if err != nil {
 		return err
 	}
@@ -104,3 +120,14 @@ func (n *TeamsNotifier) Update(incoming *TeamsNotifier) {
 		n.WebhookURL = incoming.WebhookURL
 	}
 }
+
+func (n *TeamsNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if n.WebhookURL != "" {
+		encrypted, err := encryptor.Encrypt(n.NotifierID, n.WebhookURL)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt webhook URL: %w", err)
+		}
+		n.WebhookURL = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/models/telegram/model.go

@@ -7,6 +7,7 @@ import (
 	"log/slog"
 	"net/http"
 	"net/url"
+	"postgresus-backend/internal/util/encryption"
 	"strconv"
 	"strings"
 
@@ -24,7 +25,7 @@ func (t *TelegramNotifier) TableName() string {
 	return "telegram_notifiers"
 }
 
-func (t *TelegramNotifier) Validate() error {
+func (t *TelegramNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if t.BotToken == "" {
 		return errors.New("bot token is required")
 	}
@@ -36,13 +37,23 @@ func (t *TelegramNotifier) Validate() error {
 	return nil
 }
 
-func (t *TelegramNotifier) Send(logger *slog.Logger, heading string, message string) error {
+func (t *TelegramNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading string,
+	message string,
+) error {
+	botToken, err := encryptor.Decrypt(t.NotifierID, t.BotToken)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt bot token: %w", err)
+	}
+
 	fullMessage := heading
 	if message != "" {
 		fullMessage = fmt.Sprintf("%s\n\n%s", heading, message)
 	}
 
-	apiURL := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", t.BotToken)
+	apiURL := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", botToken)
 
 	data := url.Values{}
 	data.Set("chat_id", t.TargetChatID)
@@ -93,3 +104,14 @@ func (t *TelegramNotifier) Update(incoming *TelegramNotifier) {
 		t.BotToken = incoming.BotToken
 	}
 }
+
+func (t *TelegramNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if t.BotToken != "" {
+		encrypted, err := encryptor.Encrypt(t.NotifierID, t.BotToken)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt bot token: %w", err)
+		}
+		t.BotToken = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/models/webhook/model.go

@@ -9,6 +9,7 @@ import (
 	"log/slog"
 	"net/http"
 	"net/url"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -23,7 +24,7 @@ func (t *WebhookNotifier) TableName() string {
 	return "webhook_notifiers"
 }
 
-func (t *WebhookNotifier) Validate() error {
+func (t *WebhookNotifier) Validate(encryptor encryption.FieldEncryptor) error {
 	if t.WebhookURL == "" {
 		return errors.New("webhook URL is required")
 	}
@@ -35,11 +36,21 @@ func (t *WebhookNotifier) Validate() error {
 	return nil
 }
 
-func (t *WebhookNotifier) Send(logger *slog.Logger, heading string, message string) error {
+func (t *WebhookNotifier) Send(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	heading string,
+	message string,
+) error {
+	webhookURL, err := encryptor.Decrypt(t.NotifierID, t.WebhookURL)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt webhook URL: %w", err)
+	}
+
 	switch t.WebhookMethod {
 	case WebhookMethodGET:
 		reqURL := fmt.Sprintf("%s?heading=%s&message=%s",
-			t.WebhookURL,
+			webhookURL,
 			url.QueryEscape(heading),
 			url.QueryEscape(message),
 		)
@@ -76,7 +87,7 @@ func (t *WebhookNotifier) Send(logger *slog.Logger, heading string, message stri
 			return fmt.Errorf("failed to marshal webhook payload: %w", err)
 		}
 
-		resp, err := http.Post(t.WebhookURL, "application/json", bytes.NewReader(body))
+		resp, err := http.Post(webhookURL, "application/json", bytes.NewReader(body))
 		if err != nil {
 			return fmt.Errorf("failed to send POST webhook: %w", err)
 		}
@@ -110,3 +121,14 @@ func (t *WebhookNotifier) Update(incoming *WebhookNotifier) {
 	t.WebhookURL = incoming.WebhookURL
 	t.WebhookMethod = incoming.WebhookMethod
 }
+
+func (t *WebhookNotifier) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if t.WebhookURL != "" {
+		encrypted, err := encryptor.Encrypt(t.NotifierID, t.WebhookURL)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt webhook URL: %w", err)
+		}
+		t.WebhookURL = encrypted
+	}
+	return nil
+}

backend/internal/features/notifiers/repository.go

@@ -165,7 +165,6 @@ func (r *NotifierRepository) FindByWorkspaceID(workspaceID uuid.UUID) ([]*Notifi
 
 func (r *NotifierRepository) Delete(notifier *Notifier) error {
 	return storage.GetDb().Transaction(func(tx *gorm.DB) error {
-
 		switch notifier.NotifierType {
 		case NotifierTypeTelegram:
 			if notifier.TelegramNotifier != nil {

backend/internal/features/notifiers/service.go

@@ -8,6 +8,7 @@ import (
 	audit_logs "postgresus-backend/internal/features/audit_logs"
 	users_models "postgresus-backend/internal/features/users/models"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -17,6 +18,7 @@ type NotifierService struct {
 	logger             *slog.Logger
 	workspaceService   *workspaces_services.WorkspaceService
 	auditLogService    *audit_logs.AuditLogService
+	fieldEncryptor     encryption.FieldEncryptor
 }
 
 func (s *NotifierService) SaveNotifier(
@@ -46,7 +48,11 @@ func (s *NotifierService) SaveNotifier(
 
 		existingNotifier.Update(notifier)
 
-		if err := existingNotifier.Validate(); err != nil {
+		if err := existingNotifier.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
+		if err := existingNotifier.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
@@ -63,7 +69,11 @@ func (s *NotifierService) SaveNotifier(
 	} else {
 		notifier.WorkspaceID = workspaceID
 
-		if err := notifier.Validate(); err != nil {
+		if err := notifier.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
+		if err := notifier.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
@@ -175,7 +185,7 @@ func (s *NotifierService) SendTestNotification(
 		return errors.New("insufficient permissions to test notifier in this workspace")
 	}
 
-	err = notifier.Send(s.logger, "Test message", "This is a test message")
+	err = notifier.Send(s.fieldEncryptor, s.logger, "Test message", "This is a test message")
 	if err != nil {
 		return err
 	}
@@ -205,16 +215,24 @@ func (s *NotifierService) SendTestNotificationToNotifier(
 
 		existingNotifier.Update(notifier)
 
-		if err := existingNotifier.Validate(); err != nil {
+		if err := existingNotifier.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
+		if err := existingNotifier.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
 		usingNotifier = existingNotifier
 	} else {
+		if err := notifier.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
 		usingNotifier = notifier
 	}
 
-	return usingNotifier.Send(s.logger, "Test message", "This is a test message")
+	return usingNotifier.Send(s.fieldEncryptor, s.logger, "Test message", "This is a test message")
 }
 
 func (s *NotifierService) SendNotification(
@@ -233,7 +251,7 @@ func (s *NotifierService) SendNotification(
 		return
 	}
 
-	err = notifiedFromDb.Send(s.logger, title, message)
+	err = notifiedFromDb.Send(s.fieldEncryptor, s.logger, title, message)
 	if err != nil {
 		errMsg := err.Error()
 		notifiedFromDb.LastSendError = &errMsg

backend/internal/features/restores/controller_test.go

@@ -29,6 +29,7 @@ import (
 	workspaces_controllers "postgresus-backend/internal/features/workspaces/controllers"
 	workspaces_models "postgresus-backend/internal/features/workspaces/models"
 	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	util_encryption "postgresus-backend/internal/util/encryption"
 	test_utils "postgresus-backend/internal/util/testing"
 	"postgresus-backend/internal/util/tools"
 )
@@ -309,6 +310,7 @@ func createTestBackup(
 	database *databases.Database,
 	owner *users_dto.SignInResponseDTO,
 ) *backups.Backup {
+	fieldEncryptor := util_encryption.GetFieldEncryptor()
 	userService := users_services.GetUserService()
 	user, err := userService.GetUserFromToken(owner.Token)
 	if err != nil {
@@ -323,9 +325,7 @@ func createTestBackup(
 	backup := &backups.Backup{
 		ID:               uuid.New(),
 		DatabaseID:       database.ID,
-		Database:         database,
 		StorageID:        storages[0].ID,
-		Storage:          storages[0],
 		Status:           backups.BackupStatusCompleted,
 		BackupSizeMb:     10.5,
 		BackupDurationMs: 1000,
@@ -340,7 +340,7 @@ func createTestBackup(
 	dummyContent := []byte("dummy backup content for testing")
 	reader := strings.NewReader(string(dummyContent))
 	logger := slog.New(slog.NewTextHandler(io.Discard, nil))
-	if err := storages[0].SaveFile(logger, backup.ID, reader); err != nil {
+	if err := storages[0].SaveFile(fieldEncryptor, logger, backup.ID, reader); err != nil {
 		panic(fmt.Sprintf("Failed to create test backup file: %v", err))
 	}
 

backend/internal/features/restores/repository.go

@@ -62,8 +62,6 @@ func (r *RestoreRepository) FindByStatus(status enums.RestoreStatus) ([]*models.
 
 	if err := storage.
 		GetDb().
-		Preload("Backup.Storage").
-		Preload("Backup.Database").
 		Preload("Backup").
 		Preload("Postgresql").
 		Where("status = ?", status).

backend/internal/features/restores/service.go

@@ -62,12 +62,17 @@ func (s *RestoreService) GetRestores(
 		return nil, err
 	}
 
-	if backup.Database.WorkspaceID == nil {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return nil, err
+	}
+
+	if database.WorkspaceID == nil {
 		return nil, errors.New("cannot get restores for database without workspace")
 	}
 
 	canAccess, _, err := s.workspaceService.CanUserAccessWorkspace(
-		*backup.Database.WorkspaceID,
+		*database.WorkspaceID,
 		user,
 	)
 	if err != nil {
@@ -90,12 +95,17 @@ func (s *RestoreService) RestoreBackupWithAuth(
 		return err
 	}
 
-	if backup.Database.WorkspaceID == nil {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return err
+	}
+
+	if database.WorkspaceID == nil {
 		return errors.New("cannot restore backup for database without workspace")
 	}
 
 	canAccess, _, err := s.workspaceService.CanUserAccessWorkspace(
-		*backup.Database.WorkspaceID,
+		*database.WorkspaceID,
 		user,
 	)
 	if err != nil {
@@ -135,10 +145,10 @@ func (s *RestoreService) RestoreBackupWithAuth(
 		fmt.Sprintf(
 			"Database restored from backup %s for database: %s",
 			backupID.String(),
-			backup.Database.Name,
+			database.Name,
 		),
 		&user.ID,
-		backup.Database.WorkspaceID,
+		database.WorkspaceID,
 	)
 
 	return nil
@@ -152,7 +162,12 @@ func (s *RestoreService) RestoreBackup(
 		return errors.New("backup is not completed")
 	}
 
-	if backup.Database.Type == databases.DatabaseTypePostgres {
+	database, err := s.databaseService.GetDatabaseByID(backup.DatabaseID)
+	if err != nil {
+		return err
+	}
+
+	if database.Type == databases.DatabaseTypePostgres {
 		if requestDTO.PostgresqlDatabase == nil {
 			return errors.New("postgresql database is required")
 		}
@@ -193,7 +208,7 @@ func (s *RestoreService) RestoreBackup(
 	}
 
 	backupConfig, err := s.backupConfigService.GetBackupConfigByDbId(
-		backup.Database.ID,
+		database.ID,
 	)
 	if err != nil {
 		return err
@@ -204,6 +219,7 @@ func (s *RestoreService) RestoreBackup(
 	err = s.restoreBackupUsecase.Execute(
 		backupConfig,
 		restore,
+		database,
 		backup,
 		storage,
 	)

backend/internal/features/restores/usecases/postgresql/di.go

@@ -1,11 +1,13 @@
 package usecases_postgresql
 
 import (
+	users_repositories "postgresus-backend/internal/features/users/repositories"
 	"postgresus-backend/internal/util/logger"
 )
 
 var restorePostgresqlBackupUsecase = &RestorePostgresqlBackupUsecase{
 	logger.GetLogger(),
+	users_repositories.GetSecretKeyRepository(),
 }
 
 func GetRestorePostgresqlBackupUsecase() *RestorePostgresqlBackupUsecase {

backend/internal/features/restores/usecases/postgresql/restore_backup_uc.go

@@ -2,6 +2,7 @@ package usecases_postgresql
 
 import (
 	"context"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"io"
@@ -15,11 +16,14 @@ import (
 
 	"postgresus-backend/internal/config"
 	"postgresus-backend/internal/features/backups/backups"
+	"postgresus-backend/internal/features/backups/backups/encryption"
 	backups_config "postgresus-backend/internal/features/backups/config"
 	"postgresus-backend/internal/features/databases"
 	pgtypes "postgresus-backend/internal/features/databases/databases/postgresql"
 	"postgresus-backend/internal/features/restores/models"
 	"postgresus-backend/internal/features/storages"
+	users_repositories "postgresus-backend/internal/features/users/repositories"
+	util_encryption "postgresus-backend/internal/util/encryption"
 	files_utils "postgresus-backend/internal/util/files"
 	"postgresus-backend/internal/util/tools"
 
@@ -27,16 +31,18 @@ import (
 )
 
 type RestorePostgresqlBackupUsecase struct {
-	logger *slog.Logger
+	logger        *slog.Logger
+	secretKeyRepo *users_repositories.SecretKeyRepository
 }
 
 func (uc *RestorePostgresqlBackupUsecase) Execute(
+	database *databases.Database,
 	backupConfig *backups_config.BackupConfig,
 	restore models.Restore,
 	backup *backups.Backup,
 	storage *storages.Storage,
 ) error {
-	if backup.Database.Type != databases.DatabaseTypePostgres {
+	if database.Type != databases.DatabaseTypePostgres {
 		return errors.New("database type not supported")
 	}
 
@@ -76,6 +82,7 @@ func (uc *RestorePostgresqlBackupUsecase) Execute(
 	}
 
 	return uc.restoreFromStorage(
+		database,
 		tools.GetPostgresqlExecutable(
 			pg.Version,
 			"pg_restore",
@@ -92,6 +99,7 @@ func (uc *RestorePostgresqlBackupUsecase) Execute(
 
 // restoreFromStorage restores backup data from storage using pg_restore
 func (uc *RestorePostgresqlBackupUsecase) restoreFromStorage(
+	database *databases.Database,
 	pgBin string,
 	args []string,
 	password string,
@@ -164,7 +172,7 @@ func (uc *RestorePostgresqlBackupUsecase) restoreFromStorage(
 	// Add the temporary backup file as the last argument to pg_restore
 	args = append(args, tempBackupFile)
 
-	return uc.executePgRestore(ctx, pgBin, args, pgpassFile, pgConfig, backup)
+	return uc.executePgRestore(ctx, database, pgBin, args, pgpassFile, pgConfig)
 }
 
 // downloadBackupToTempFile downloads backup data from storage to a temporary file
@@ -199,18 +207,67 @@ func (uc *RestorePostgresqlBackupUsecase) downloadBackupToTempFile(
 		backup.ID,
 		"tempFile",
 		tempBackupFile,
+		"encrypted",
+		backup.Encryption == backups_config.BackupEncryptionEncrypted,
 	)
-	backupReader, err := storage.GetFile(backup.ID)
+	fieldEncryptor := util_encryption.GetFieldEncryptor()
+	rawReader, err := storage.GetFile(fieldEncryptor, backup.ID)
 	if err != nil {
 		cleanupFunc()
 		return "", nil, fmt.Errorf("failed to get backup file from storage: %w", err)
 	}
 	defer func() {
-		if err := backupReader.Close(); err != nil {
+		if err := rawReader.Close(); err != nil {
 			uc.logger.Error("Failed to close backup reader", "error", err)
 		}
 	}()
 
+	// Create a reader that handles decryption if needed
+	var backupReader io.Reader = rawReader
+	if backup.Encryption == backups_config.BackupEncryptionEncrypted {
+		// Validate encryption metadata
+		if backup.EncryptionSalt == nil || backup.EncryptionIV == nil {
+			cleanupFunc()
+			return "", nil, fmt.Errorf("backup is encrypted but missing encryption metadata")
+		}
+
+		// Get master key
+		masterKey, err := uc.secretKeyRepo.GetSecretKey()
+		if err != nil {
+			cleanupFunc()
+			return "", nil, fmt.Errorf("failed to get master key for decryption: %w", err)
+		}
+
+		// Decode salt and IV from base64
+		salt, err := base64.StdEncoding.DecodeString(*backup.EncryptionSalt)
+		if err != nil {
+			cleanupFunc()
+			return "", nil, fmt.Errorf("failed to decode encryption salt: %w", err)
+		}
+
+		iv, err := base64.StdEncoding.DecodeString(*backup.EncryptionIV)
+		if err != nil {
+			cleanupFunc()
+			return "", nil, fmt.Errorf("failed to decode encryption IV: %w", err)
+		}
+
+		// Create decryption reader
+		decryptReader, err := encryption.NewDecryptionReader(
+			rawReader,
+			masterKey,
+			backup.ID,
+			salt,
+			iv,
+		)
+		if err != nil {
+			cleanupFunc()
+			return "", nil, fmt.Errorf("failed to create decryption reader: %w", err)
+		}
+
+		backupReader = decryptReader
+		uc.logger.Info("Using decryption for encrypted backup", "backupId", backup.ID)
+	}
+
 	// Create temporary backup file
 	tempFile, err := os.Create(tempBackupFile)
 	if err != nil {
@@ -240,11 +297,11 @@ func (uc *RestorePostgresqlBackupUsecase) downloadBackupToTempFile(
 // executePgRestore executes the pg_restore command with proper environment setup
 func (uc *RestorePostgresqlBackupUsecase) executePgRestore(
 	ctx context.Context,
+	database *databases.Database,
 	pgBin string,
 	args []string,
 	pgpassFile string,
 	pgConfig *pgtypes.PostgresqlDatabase,
-	backup *backups.Backup,
 ) error {
 	cmd := exec.CommandContext(ctx, pgBin, args...)
 	uc.logger.Info("Executing PostgreSQL restore command", "command", cmd.String())
@@ -293,7 +350,7 @@ func (uc *RestorePostgresqlBackupUsecase) executePgRestore(
 			return fmt.Errorf("restore cancelled due to shutdown")
 		}
 
-		return uc.handlePgRestoreError(waitErr, stderrOutput, pgBin, args, backup, pgConfig)
+		return uc.handlePgRestoreError(database, waitErr, stderrOutput, pgBin, args, pgConfig)
 	}
 
 	return nil
@@ -341,11 +398,11 @@ func (uc *RestorePostgresqlBackupUsecase) setupPgRestoreEnvironment(
 
 // handlePgRestoreError processes and formats pg_restore errors
 func (uc *RestorePostgresqlBackupUsecase) handlePgRestoreError(
+	database *databases.Database,
 	waitErr error,
 	stderrOutput []byte,
 	pgBin string,
 	args []string,
-	backup *backups.Backup,
 	pgConfig *pgtypes.PostgresqlDatabase,
 ) error {
 	// Enhanced error handling for PostgreSQL connection and restore issues
@@ -416,8 +473,8 @@ func (uc *RestorePostgresqlBackupUsecase) handlePgRestoreError(
 				)
 			} else if containsIgnoreCase(stderrStr, "database") && containsIgnoreCase(stderrStr, "does not exist") {
 				backupDbName := "unknown"
-				if backup.Database != nil && backup.Database.Postgresql != nil && backup.Database.Postgresql.Database != nil {
-					backupDbName = *backup.Database.Postgresql.Database
+				if database.Postgresql != nil && database.Postgresql.Database != nil {
+					backupDbName = *database.Postgresql.Database
 				}
 
 				targetDbName := "unknown"

backend/internal/features/restores/usecases/restore_backup_uc.go

@@ -17,11 +17,13 @@ type RestoreBackupUsecase struct {
 func (uc *RestoreBackupUsecase) Execute(
 	backupConfig *backups_config.BackupConfig,
 	restore models.Restore,
+	database *databases.Database,
 	backup *backups.Backup,
 	storage *storages.Storage,
 ) error {
-	if restore.Backup.Database.Type == databases.DatabaseTypePostgres {
+	if database.Type == databases.DatabaseTypePostgres {
 		return uc.restorePostgresqlBackupUsecase.Execute(
+			database,
 			backupConfig,
 			restore,
 			backup,

backend/internal/features/storages/controller_test.go

@@ -3,10 +3,14 @@ package storages
 import (
 	"fmt"
 	"net/http"
+	"strings"
 	"testing"
 
 	audit_logs "postgresus-backend/internal/features/audit_logs"
+	azure_blob_storage "postgresus-backend/internal/features/storages/models/azure_blob"
+	google_drive_storage "postgresus-backend/internal/features/storages/models/google_drive"
 	local_storage "postgresus-backend/internal/features/storages/models/local"
+	nas_storage "postgresus-backend/internal/features/storages/models/nas"
 	s3_storage "postgresus-backend/internal/features/storages/models/s3"
 	users_enums "postgresus-backend/internal/features/users/enums"
 	users_middleware "postgresus-backend/internal/features/users/middleware"
@@ -14,6 +18,7 @@ import (
 	users_testing "postgresus-backend/internal/features/users/testing"
 	workspaces_controllers "postgresus-backend/internal/features/workspaces/controllers"
 	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	"postgresus-backend/internal/util/encryption"
 	test_utils "postgresus-backend/internal/util/testing"
 
 	"github.com/gin-gonic/gin"
@@ -438,6 +443,386 @@ func Test_CrossWorkspaceSecurity_CannotAccessStorageFromAnotherWorkspace(t *test
 	workspaces_testing.RemoveTestWorkspace(workspace2, router)
 }
 
+func Test_StorageSensitiveDataLifecycle_AllTypes(t *testing.T) {
+	testCases := []struct {
+		name                string
+		storageType         StorageType
+		createStorage       func(workspaceID uuid.UUID) *Storage
+		updateStorage       func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage
+		verifySensitiveData func(t *testing.T, storage *Storage)
+		verifyHiddenData    func(t *testing.T, storage *Storage)
+	}{
+		{
+			name:        "S3 Storage",
+			storageType: StorageTypeS3,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeS3,
+					Name:        "Test S3 Storage",
+					S3Storage: &s3_storage.S3Storage{
+						S3Bucket:    "test-bucket",
+						S3Region:    "us-east-1",
+						S3AccessKey: "original-access-key",
+						S3SecretKey: "original-secret-key",
+						S3Endpoint:  "https://s3.amazonaws.com",
+					},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:          storageID,
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeS3,
+					Name:        "Updated S3 Storage",
+					S3Storage: &s3_storage.S3Storage{
+						S3Bucket:    "updated-bucket",
+						S3Region:    "us-west-2",
+						S3AccessKey: "",
+						S3SecretKey: "",
+						S3Endpoint:  "https://s3.us-west-2.amazonaws.com",
+					},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+				assert.True(t, strings.HasPrefix(storage.S3Storage.S3AccessKey, "enc:"),
+					"S3AccessKey should be encrypted with 'enc:' prefix")
+				assert.True(t, strings.HasPrefix(storage.S3Storage.S3SecretKey, "enc:"),
+					"S3SecretKey should be encrypted with 'enc:' prefix")
+
+				encryptor := encryption.GetFieldEncryptor()
+				accessKey, err := encryptor.Decrypt(storage.ID, storage.S3Storage.S3AccessKey)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-access-key", accessKey)
+
+				secretKey, err := encryptor.Decrypt(storage.ID, storage.S3Storage.S3SecretKey)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-secret-key", secretKey)
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+				assert.Equal(t, "", storage.S3Storage.S3AccessKey)
+				assert.Equal(t, "", storage.S3Storage.S3SecretKey)
+			},
+		},
+		{
+			name:        "Local Storage",
+			storageType: StorageTypeLocal,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID:  workspaceID,
+					Type:         StorageTypeLocal,
+					Name:         "Test Local Storage",
+					LocalStorage: &local_storage.LocalStorage{},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:           storageID,
+					WorkspaceID:  workspaceID,
+					Type:         StorageTypeLocal,
+					Name:         "Updated Local Storage",
+					LocalStorage: &local_storage.LocalStorage{},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+			},
+		},
+		{
+			name:        "NAS Storage",
+			storageType: StorageTypeNAS,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeNAS,
+					Name:        "Test NAS Storage",
+					NASStorage: &nas_storage.NASStorage{
+						Host:     "nas.example.com",
+						Port:     445,
+						Share:    "backups",
+						Username: "testuser",
+						Password: "original-password",
+						UseSSL:   false,
+						Domain:   "WORKGROUP",
+						Path:     "/test",
+					},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:          storageID,
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeNAS,
+					Name:        "Updated NAS Storage",
+					NASStorage: &nas_storage.NASStorage{
+						Host:     "nas2.example.com",
+						Port:     445,
+						Share:    "backups2",
+						Username: "testuser2",
+						Password: "",
+						UseSSL:   true,
+						Domain:   "WORKGROUP2",
+						Path:     "/test2",
+					},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+				assert.True(t, strings.HasPrefix(storage.NASStorage.Password, "enc:"),
+					"Password should be encrypted with 'enc:' prefix")
+
+				encryptor := encryption.GetFieldEncryptor()
+				password, err := encryptor.Decrypt(storage.ID, storage.NASStorage.Password)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-password", password)
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+				assert.Equal(t, "", storage.NASStorage.Password)
+			},
+		},
+		{
+			name:        "Azure Blob Storage (Connection String)",
+			storageType: StorageTypeAzureBlob,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeAzureBlob,
+					Name:        "Test Azure Blob Storage",
+					AzureBlobStorage: &azure_blob_storage.AzureBlobStorage{
+						AuthMethod:       azure_blob_storage.AuthMethodConnectionString,
+						ConnectionString: "original-connection-string",
+						ContainerName:    "test-container",
+						Endpoint:         "",
+						Prefix:           "backups/",
+					},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:          storageID,
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeAzureBlob,
+					Name:        "Updated Azure Blob Storage",
+					AzureBlobStorage: &azure_blob_storage.AzureBlobStorage{
+						AuthMethod:       azure_blob_storage.AuthMethodConnectionString,
+						ConnectionString: "",
+						ContainerName:    "updated-container",
+						Endpoint:         "https://custom.blob.core.windows.net",
+						Prefix:           "backups2/",
+					},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+				assert.True(t, strings.HasPrefix(storage.AzureBlobStorage.ConnectionString, "enc:"),
+					"ConnectionString should be encrypted with 'enc:' prefix")
+
+				encryptor := encryption.GetFieldEncryptor()
+				connectionString, err := encryptor.Decrypt(
+					storage.ID,
+					storage.AzureBlobStorage.ConnectionString,
+				)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-connection-string", connectionString)
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+				assert.Equal(t, "", storage.AzureBlobStorage.ConnectionString)
+				assert.Equal(t, "", storage.AzureBlobStorage.AccountKey)
+			},
+		},
+		{
+			name:        "Azure Blob Storage (Account Key)",
+			storageType: StorageTypeAzureBlob,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeAzureBlob,
+					Name:        "Test Azure Blob with Account Key",
+					AzureBlobStorage: &azure_blob_storage.AzureBlobStorage{
+						AuthMethod:    azure_blob_storage.AuthMethodAccountKey,
+						AccountName:   "testaccount",
+						AccountKey:    "original-account-key",
+						ContainerName: "test-container",
+						Endpoint:      "",
+						Prefix:        "backups/",
+					},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:          storageID,
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeAzureBlob,
+					Name:        "Updated Azure Blob with Account Key",
+					AzureBlobStorage: &azure_blob_storage.AzureBlobStorage{
+						AuthMethod:    azure_blob_storage.AuthMethodAccountKey,
+						AccountName:   "updatedaccount",
+						AccountKey:    "",
+						ContainerName: "updated-container",
+						Endpoint:      "https://custom.blob.core.windows.net",
+						Prefix:        "backups2/",
+					},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+				assert.True(t, strings.HasPrefix(storage.AzureBlobStorage.AccountKey, "enc:"),
+					"AccountKey should be encrypted with 'enc:' prefix")
+
+				encryptor := encryption.GetFieldEncryptor()
+				accountKey, err := encryptor.Decrypt(
+					storage.ID,
+					storage.AzureBlobStorage.AccountKey,
+				)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-account-key", accountKey)
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+				assert.Equal(t, "", storage.AzureBlobStorage.ConnectionString)
+				assert.Equal(t, "", storage.AzureBlobStorage.AccountKey)
+			},
+		},
+		{
+			name:        "Google Drive Storage",
+			storageType: StorageTypeGoogleDrive,
+			createStorage: func(workspaceID uuid.UUID) *Storage {
+				return &Storage{
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeGoogleDrive,
+					Name:        "Test Google Drive Storage",
+					GoogleDriveStorage: &google_drive_storage.GoogleDriveStorage{
+						ClientID:     "original-client-id",
+						ClientSecret: "original-client-secret",
+						TokenJSON:    `{"access_token":"ya29.test-access-token","token_type":"Bearer","expiry":"2030-12-31T23:59:59Z","refresh_token":"1//test-refresh-token"}`,
+					},
+				}
+			},
+			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
+				return &Storage{
+					ID:          storageID,
+					WorkspaceID: workspaceID,
+					Type:        StorageTypeGoogleDrive,
+					Name:        "Updated Google Drive Storage",
+					GoogleDriveStorage: &google_drive_storage.GoogleDriveStorage{
+						ClientID:     "updated-client-id",
+						ClientSecret: "",
+						TokenJSON:    "",
+					},
+				}
+			},
+			verifySensitiveData: func(t *testing.T, storage *Storage) {
+				assert.True(t, strings.HasPrefix(storage.GoogleDriveStorage.ClientSecret, "enc:"),
+					"ClientSecret should be encrypted with 'enc:' prefix")
+				assert.True(t, strings.HasPrefix(storage.GoogleDriveStorage.TokenJSON, "enc:"),
+					"TokenJSON should be encrypted with 'enc:' prefix")
+
+				encryptor := encryption.GetFieldEncryptor()
+				clientSecret, err := encryptor.Decrypt(
+					storage.ID,
+					storage.GoogleDriveStorage.ClientSecret,
+				)
+				assert.NoError(t, err)
+				assert.Equal(t, "original-client-secret", clientSecret)
+
+				tokenJSON, err := encryptor.Decrypt(
+					storage.ID,
+					storage.GoogleDriveStorage.TokenJSON,
+				)
+				assert.NoError(t, err)
+				assert.Equal(
+					t,
+					`{"access_token":"ya29.test-access-token","token_type":"Bearer","expiry":"2030-12-31T23:59:59Z","refresh_token":"1//test-refresh-token"}`,
+					tokenJSON,
+				)
+			},
+			verifyHiddenData: func(t *testing.T, storage *Storage) {
+				assert.Equal(t, "", storage.GoogleDriveStorage.ClientSecret)
+				assert.Equal(t, "", storage.GoogleDriveStorage.TokenJSON)
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
+			router := createRouter()
+			workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
+
+			// Phase 1: Create storage with sensitive data
+			initialStorage := tc.createStorage(workspace.ID)
+			var createdStorage Storage
+			test_utils.MakePostRequestAndUnmarshal(
+				t,
+				router,
+				"/api/v1/storages",
+				"Bearer "+owner.Token,
+				*initialStorage,
+				http.StatusOK,
+				&createdStorage,
+			)
+
+			assert.NotEmpty(t, createdStorage.ID)
+			assert.Equal(t, initialStorage.Name, createdStorage.Name)
+
+			// Phase 2: Verify sensitive data is encrypted in repository after creation
+			repository := &StorageRepository{}
+			storageFromDBAfterCreate, err := repository.FindByID(createdStorage.ID)
+			assert.NoError(t, err)
+			tc.verifySensitiveData(t, storageFromDBAfterCreate)
+
+			// Phase 3: Read via service - sensitive data should be hidden
+			var retrievedStorage Storage
+			test_utils.MakeGetRequestAndUnmarshal(
+				t,
+				router,
+				fmt.Sprintf("/api/v1/storages/%s", createdStorage.ID.String()),
+				"Bearer "+owner.Token,
+				http.StatusOK,
+				&retrievedStorage,
+			)
+
+			tc.verifyHiddenData(t, &retrievedStorage)
+			assert.Equal(t, initialStorage.Name, retrievedStorage.Name)
+
+			// Phase 4: Update with non-sensitive changes only (sensitive fields empty)
+			updatedStorage := tc.updateStorage(workspace.ID, createdStorage.ID)
+			var updateResponse Storage
+			test_utils.MakePostRequestAndUnmarshal(
+				t,
+				router,
+				"/api/v1/storages",
+				"Bearer "+owner.Token,
+				*updatedStorage,
+				http.StatusOK,
+				&updateResponse,
+			)
+
+			// Verify non-sensitive fields were updated
+			assert.Equal(t, updatedStorage.Name, updateResponse.Name)
+
+			// Phase 5: Retrieve directly from repository to verify sensitive data preservation
+			storageFromDB, err := repository.FindByID(createdStorage.ID)
+			assert.NoError(t, err)
+
+			// Verify original sensitive data is still present in DB
+			tc.verifySensitiveData(t, storageFromDB)
+
+			// Verify non-sensitive fields were updated in DB
+			assert.Equal(t, updatedStorage.Name, storageFromDB.Name)
+
+			// Additional verification: Check via GET that data is still hidden
+			var finalRetrieved Storage
+			test_utils.MakeGetRequestAndUnmarshal(
+				t,
+				router,
+				fmt.Sprintf("/api/v1/storages/%s", createdStorage.ID.String()),
+				"Bearer "+owner.Token,
+				http.StatusOK,
+				&finalRetrieved,
+			)
+			tc.verifyHiddenData(t, &finalRetrieved)
+		})
+	}
+}
+
 func createRouter() *gin.Engine {
 	gin.SetMode(gin.TestMode)
 	router := gin.New()
@@ -485,158 +870,3 @@ func deleteStorage(
 		http.StatusOK,
 	)
 }
-
-func Test_StorageSensitiveDataLifecycle_AllTypes(t *testing.T) {
-	testCases := []struct {
-		name                string
-		storageType         StorageType
-		createStorage       func(workspaceID uuid.UUID) *Storage
-		updateStorage       func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage
-		verifySensitiveData func(t *testing.T, storage *Storage)
-		verifyHiddenData    func(t *testing.T, storage *Storage)
-	}{
-		{
-			name:        "S3 Storage",
-			storageType: StorageTypeS3,
-			createStorage: func(workspaceID uuid.UUID) *Storage {
-				return &Storage{
-					WorkspaceID: workspaceID,
-					Type:        StorageTypeS3,
-					Name:        "Test S3 Storage",
-					S3Storage: &s3_storage.S3Storage{
-						S3Bucket:    "test-bucket",
-						S3Region:    "us-east-1",
-						S3AccessKey: "original-access-key",
-						S3SecretKey: "original-secret-key",
-						S3Endpoint:  "https://s3.amazonaws.com",
-					},
-				}
-			},
-			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
-				return &Storage{
-					ID:          storageID,
-					WorkspaceID: workspaceID,
-					Type:        StorageTypeS3,
-					Name:        "Updated S3 Storage",
-					S3Storage: &s3_storage.S3Storage{
-						S3Bucket:    "updated-bucket",
-						S3Region:    "us-west-2",
-						S3AccessKey: "",
-						S3SecretKey: "",
-						S3Endpoint:  "https://s3.us-west-2.amazonaws.com",
-					},
-				}
-			},
-			verifySensitiveData: func(t *testing.T, storage *Storage) {
-				assert.Equal(t, "original-access-key", storage.S3Storage.S3AccessKey)
-				assert.Equal(t, "original-secret-key", storage.S3Storage.S3SecretKey)
-			},
-			verifyHiddenData: func(t *testing.T, storage *Storage) {
-				assert.Equal(t, "", storage.S3Storage.S3AccessKey)
-				assert.Equal(t, "", storage.S3Storage.S3SecretKey)
-			},
-		},
-		{
-			name:        "Local Storage",
-			storageType: StorageTypeLocal,
-			createStorage: func(workspaceID uuid.UUID) *Storage {
-				return &Storage{
-					WorkspaceID:  workspaceID,
-					Type:         StorageTypeLocal,
-					Name:         "Test Local Storage",
-					LocalStorage: &local_storage.LocalStorage{},
-				}
-			},
-			updateStorage: func(workspaceID uuid.UUID, storageID uuid.UUID) *Storage {
-				return &Storage{
-					ID:           storageID,
-					WorkspaceID:  workspaceID,
-					Type:         StorageTypeLocal,
-					Name:         "Updated Local Storage",
-					LocalStorage: &local_storage.LocalStorage{},
-				}
-			},
-			verifySensitiveData: func(t *testing.T, storage *Storage) {
-			},
-			verifyHiddenData: func(t *testing.T, storage *Storage) {
-			},
-		},
-	}
-
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			owner := users_testing.CreateTestUser(users_enums.UserRoleMember)
-			router := createRouter()
-			workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", owner, router)
-
-			// Phase 1: Create storage with sensitive data
-			initialStorage := tc.createStorage(workspace.ID)
-			var createdStorage Storage
-			test_utils.MakePostRequestAndUnmarshal(
-				t,
-				router,
-				"/api/v1/storages",
-				"Bearer "+owner.Token,
-				*initialStorage,
-				http.StatusOK,
-				&createdStorage,
-			)
-
-			assert.NotEmpty(t, createdStorage.ID)
-			assert.Equal(t, initialStorage.Name, createdStorage.Name)
-
-			// Phase 2: Read via service - sensitive data should be hidden
-			var retrievedStorage Storage
-			test_utils.MakeGetRequestAndUnmarshal(
-				t,
-				router,
-				fmt.Sprintf("/api/v1/storages/%s", createdStorage.ID.String()),
-				"Bearer "+owner.Token,
-				http.StatusOK,
-				&retrievedStorage,
-			)
-
-			tc.verifyHiddenData(t, &retrievedStorage)
-			assert.Equal(t, initialStorage.Name, retrievedStorage.Name)
-
-			// Phase 3: Update with non-sensitive changes only (sensitive fields empty)
-			updatedStorage := tc.updateStorage(workspace.ID, createdStorage.ID)
-			var updateResponse Storage
-			test_utils.MakePostRequestAndUnmarshal(
-				t,
-				router,
-				"/api/v1/storages",
-				"Bearer "+owner.Token,
-				*updatedStorage,
-				http.StatusOK,
-				&updateResponse,
-			)
-
-			// Verify non-sensitive fields were updated
-			assert.Equal(t, updatedStorage.Name, updateResponse.Name)
-
-			// Phase 4: Retrieve directly from repository to verify sensitive data preservation
-			repository := &StorageRepository{}
-			storageFromDB, err := repository.FindByID(createdStorage.ID)
-			assert.NoError(t, err)
-
-			// Verify original sensitive data is still present in DB
-			tc.verifySensitiveData(t, storageFromDB)
-
-			// Verify non-sensitive fields were updated in DB
-			assert.Equal(t, updatedStorage.Name, storageFromDB.Name)
-
-			// Additional verification: Check via GET that data is still hidden
-			var finalRetrieved Storage
-			test_utils.MakeGetRequestAndUnmarshal(
-				t,
-				router,
-				fmt.Sprintf("/api/v1/storages/%s", createdStorage.ID.String()),
-				"Bearer "+owner.Token,
-				http.StatusOK,
-				&finalRetrieved,
-			)
-			tc.verifyHiddenData(t, &finalRetrieved)
-		})
-	}
-}

backend/internal/features/storages/di.go

@@ -3,6 +3,7 @@ package storages
 import (
 	audit_logs "postgresus-backend/internal/features/audit_logs"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 )
 
 var storageRepository = &StorageRepository{}
@@ -10,6 +11,7 @@ var storageService = &StorageService{
 	storageRepository,
 	workspaces_services.GetWorkspaceService(),
 	audit_logs.GetAuditLogService(),
+	encryption.GetFieldEncryptor(),
 }
 var storageController = &StorageController{
 	storageService,

backend/internal/features/storages/enums.go

@@ -7,4 +7,5 @@ const (
 	StorageTypeS3          StorageType = "S3"
 	StorageTypeGoogleDrive StorageType = "GOOGLE_DRIVE"
 	StorageTypeNAS         StorageType = "NAS"
+	StorageTypeAzureBlob   StorageType = "AZURE_BLOB"
 )

backend/internal/features/storages/interfaces.go

@@ -3,20 +3,28 @@ package storages
 import (
 	"io"
 	"log/slog"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
 
 type StorageFileSaver interface {
-	SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error
+	SaveFile(
+		encryptor encryption.FieldEncryptor,
+		logger *slog.Logger,
+		fileID uuid.UUID,
+		file io.Reader,
+	) error
 
-	GetFile(fileID uuid.UUID) (io.ReadCloser, error)
+	GetFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) (io.ReadCloser, error)
 
-	DeleteFile(fileID uuid.UUID) error
+	DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error
 
-	Validate() error
+	Validate(encryptor encryption.FieldEncryptor) error
 
-	TestConnection() error
+	TestConnection(encryptor encryption.FieldEncryptor) error
 
 	HideSensitiveData()
+
+	EncryptSensitiveData(encryptor encryption.FieldEncryptor) error
 }

backend/internal/features/storages/model.go

@@ -4,10 +4,12 @@ import (
 	"errors"
 	"io"
 	"log/slog"
+	azure_blob_storage "postgresus-backend/internal/features/storages/models/azure_blob"
 	google_drive_storage "postgresus-backend/internal/features/storages/models/google_drive"
 	local_storage "postgresus-backend/internal/features/storages/models/local"
 	nas_storage "postgresus-backend/internal/features/storages/models/nas"
 	s3_storage "postgresus-backend/internal/features/storages/models/s3"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -24,10 +26,16 @@ type Storage struct {
 	S3Storage          *s3_storage.S3Storage                    `json:"s3Storage"          gorm:"foreignKey:StorageID"`
 	GoogleDriveStorage *google_drive_storage.GoogleDriveStorage `json:"googleDriveStorage" gorm:"foreignKey:StorageID"`
 	NASStorage         *nas_storage.NASStorage                  `json:"nasStorage"         gorm:"foreignKey:StorageID"`
+	AzureBlobStorage   *azure_blob_storage.AzureBlobStorage     `json:"azureBlobStorage"   gorm:"foreignKey:StorageID"`
 }
 
-func (s *Storage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error {
-	err := s.getSpecificStorage().SaveFile(logger, fileID, file)
+func (s *Storage) SaveFile(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	fileID uuid.UUID,
+	file io.Reader,
+) error {
+	err := s.getSpecificStorage().SaveFile(encryptor, logger, fileID, file)
 	if err != nil {
 		lastSaveError := err.Error()
 		s.LastSaveError = &lastSaveError
@@ -39,15 +47,18 @@ func (s *Storage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader
 	return nil
 }
 
-func (s *Storage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
-	return s.getSpecificStorage().GetFile(fileID)
+func (s *Storage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
+	return s.getSpecificStorage().GetFile(encryptor, fileID)
 }
 
-func (s *Storage) DeleteFile(fileID uuid.UUID) error {
-	return s.getSpecificStorage().DeleteFile(fileID)
+func (s *Storage) DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error {
+	return s.getSpecificStorage().DeleteFile(encryptor, fileID)
 }
 
-func (s *Storage) Validate() error {
+func (s *Storage) Validate(encryptor encryption.FieldEncryptor) error {
 	if s.Type == "" {
 		return errors.New("storage type is required")
 	}
@@ -56,17 +67,21 @@ func (s *Storage) Validate() error {
 		return errors.New("storage name is required")
 	}
 
-	return s.getSpecificStorage().Validate()
+	return s.getSpecificStorage().Validate(encryptor)
 }
 
-func (s *Storage) TestConnection() error {
-	return s.getSpecificStorage().TestConnection()
+func (s *Storage) TestConnection(encryptor encryption.FieldEncryptor) error {
+	return s.getSpecificStorage().TestConnection(encryptor)
 }
 
 func (s *Storage) HideSensitiveData() {
 	s.getSpecificStorage().HideSensitiveData()
 }
 
+func (s *Storage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	return s.getSpecificStorage().EncryptSensitiveData(encryptor)
+}
+
 func (s *Storage) Update(incoming *Storage) {
 	s.Name = incoming.Name
 	s.Type = incoming.Type
@@ -88,6 +103,10 @@ func (s *Storage) Update(incoming *Storage) {
 		if s.NASStorage != nil && incoming.NASStorage != nil {
 			s.NASStorage.Update(incoming.NASStorage)
 		}
+	case StorageTypeAzureBlob:
+		if s.AzureBlobStorage != nil && incoming.AzureBlobStorage != nil {
+			s.AzureBlobStorage.Update(incoming.AzureBlobStorage)
+		}
 	}
 }
 
@@ -101,6 +120,8 @@ func (s *Storage) getSpecificStorage() StorageFileSaver {
 		return s.GoogleDriveStorage
 	case StorageTypeNAS:
 		return s.NASStorage
+	case StorageTypeAzureBlob:
+		return s.AzureBlobStorage
 	default:
 		panic("invalid storage type: " + string(s.Type))
 	}

backend/internal/features/storages/model_test.go

@@ -8,15 +8,18 @@ import (
 	"os"
 	"path/filepath"
 	"postgresus-backend/internal/config"
+	azure_blob_storage "postgresus-backend/internal/features/storages/models/azure_blob"
 	google_drive_storage "postgresus-backend/internal/features/storages/models/google_drive"
 	local_storage "postgresus-backend/internal/features/storages/models/local"
 	nas_storage "postgresus-backend/internal/features/storages/models/nas"
 	s3_storage "postgresus-backend/internal/features/storages/models/s3"
+	"postgresus-backend/internal/util/encryption"
 	"postgresus-backend/internal/util/logger"
 	"strconv"
 	"testing"
 	"time"
 
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
 	"github.com/google/uuid"
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
@@ -32,6 +35,15 @@ type S3Container struct {
 	region     string
 }
 
+type AzuriteContainer struct {
+	endpoint         string
+	accountName      string
+	accountKey       string
+	containerNameKey string
+	containerNameStr string
+	connectionString string
+}
+
 func Test_Storage_BasicOperations(t *testing.T) {
 	ctx := context.Background()
 
@@ -41,6 +53,10 @@ func Test_Storage_BasicOperations(t *testing.T) {
 	s3Container, err := setupS3Container(ctx)
 	require.NoError(t, err, "Failed to setup S3 container")
 
+	// Setup Azurite connection
+	azuriteContainer, err := setupAzuriteContainer(ctx)
+	require.NoError(t, err, "Failed to setup Azurite container")
+
 	// Setup test file
 	testFilePath, err := setupTestFile()
 	require.NoError(t, err, "Failed to setup test file")
@@ -88,6 +104,26 @@ func Test_Storage_BasicOperations(t *testing.T) {
 				Path:      "test-files",
 			},
 		},
+		{
+			name: "AzureBlobStorage_AccountKey",
+			storage: &azure_blob_storage.AzureBlobStorage{
+				StorageID:     uuid.New(),
+				AuthMethod:    azure_blob_storage.AuthMethodAccountKey,
+				AccountName:   azuriteContainer.accountName,
+				AccountKey:    azuriteContainer.accountKey,
+				ContainerName: azuriteContainer.containerNameKey,
+				Endpoint:      azuriteContainer.endpoint,
+			},
+		},
+		{
+			name: "AzureBlobStorage_ConnectionString",
+			storage: &azure_blob_storage.AzureBlobStorage{
+				StorageID:        uuid.New(),
+				AuthMethod:       azure_blob_storage.AuthMethodConnectionString,
+				ConnectionString: azuriteContainer.connectionString,
+				ContainerName:    azuriteContainer.containerNameStr,
+			},
+		},
 	}
 
 	// Add Google Drive storage test only if environment variables are available
@@ -112,13 +148,15 @@ func Test_Storage_BasicOperations(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
+			encryptor := encryption.GetFieldEncryptor()
+
 			t.Run("Test_TestConnection_ConnectionSucceeds", func(t *testing.T) {
-				err := tc.storage.TestConnection()
+				err := tc.storage.TestConnection(encryptor)
 				assert.NoError(t, err, "TestConnection should succeed")
 			})
 
 			t.Run("Test_TestValidation_ValidationSucceeds", func(t *testing.T) {
-				err := tc.storage.Validate()
+				err := tc.storage.Validate(encryptor)
 				assert.NoError(t, err, "Validate should succeed")
 			})
 
@@ -128,10 +166,15 @@ func Test_Storage_BasicOperations(t *testing.T) {
 
 				fileID := uuid.New()
 
-				err = tc.storage.SaveFile(logger.GetLogger(), fileID, bytes.NewReader(fileData))
+				err = tc.storage.SaveFile(
+					encryptor,
+					logger.GetLogger(),
+					fileID,
+					bytes.NewReader(fileData),
+				)
 				require.NoError(t, err, "SaveFile should succeed")
 
-				file, err := tc.storage.GetFile(fileID)
+				file, err := tc.storage.GetFile(encryptor, fileID)
 				assert.NoError(t, err, "GetFile should succeed")
 				defer file.Close()
 
@@ -145,13 +188,18 @@ func Test_Storage_BasicOperations(t *testing.T) {
 				require.NoError(t, err, "Should be able to read test file")
 
 				fileID := uuid.New()
-				err = tc.storage.SaveFile(logger.GetLogger(), fileID, bytes.NewReader(fileData))
+				err = tc.storage.SaveFile(
+					encryptor,
+					logger.GetLogger(),
+					fileID,
+					bytes.NewReader(fileData),
+				)
 				require.NoError(t, err, "SaveFile should succeed")
 
-				err = tc.storage.DeleteFile(fileID)
+				err = tc.storage.DeleteFile(encryptor, fileID)
 				assert.NoError(t, err, "DeleteFile should succeed")
 
-				file, err := tc.storage.GetFile(fileID)
+				file, err := tc.storage.GetFile(encryptor, fileID)
 				assert.Error(t, err, "GetFile should fail for non-existent file")
 				if file != nil {
 					file.Close()
@@ -161,7 +209,7 @@ func Test_Storage_BasicOperations(t *testing.T) {
 			t.Run("Test_TestDeleteNonExistentFile_DoesNotError", func(t *testing.T) {
 				// Try to delete a non-existent file
 				nonExistentID := uuid.New()
-				err := tc.storage.DeleteFile(nonExistentID)
+				err := tc.storage.DeleteFile(encryptor, nonExistentID)
 				assert.NoError(t, err, "DeleteFile should not error for non-existent file")
 			})
 		})
@@ -230,8 +278,59 @@ func setupS3Container(ctx context.Context) (*S3Container, error) {
 	}, nil
 }
 
+func setupAzuriteContainer(ctx context.Context) (*AzuriteContainer, error) {
+	env := config.GetEnv()
+
+	accountName := "devstoreaccount1"
+	// this is real testing key for azurite, it's not a real key
+	accountKey := "Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw=="
+	serviceURL := fmt.Sprintf("http://127.0.0.1:%s/%s", env.TestAzuriteBlobPort, accountName)
+	containerNameKey := "test-container-key"
+	containerNameStr := "test-container-connstr"
+
+	// Build explicit connection string for Azurite
+	connectionString := fmt.Sprintf(
+		"DefaultEndpointsProtocol=http;AccountName=%s;AccountKey=%s;BlobEndpoint=http://127.0.0.1:%s/%s",
+		accountName,
+		accountKey,
+		env.TestAzuriteBlobPort,
+		accountName,
+	)
+
+	// Create client using connection string to set up containers
+	client, err := azblob.NewClientFromConnectionString(connectionString, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create azblob client: %w", err)
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
+	defer cancel()
+
+	// Create container for account key auth
+	_, err = client.CreateContainer(ctx, containerNameKey, nil)
+	if err != nil {
+		// Container might already exist, that's okay
+	}
+
+	// Create container for connection string auth
+	_, err = client.CreateContainer(ctx, containerNameStr, nil)
+	if err != nil {
+		// Container might already exist, that's okay
+	}
+
+	return &AzuriteContainer{
+		endpoint:         serviceURL,
+		accountName:      accountName,
+		accountKey:       accountKey,
+		containerNameKey: containerNameKey,
+		containerNameStr: containerNameStr,
+		connectionString: connectionString,
+	}, nil
+}
+
 func validateEnvVariables(t *testing.T) {
 	env := config.GetEnv()
 	assert.NotEmpty(t, env.TestMinioPort, "TEST_MINIO_PORT is empty")
+	assert.NotEmpty(t, env.TestAzuriteBlobPort, "TEST_AZURITE_BLOB_PORT is empty")
 	assert.NotEmpty(t, env.TestNASPort, "TEST_NAS_PORT is empty")
 }

backend/internal/features/storages/models/azure_blob/model.go

@@ -0,0 +1,303 @@
+package azure_blob_storage
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"log/slog"
+	"postgresus-backend/internal/util/encryption"
+	"strings"
+	"time"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
+	"github.com/google/uuid"
+)
+
+type AuthMethod string
+
+const (
+	AuthMethodConnectionString AuthMethod = "CONNECTION_STRING"
+	AuthMethodAccountKey       AuthMethod = "ACCOUNT_KEY"
+)
+
+type AzureBlobStorage struct {
+	StorageID        uuid.UUID  `json:"storageId"        gorm:"primaryKey;type:uuid;column:storage_id"`
+	AuthMethod       AuthMethod `json:"authMethod"       gorm:"not null;type:text;column:auth_method"`
+	ConnectionString string     `json:"connectionString" gorm:"type:text;column:connection_string"`
+	AccountName      string     `json:"accountName"      gorm:"type:text;column:account_name"`
+	AccountKey       string     `json:"accountKey"       gorm:"type:text;column:account_key"`
+	ContainerName    string     `json:"containerName"    gorm:"not null;type:text;column:container_name"`
+	Endpoint         string     `json:"endpoint"         gorm:"type:text;column:endpoint"`
+	Prefix           string     `json:"prefix"           gorm:"type:text;column:prefix"`
+}
+
+func (s *AzureBlobStorage) TableName() string {
+	return "azure_blob_storages"
+}
+
+func (s *AzureBlobStorage) SaveFile(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	fileID uuid.UUID,
+	file io.Reader,
+) error {
+	client, err := s.getClient(encryptor)
+	if err != nil {
+		return err
+	}
+
+	blobName := s.buildBlobName(fileID.String())
+
+	_, err = client.UploadStream(
+		context.TODO(),
+		s.ContainerName,
+		blobName,
+		file,
+		nil,
+	)
+	if err != nil {
+		return fmt.Errorf("failed to upload blob to Azure: %w", err)
+	}
+
+	return nil
+}
+
+func (s *AzureBlobStorage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
+	client, err := s.getClient(encryptor)
+	if err != nil {
+		return nil, err
+	}
+
+	blobName := s.buildBlobName(fileID.String())
+
+	response, err := client.DownloadStream(
+		context.TODO(),
+		s.ContainerName,
+		blobName,
+		nil,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to download blob from Azure: %w", err)
+	}
+
+	return response.Body, nil
+}
+
+func (s *AzureBlobStorage) DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error {
+	client, err := s.getClient(encryptor)
+	if err != nil {
+		return err
+	}
+
+	blobName := s.buildBlobName(fileID.String())
+
+	_, err = client.DeleteBlob(
+		context.TODO(),
+		s.ContainerName,
+		blobName,
+		nil,
+	)
+	if err != nil {
+		var respErr *azcore.ResponseError
+		if errors.As(err, &respErr) && respErr.StatusCode == 404 {
+			return nil
+		}
+		return fmt.Errorf("failed to delete blob from Azure: %w", err)
+	}
+
+	return nil
+}
+
+func (s *AzureBlobStorage) Validate(encryptor encryption.FieldEncryptor) error {
+	if s.ContainerName == "" {
+		return errors.New("container name is required")
+	}
+
+	switch s.AuthMethod {
+	case AuthMethodConnectionString:
+		if s.ConnectionString == "" {
+			return errors.New(
+				"connection string is required when using CONNECTION_STRING auth method",
+			)
+		}
+	case AuthMethodAccountKey:
+		if s.AccountName == "" {
+			return errors.New("account name is required when using ACCOUNT_KEY auth method")
+		}
+		if s.AccountKey == "" {
+			return errors.New("account key is required when using ACCOUNT_KEY auth method")
+		}
+	default:
+		return fmt.Errorf("invalid auth method: %s", s.AuthMethod)
+	}
+
+	return nil
+}
+
+func (s *AzureBlobStorage) TestConnection(encryptor encryption.FieldEncryptor) error {
+	client, err := s.getClient(encryptor)
+	if err != nil {
+		return err
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	containerClient := client.ServiceClient().NewContainerClient(s.ContainerName)
+	_, err = containerClient.GetProperties(ctx, nil)
+	if err != nil {
+		var respErr *azcore.ResponseError
+		if errors.As(err, &respErr) {
+			if respErr.StatusCode == 404 {
+				return fmt.Errorf("container '%s' does not exist", s.ContainerName)
+			}
+		}
+		if errors.Is(err, context.DeadlineExceeded) {
+			return errors.New("failed to connect to Azure Blob Storage. Please check params")
+		}
+		return fmt.Errorf("failed to connect to Azure Blob Storage: %w", err)
+	}
+
+	testBlobName := s.buildBlobName(uuid.New().String() + "-test")
+	testData := []byte("test connection")
+
+	_, err = client.UploadStream(
+		ctx,
+		s.ContainerName,
+		testBlobName,
+		bytes.NewReader(testData),
+		nil,
+	)
+	if err != nil {
+		return fmt.Errorf("failed to upload test blob to Azure: %w", err)
+	}
+
+	_, err = client.DeleteBlob(
+		ctx,
+		s.ContainerName,
+		testBlobName,
+		nil,
+	)
+	if err != nil {
+		return fmt.Errorf("failed to delete test blob from Azure: %w", err)
+	}
+
+	return nil
+}
+
+func (s *AzureBlobStorage) HideSensitiveData() {
+	s.ConnectionString = ""
+	s.AccountKey = ""
+}
+
+func (s *AzureBlobStorage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	var err error
+
+	if s.ConnectionString != "" {
+		s.ConnectionString, err = encryptor.Encrypt(s.StorageID, s.ConnectionString)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt Azure connection string: %w", err)
+		}
+	}
+
+	if s.AccountKey != "" {
+		s.AccountKey, err = encryptor.Encrypt(s.StorageID, s.AccountKey)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt Azure account key: %w", err)
+		}
+	}
+
+	return nil
+}
+
+func (s *AzureBlobStorage) Update(incoming *AzureBlobStorage) {
+	s.AuthMethod = incoming.AuthMethod
+	s.ContainerName = incoming.ContainerName
+	s.Endpoint = incoming.Endpoint
+
+	if incoming.ConnectionString != "" {
+		s.ConnectionString = incoming.ConnectionString
+	}
+
+	if incoming.AccountName != "" {
+		s.AccountName = incoming.AccountName
+	}
+
+	if incoming.AccountKey != "" {
+		s.AccountKey = incoming.AccountKey
+	}
+}
+
+func (s *AzureBlobStorage) buildBlobName(fileName string) string {
+	if s.Prefix == "" {
+		return fileName
+	}
+
+	prefix := s.Prefix
+	prefix = strings.TrimPrefix(prefix, "/")
+
+	if !strings.HasSuffix(prefix, "/") {
+		prefix = prefix + "/"
+	}
+
+	return prefix + fileName
+}
+
+func (s *AzureBlobStorage) getClient(encryptor encryption.FieldEncryptor) (*azblob.Client, error) {
+	var client *azblob.Client
+	var err error
+
+	switch s.AuthMethod {
+	case AuthMethodConnectionString:
+		connectionString, decryptErr := encryptor.Decrypt(s.StorageID, s.ConnectionString)
+		if decryptErr != nil {
+			return nil, fmt.Errorf("failed to decrypt Azure connection string: %w", decryptErr)
+		}
+
+		client, err = azblob.NewClientFromConnectionString(connectionString, nil)
+		if err != nil {
+			return nil, fmt.Errorf(
+				"failed to create Azure Blob client from connection string: %w",
+				err,
+			)
+		}
+	case AuthMethodAccountKey:
+		accountKey, decryptErr := encryptor.Decrypt(s.StorageID, s.AccountKey)
+		if decryptErr != nil {
+			return nil, fmt.Errorf("failed to decrypt Azure account key: %w", decryptErr)
+		}
+
+		accountURL := s.buildAccountURL()
+		credential, credErr := azblob.NewSharedKeyCredential(s.AccountName, accountKey)
+		if credErr != nil {
+			return nil, fmt.Errorf("failed to create Azure shared key credential: %w", credErr)
+		}
+
+		client, err = azblob.NewClientWithSharedKeyCredential(accountURL, credential, nil)
+		if err != nil {
+			return nil, fmt.Errorf("failed to create Azure Blob client with shared key: %w", err)
+		}
+	default:
+		return nil, fmt.Errorf("unsupported auth method: %s", s.AuthMethod)
+	}
+
+	return client, nil
+}
+
+func (s *AzureBlobStorage) buildAccountURL() string {
+	if s.Endpoint != "" {
+		endpoint := s.Endpoint
+		if !strings.HasPrefix(endpoint, "http://") && !strings.HasPrefix(endpoint, "https://") {
+			endpoint = "https://" + endpoint
+		}
+		return endpoint
+	}
+
+	return fmt.Sprintf("https://%s.blob.core.windows.net/", s.AccountName)
+}

backend/internal/features/storages/models/google_drive/model.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"log/slog"
+	"postgresus-backend/internal/util/encryption"
 	"strings"
 	"time"
 
@@ -30,11 +31,12 @@ func (s *GoogleDriveStorage) TableName() string {
 }
 
 func (s *GoogleDriveStorage) SaveFile(
+	encryptor encryption.FieldEncryptor,
 	logger *slog.Logger,
 	fileID uuid.UUID,
 	file io.Reader,
 ) error {
-	return s.withRetryOnAuth(func(driveService *drive.Service) error {
+	return s.withRetryOnAuth(encryptor, func(driveService *drive.Service) error {
 		ctx := context.Background()
 		filename := fileID.String()
 
@@ -68,9 +70,12 @@ func (s *GoogleDriveStorage) SaveFile(
 	})
 }
 
-func (s *GoogleDriveStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
+func (s *GoogleDriveStorage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
 	var result io.ReadCloser
-	err := s.withRetryOnAuth(func(driveService *drive.Service) error {
+	err := s.withRetryOnAuth(encryptor, func(driveService *drive.Service) error {
 		folderID, err := s.findBackupsFolder(driveService)
 		if err != nil {
 			return fmt.Errorf("failed to find backups folder: %w", err)
@@ -93,8 +98,11 @@ func (s *GoogleDriveStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
 	return result, err
 }
 
-func (s *GoogleDriveStorage) DeleteFile(fileID uuid.UUID) error {
-	return s.withRetryOnAuth(func(driveService *drive.Service) error {
+func (s *GoogleDriveStorage) DeleteFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) error {
+	return s.withRetryOnAuth(encryptor, func(driveService *drive.Service) error {
 		ctx := context.Background()
 		folderID, err := s.findBackupsFolder(driveService)
 		if err != nil {
@@ -105,7 +113,7 @@ func (s *GoogleDriveStorage) DeleteFile(fileID uuid.UUID) error {
 	})
 }
 
-func (s *GoogleDriveStorage) Validate() error {
+func (s *GoogleDriveStorage) Validate(encryptor encryption.FieldEncryptor) error {
 	switch {
 	case s.ClientID == "":
 		return errors.New("client ID is required")
@@ -115,7 +123,12 @@ func (s *GoogleDriveStorage) Validate() error {
 		return errors.New("token JSON is required")
 	}
 
-	// Also validate that the token JSON contains a refresh token
+	// Skip JSON validation if token is already encrypted
+	if strings.HasPrefix(s.TokenJSON, "enc:") {
+		return nil
+	}
+
+	// Validate that the token JSON contains a refresh token
 	var token oauth2.Token
 	if err := json.Unmarshal([]byte(s.TokenJSON), &token); err != nil {
 		return fmt.Errorf("invalid token JSON format: %w", err)
@@ -128,8 +141,8 @@ func (s *GoogleDriveStorage) Validate() error {
 	return nil
 }
 
-func (s *GoogleDriveStorage) TestConnection() error {
-	return s.withRetryOnAuth(func(driveService *drive.Service) error {
+func (s *GoogleDriveStorage) TestConnection(encryptor encryption.FieldEncryptor) error {
+	return s.withRetryOnAuth(encryptor, func(driveService *drive.Service) error {
 		ctx := context.Background()
 		testFilename := "test-connection-" + uuid.New().String()
 		testData := []byte("test")
@@ -196,6 +209,26 @@ func (s *GoogleDriveStorage) HideSensitiveData() {
 	s.TokenJSON = ""
 }
 
+func (s *GoogleDriveStorage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	var err error
+
+	if s.ClientSecret != "" {
+		s.ClientSecret, err = encryptor.Encrypt(s.StorageID, s.ClientSecret)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt Google Drive client secret: %w", err)
+		}
+	}
+
+	if s.TokenJSON != "" {
+		s.TokenJSON, err = encryptor.Encrypt(s.StorageID, s.TokenJSON)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt Google Drive token JSON: %w", err)
+		}
+	}
+
+	return nil
+}
+
 func (s *GoogleDriveStorage) Update(incoming *GoogleDriveStorage) {
 	s.ClientID = incoming.ClientID
 
@@ -209,8 +242,11 @@ func (s *GoogleDriveStorage) Update(incoming *GoogleDriveStorage) {
 }
 
 // withRetryOnAuth executes the provided function with retry logic for authentication errors
-func (s *GoogleDriveStorage) withRetryOnAuth(fn func(*drive.Service) error) error {
-	driveService, err := s.getDriveService()
+func (s *GoogleDriveStorage) withRetryOnAuth(
+	encryptor encryption.FieldEncryptor,
+	fn func(*drive.Service) error,
+) error {
+	driveService, err := s.getDriveService(encryptor)
 	if err != nil {
 		return err
 	}
@@ -220,7 +256,7 @@ func (s *GoogleDriveStorage) withRetryOnAuth(fn func(*drive.Service) error) erro
 		// Try to refresh token and retry once
 		fmt.Printf("Google Drive auth error detected, attempting token refresh: %v\n", err)
 
-		if refreshErr := s.refreshToken(); refreshErr != nil {
+		if refreshErr := s.refreshToken(encryptor); refreshErr != nil {
 			// If refresh fails, return a more helpful error message
 			if strings.Contains(refreshErr.Error(), "invalid_grant") ||
 				strings.Contains(refreshErr.Error(), "refresh token") {
@@ -237,7 +273,7 @@ func (s *GoogleDriveStorage) withRetryOnAuth(fn func(*drive.Service) error) erro
 		fmt.Printf("Token refresh successful, retrying operation\n")
 
 		// Get new service with refreshed token
-		driveService, err = s.getDriveService()
+		driveService, err = s.getDriveService(encryptor)
 		if err != nil {
 			return fmt.Errorf("failed to create service after token refresh: %w", err)
 		}
@@ -268,13 +304,24 @@ func (s *GoogleDriveStorage) isAuthError(err error) bool {
 }
 
 // refreshToken refreshes the OAuth2 token and updates the TokenJSON field
-func (s *GoogleDriveStorage) refreshToken() error {
-	if err := s.Validate(); err != nil {
+func (s *GoogleDriveStorage) refreshToken(encryptor encryption.FieldEncryptor) error {
+	if err := s.Validate(encryptor); err != nil {
 		return err
 	}
 
+	// Decrypt credentials before use
+	clientSecret, err := encryptor.Decrypt(s.StorageID, s.ClientSecret)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt Google Drive client secret: %w", err)
+	}
+
+	tokenJSON, err := encryptor.Decrypt(s.StorageID, s.TokenJSON)
+	if err != nil {
+		return fmt.Errorf("failed to decrypt Google Drive token JSON: %w", err)
+	}
+
 	var token oauth2.Token
-	if err := json.Unmarshal([]byte(s.TokenJSON), &token); err != nil {
+	if err := json.Unmarshal([]byte(tokenJSON), &token); err != nil {
 		return fmt.Errorf("invalid token JSON: %w", err)
 	}
 
@@ -289,12 +336,12 @@ func (s *GoogleDriveStorage) refreshToken() error {
 		token.Expiry)
 
 	// Debug: Print the full token JSON structure (sensitive data masked)
-	fmt.Printf("Original token JSON structure: %s\n", maskSensitiveData(s.TokenJSON))
+	fmt.Printf("Original token JSON structure: %s\n", maskSensitiveData(tokenJSON))
 
 	ctx := context.Background()
 	cfg := &oauth2.Config{
 		ClientID:     s.ClientID,
-		ClientSecret: s.ClientSecret,
+		ClientSecret: clientSecret,
 		Endpoint:     google.Endpoint,
 		Scopes:       []string{"https://www.googleapis.com/auth/drive.file"},
 	}
@@ -330,7 +377,7 @@ func (s *GoogleDriveStorage) refreshToken() error {
 		newToken.RefreshToken = token.RefreshToken
 	}
 
-	// Update the stored token JSON
+	// Update the stored token JSON (keep as plaintext in memory, encryption happens on save)
 	newTokenJSON, err := json.Marshal(newToken)
 	if err != nil {
 		return fmt.Errorf("failed to marshal refreshed token: %w", err)
@@ -368,13 +415,26 @@ func truncateString(s string, maxLen int) string {
 	return s[:maxLen]
 }
 
-func (s *GoogleDriveStorage) getDriveService() (*drive.Service, error) {
-	if err := s.Validate(); err != nil {
+func (s *GoogleDriveStorage) getDriveService(
+	encryptor encryption.FieldEncryptor,
+) (*drive.Service, error) {
+	if err := s.Validate(encryptor); err != nil {
 		return nil, err
 	}
 
+	// Decrypt credentials before use
+	clientSecret, err := encryptor.Decrypt(s.StorageID, s.ClientSecret)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decrypt Google Drive client secret: %w", err)
+	}
+
+	tokenJSON, err := encryptor.Decrypt(s.StorageID, s.TokenJSON)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decrypt Google Drive token JSON: %w", err)
+	}
+
 	var token oauth2.Token
-	if err := json.Unmarshal([]byte(s.TokenJSON), &token); err != nil {
+	if err := json.Unmarshal([]byte(tokenJSON), &token); err != nil {
 		return nil, fmt.Errorf("invalid token JSON: %w", err)
 	}
 
@@ -382,7 +442,7 @@ func (s *GoogleDriveStorage) getDriveService() (*drive.Service, error) {
 
 	cfg := &oauth2.Config{
 		ClientID:     s.ClientID,
-		ClientSecret: s.ClientSecret,
+		ClientSecret: clientSecret,
 		Endpoint:     google.Endpoint,
 		Scopes:       []string{"https://www.googleapis.com/auth/drive.file"},
 	}

backend/internal/features/storages/models/local/model.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"path/filepath"
 	"postgresus-backend/internal/config"
+	"postgresus-backend/internal/util/encryption"
 	files_utils "postgresus-backend/internal/util/files"
 
 	"github.com/google/uuid"
@@ -23,7 +24,12 @@ func (l *LocalStorage) TableName() string {
 	return "local_storages"
 }
 
-func (l *LocalStorage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error {
+func (l *LocalStorage) SaveFile(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	fileID uuid.UUID,
+	file io.Reader,
+) error {
 	logger.Info("Starting to save file to local storage", "fileId", fileID.String())
 
 	err := files_utils.EnsureDirectories([]string{
@@ -107,7 +113,10 @@ func (l *LocalStorage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.R
 	return nil
 }
 
-func (l *LocalStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
+func (l *LocalStorage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
 	filePath := filepath.Join(config.GetEnv().DataFolder, fileID.String())
 
 	if _, err := os.Stat(filePath); os.IsNotExist(err) {
@@ -122,7 +131,7 @@ func (l *LocalStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
 	return file, nil
 }
 
-func (l *LocalStorage) DeleteFile(fileID uuid.UUID) error {
+func (l *LocalStorage) DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error {
 	filePath := filepath.Join(config.GetEnv().DataFolder, fileID.String())
 
 	if _, err := os.Stat(filePath); os.IsNotExist(err) {
@@ -136,11 +145,11 @@ func (l *LocalStorage) DeleteFile(fileID uuid.UUID) error {
 	return nil
 }
 
-func (l *LocalStorage) Validate() error {
+func (l *LocalStorage) Validate(encryptor encryption.FieldEncryptor) error {
 	return nil
 }
 
-func (l *LocalStorage) TestConnection() error {
+func (l *LocalStorage) TestConnection(encryptor encryption.FieldEncryptor) error {
 	testFile := filepath.Join(config.GetEnv().TempFolder, "test_connection")
 	f, err := os.Create(testFile)
 	if err != nil {
@@ -160,5 +169,9 @@ func (l *LocalStorage) TestConnection() error {
 func (l *LocalStorage) HideSensitiveData() {
 }
 
+func (l *LocalStorage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	return nil
+}
+
 func (l *LocalStorage) Update(incoming *LocalStorage) {
 }

backend/internal/features/storages/models/nas/model.go

@@ -8,6 +8,7 @@ import (
 	"log/slog"
 	"net"
 	"path/filepath"
+	"postgresus-backend/internal/util/encryption"
 	"strings"
 	"time"
 
@@ -31,10 +32,15 @@ func (n *NASStorage) TableName() string {
 	return "nas_storages"
 }
 
-func (n *NASStorage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error {
+func (n *NASStorage) SaveFile(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	fileID uuid.UUID,
+	file io.Reader,
+) error {
 	logger.Info("Starting to save file to NAS storage", "fileId", fileID.String(), "host", n.Host)
 
-	session, err := n.createSession()
+	session, err := n.createSession(encryptor)
 	if err != nil {
 		logger.Error("Failed to create NAS session", "fileId", fileID.String(), "error", err)
 		return fmt.Errorf("failed to create NAS session: %w", err)
@@ -131,8 +137,11 @@ func (n *NASStorage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Rea
 	return nil
 }
 
-func (n *NASStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
-	session, err := n.createSession()
+func (n *NASStorage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
+	session, err := n.createSession(encryptor)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create NAS session: %w", err)
 	}
@@ -168,8 +177,8 @@ func (n *NASStorage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
 	}, nil
 }
 
-func (n *NASStorage) DeleteFile(fileID uuid.UUID) error {
-	session, err := n.createSession()
+func (n *NASStorage) DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error {
+	session, err := n.createSession(encryptor)
 	if err != nil {
 		return fmt.Errorf("failed to create NAS session: %w", err)
 	}
@@ -202,7 +211,7 @@ func (n *NASStorage) DeleteFile(fileID uuid.UUID) error {
 	return nil
 }
 
-func (n *NASStorage) Validate() error {
+func (n *NASStorage) Validate(encryptor encryption.FieldEncryptor) error {
 	if n.Host == "" {
 		return errors.New("NAS host is required")
 	}
@@ -219,12 +228,11 @@ func (n *NASStorage) Validate() error {
 		return errors.New("NAS port must be between 1 and 65535")
 	}
 
-	// Test the configuration by creating a session
-	return n.TestConnection()
+	return nil
 }
 
-func (n *NASStorage) TestConnection() error {
-	session, err := n.createSession()
+func (n *NASStorage) TestConnection(encryptor encryption.FieldEncryptor) error {
+	session, err := n.createSession(encryptor)
 	if err != nil {
 		return fmt.Errorf("failed to connect to NAS: %w", err)
 	}
@@ -255,6 +263,18 @@ func (n *NASStorage) HideSensitiveData() {
 	n.Password = ""
 }
 
+func (n *NASStorage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	if n.Password != "" {
+		encrypted, err := encryptor.Encrypt(n.StorageID, n.Password)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt NAS password: %w", err)
+		}
+		n.Password = encrypted
+	}
+
+	return nil
+}
+
 func (n *NASStorage) Update(incoming *NASStorage) {
 	n.Host = incoming.Host
 	n.Port = incoming.Port
@@ -269,18 +289,25 @@ func (n *NASStorage) Update(incoming *NASStorage) {
 	}
 }
 
-func (n *NASStorage) createSession() (*smb2.Session, error) {
+func (n *NASStorage) createSession(encryptor encryption.FieldEncryptor) (*smb2.Session, error) {
 	// Create connection with timeout
 	conn, err := n.createConnection()
 	if err != nil {
 		return nil, err
 	}
 
+	// Decrypt password before use
+	password, err := encryptor.Decrypt(n.StorageID, n.Password)
+	if err != nil {
+		_ = conn.Close()
+		return nil, fmt.Errorf("failed to decrypt NAS password: %w", err)
+	}
+
 	// Create SMB2 dialer
 	d := &smb2.Dialer{
 		Initiator: &smb2.NTLMInitiator{
 			User:     n.Username,
-			Password: n.Password,
+			Password: password,
 			Domain:   n.Domain,
 		},
 	}

backend/internal/features/storages/models/s3/model.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"log/slog"
+	"postgresus-backend/internal/util/encryption"
 	"strings"
 	"time"
 
@@ -22,23 +23,33 @@ type S3Storage struct {
 	S3AccessKey string    `json:"s3AccessKey" gorm:"not null;type:text;column:s3_access_key"`
 	S3SecretKey string    `json:"s3SecretKey" gorm:"not null;type:text;column:s3_secret_key"`
 	S3Endpoint  string    `json:"s3Endpoint"  gorm:"type:text;column:s3_endpoint"`
+
+	S3Prefix                string `json:"s3Prefix"                gorm:"type:text;column:s3_prefix"`
+	S3UseVirtualHostedStyle bool   `json:"s3UseVirtualHostedStyle" gorm:"default:false;column:s3_use_virtual_hosted_style"`
 }
 
 func (s *S3Storage) TableName() string {
 	return "s3_storages"
 }
 
-func (s *S3Storage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error {
-	client, err := s.getClient()
+func (s *S3Storage) SaveFile(
+	encryptor encryption.FieldEncryptor,
+	logger *slog.Logger,
+	fileID uuid.UUID,
+	file io.Reader,
+) error {
+	client, err := s.getClient(encryptor)
 	if err != nil {
 		return err
 	}
 
+	objectKey := s.buildObjectKey(fileID.String())
+
 	// Upload the file using MinIO client with streaming (size = -1 for unknown size)
 	_, err = client.PutObject(
 		context.TODO(),
 		s.S3Bucket,
-		fileID.String(),
+		objectKey,
 		file,
 		-1,
 		minio.PutObjectOptions{},
@@ -50,16 +61,21 @@ func (s *S3Storage) SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Read
 	return nil
 }
 
-func (s *S3Storage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
-	client, err := s.getClient()
+func (s *S3Storage) GetFile(
+	encryptor encryption.FieldEncryptor,
+	fileID uuid.UUID,
+) (io.ReadCloser, error) {
+	client, err := s.getClient(encryptor)
 	if err != nil {
 		return nil, err
 	}
 
+	objectKey := s.buildObjectKey(fileID.String())
+
 	object, err := client.GetObject(
 		context.TODO(),
 		s.S3Bucket,
-		fileID.String(),
+		objectKey,
 		minio.GetObjectOptions{},
 	)
 	if err != nil {
@@ -84,17 +100,19 @@ func (s *S3Storage) GetFile(fileID uuid.UUID) (io.ReadCloser, error) {
 	return object, nil
 }
 
-func (s *S3Storage) DeleteFile(fileID uuid.UUID) error {
-	client, err := s.getClient()
+func (s *S3Storage) DeleteFile(encryptor encryption.FieldEncryptor, fileID uuid.UUID) error {
+	client, err := s.getClient(encryptor)
 	if err != nil {
 		return err
 	}
 
+	objectKey := s.buildObjectKey(fileID.String())
+
 	// Delete the object using MinIO client
 	err = client.RemoveObject(
 		context.TODO(),
 		s.S3Bucket,
-		fileID.String(),
+		objectKey,
 		minio.RemoveObjectOptions{},
 	)
 	if err != nil {
@@ -104,7 +122,7 @@ func (s *S3Storage) DeleteFile(fileID uuid.UUID) error {
 	return nil
 }
 
-func (s *S3Storage) Validate() error {
+func (s *S3Storage) Validate(encryptor encryption.FieldEncryptor) error {
 	if s.S3Bucket == "" {
 		return errors.New("S3 bucket is required")
 	}
@@ -115,17 +133,11 @@ func (s *S3Storage) Validate() error {
 		return errors.New("S3 secret key is required")
 	}
 
-	// Try to create a client to validate the configuration
-	_, err := s.getClient()
-	if err != nil {
-		return fmt.Errorf("invalid S3 configuration: %w", err)
-	}
-
 	return nil
 }
 
-func (s *S3Storage) TestConnection() error {
-	client, err := s.getClient()
+func (s *S3Storage) TestConnection(encryptor encryption.FieldEncryptor) error {
+	client, err := s.getClient(encryptor)
 	if err != nil {
 		return err
 	}
@@ -150,6 +162,7 @@ func (s *S3Storage) TestConnection() error {
 
 	// Test write and delete permissions by uploading and removing a small test file
 	testFileID := uuid.New().String() + "-test"
+	testObjectKey := s.buildObjectKey(testFileID)
 	testData := []byte("test connection")
 	testReader := bytes.NewReader(testData)
 
@@ -157,7 +170,7 @@ func (s *S3Storage) TestConnection() error {
 	_, err = client.PutObject(
 		ctx,
 		s.S3Bucket,
-		testFileID,
+		testObjectKey,
 		testReader,
 		int64(len(testData)),
 		minio.PutObjectOptions{},
@@ -170,7 +183,7 @@ func (s *S3Storage) TestConnection() error {
 	err = client.RemoveObject(
 		ctx,
 		s.S3Bucket,
-		testFileID,
+		testObjectKey,
 		minio.RemoveObjectOptions{},
 	)
 	if err != nil {
@@ -185,10 +198,31 @@ func (s *S3Storage) HideSensitiveData() {
 	s.S3SecretKey = ""
 }
 
+func (s *S3Storage) EncryptSensitiveData(encryptor encryption.FieldEncryptor) error {
+	var err error
+
+	if s.S3AccessKey != "" {
+		s.S3AccessKey, err = encryptor.Encrypt(s.StorageID, s.S3AccessKey)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt S3 access key: %w", err)
+		}
+	}
+
+	if s.S3SecretKey != "" {
+		s.S3SecretKey, err = encryptor.Encrypt(s.StorageID, s.S3SecretKey)
+		if err != nil {
+			return fmt.Errorf("failed to encrypt S3 secret key: %w", err)
+		}
+	}
+
+	return nil
+}
+
 func (s *S3Storage) Update(incoming *S3Storage) {
 	s.S3Bucket = incoming.S3Bucket
 	s.S3Region = incoming.S3Region
 	s.S3Endpoint = incoming.S3Endpoint
+	s.S3UseVirtualHostedStyle = incoming.S3UseVirtualHostedStyle
 
 	if incoming.S3AccessKey != "" {
 		s.S3AccessKey = incoming.S3AccessKey
@@ -197,9 +231,27 @@ func (s *S3Storage) Update(incoming *S3Storage) {
 	if incoming.S3SecretKey != "" {
 		s.S3SecretKey = incoming.S3SecretKey
 	}
+
+	// we do not allow to change the prefix after creation,
+	// otherwise we will have to migrate all the data to the new prefix
 }
 
-func (s *S3Storage) getClient() (*minio.Client, error) {
+func (s *S3Storage) buildObjectKey(fileName string) string {
+	if s.S3Prefix == "" {
+		return fileName
+	}
+
+	prefix := s.S3Prefix
+	prefix = strings.TrimPrefix(prefix, "/")
+
+	if !strings.HasSuffix(prefix, "/") {
+		prefix = prefix + "/"
+	}
+
+	return prefix + fileName
+}
+
+func (s *S3Storage) getClient(encryptor encryption.FieldEncryptor) (*minio.Client, error) {
 	endpoint := s.S3Endpoint
 	useSSL := true
 
@@ -215,11 +267,29 @@ func (s *S3Storage) getClient() (*minio.Client, error) {
 		endpoint = fmt.Sprintf("s3.%s.amazonaws.com", s.S3Region)
 	}
 
+	// Decrypt credentials before use
+	accessKey, err := encryptor.Decrypt(s.StorageID, s.S3AccessKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decrypt S3 access key: %w", err)
+	}
+
+	secretKey, err := encryptor.Decrypt(s.StorageID, s.S3SecretKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decrypt S3 secret key: %w", err)
+	}
+
+	// Configure bucket lookup strategy
+	bucketLookup := minio.BucketLookupAuto
+	if s.S3UseVirtualHostedStyle {
+		bucketLookup = minio.BucketLookupDNS
+	}
+
 	// Initialize the MinIO client
 	minioClient, err := minio.New(endpoint, &minio.Options{
-		Creds:  credentials.NewStaticV4(s.S3AccessKey, s.S3SecretKey, ""),
-		Secure: useSSL,
-		Region: s.S3Region,
+		Creds:        credentials.NewStaticV4(accessKey, secretKey, ""),
+		Secure:       useSSL,
+		Region:       s.S3Region,
+		BucketLookup: bucketLookup,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("failed to initialize MinIO client: %w", err)

backend/internal/features/storages/repository.go

@@ -30,17 +30,21 @@ func (r *StorageRepository) Save(storage *Storage) (*Storage, error) {
 			if storage.NASStorage != nil {
 				storage.NASStorage.StorageID = storage.ID
 			}
+		case StorageTypeAzureBlob:
+			if storage.AzureBlobStorage != nil {
+				storage.AzureBlobStorage.StorageID = storage.ID
+			}
 		}
 
 		if storage.ID == uuid.Nil {
 			if err := tx.Create(storage).
-				Omit("LocalStorage", "S3Storage", "GoogleDriveStorage", "NASStorage").
+				Omit("LocalStorage", "S3Storage", "GoogleDriveStorage", "NASStorage", "AzureBlobStorage").
 				Error; err != nil {
 				return err
 			}
 		} else {
 			if err := tx.Save(storage).
-				Omit("LocalStorage", "S3Storage", "GoogleDriveStorage", "NASStorage").
+				Omit("LocalStorage", "S3Storage", "GoogleDriveStorage", "NASStorage", "AzureBlobStorage").
 				Error; err != nil {
 				return err
 			}
@@ -75,6 +79,13 @@ func (r *StorageRepository) Save(storage *Storage) (*Storage, error) {
 					return err
 				}
 			}
+		case StorageTypeAzureBlob:
+			if storage.AzureBlobStorage != nil {
+				storage.AzureBlobStorage.StorageID = storage.ID // Ensure ID is set
+				if err := tx.Save(storage.AzureBlobStorage).Error; err != nil {
+					return err
+				}
+			}
 		}
 
 		return nil
@@ -96,6 +107,7 @@ func (r *StorageRepository) FindByID(id uuid.UUID) (*Storage, error) {
 		Preload("S3Storage").
 		Preload("GoogleDriveStorage").
 		Preload("NASStorage").
+		Preload("AzureBlobStorage").
 		Where("id = ?", id).
 		First(&s).Error; err != nil {
 		return nil, err
@@ -113,6 +125,7 @@ func (r *StorageRepository) FindByWorkspaceID(workspaceID uuid.UUID) ([]*Storage
 		Preload("S3Storage").
 		Preload("GoogleDriveStorage").
 		Preload("NASStorage").
+		Preload("AzureBlobStorage").
 		Where("workspace_id = ?", workspaceID).
 		Order("name ASC").
 		Find(&storages).Error; err != nil {
@@ -150,6 +163,12 @@ func (r *StorageRepository) Delete(s *Storage) error {
 					return err
 				}
 			}
+		case StorageTypeAzureBlob:
+			if s.AzureBlobStorage != nil {
+				if err := tx.Delete(s.AzureBlobStorage).Error; err != nil {
+					return err
+				}
+			}
 		}
 
 		// Delete the main storage

backend/internal/features/storages/service.go

@@ -7,6 +7,7 @@ import (
 	audit_logs "postgresus-backend/internal/features/audit_logs"
 	users_models "postgresus-backend/internal/features/users/models"
 	workspaces_services "postgresus-backend/internal/features/workspaces/services"
+	"postgresus-backend/internal/util/encryption"
 
 	"github.com/google/uuid"
 )
@@ -15,6 +16,7 @@ type StorageService struct {
 	storageRepository *StorageRepository
 	workspaceService  *workspaces_services.WorkspaceService
 	auditLogService   *audit_logs.AuditLogService
+	fieldEncryptor    encryption.FieldEncryptor
 }
 
 func (s *StorageService) SaveStorage(
@@ -44,7 +46,11 @@ func (s *StorageService) SaveStorage(
 
 		existingStorage.Update(storage)
 
-		if err := existingStorage.Validate(); err != nil {
+		if err := existingStorage.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
+		if err := existingStorage.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
@@ -61,7 +67,11 @@ func (s *StorageService) SaveStorage(
 	} else {
 		storage.WorkspaceID = workspaceID
 
-		if err := storage.Validate(); err != nil {
+		if err := storage.EncryptSensitiveData(s.fieldEncryptor); err != nil {
+			return err
+		}
+
+		if err := storage.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
@@ -174,7 +184,7 @@ func (s *StorageService) TestStorageConnection(
 		return errors.New("insufficient permissions to test storage in this workspace")
 	}
 
-	err = storage.TestConnection()
+	err = storage.TestConnection(s.fieldEncryptor)
 	if err != nil {
 		lastSaveError := err.Error()
 		storage.LastSaveError = &lastSaveError
@@ -207,7 +217,7 @@ func (s *StorageService) TestStorageConnectionDirect(
 
 		existingStorage.Update(storage)
 
-		if err := existingStorage.Validate(); err != nil {
+		if err := existingStorage.Validate(s.fieldEncryptor); err != nil {
 			return err
 		}
 
@@ -216,7 +226,7 @@ func (s *StorageService) TestStorageConnectionDirect(
 		usingStorage = storage
 	}
 
-	return usingStorage.TestConnection()
+	return usingStorage.TestConnection(s.fieldEncryptor)
 }
 
 func (s *StorageService) GetStorageByID(

backend/internal/features/tests/postgresql_backup_restore_test.go

@@ -1,31 +1,36 @@
 package tests
 
 import (
-	"context"
+	"encoding/json"
 	"fmt"
+	"net/http"
 	"os"
 	"path/filepath"
-	"postgresus-backend/internal/config"
-	"postgresus-backend/internal/features/backups/backups"
-	usecases_postgresql_backup "postgresus-backend/internal/features/backups/backups/usecases/postgresql"
-	backups_config "postgresus-backend/internal/features/backups/config"
-	"postgresus-backend/internal/features/databases"
-	pgtypes "postgresus-backend/internal/features/databases/databases/postgresql"
-	"postgresus-backend/internal/features/intervals"
-	"postgresus-backend/internal/features/restores/models"
-	usecases_postgresql_restore "postgresus-backend/internal/features/restores/usecases/postgresql"
-	"postgresus-backend/internal/features/storages"
-	local_storage "postgresus-backend/internal/features/storages/models/local"
-	"postgresus-backend/internal/util/period"
-	"postgresus-backend/internal/util/tools"
 	"strconv"
 	"testing"
 	"time"
 
+	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
 	"github.com/stretchr/testify/assert"
+
+	"postgresus-backend/internal/config"
+	"postgresus-backend/internal/features/backups/backups"
+	backups_config "postgresus-backend/internal/features/backups/config"
+	"postgresus-backend/internal/features/databases"
+	pgtypes "postgresus-backend/internal/features/databases/databases/postgresql"
+	"postgresus-backend/internal/features/restores"
+	restores_enums "postgresus-backend/internal/features/restores/enums"
+	restores_models "postgresus-backend/internal/features/restores/models"
+	"postgresus-backend/internal/features/storages"
+	users_enums "postgresus-backend/internal/features/users/enums"
+	users_testing "postgresus-backend/internal/features/users/testing"
+	workspaces_controllers "postgresus-backend/internal/features/workspaces/controllers"
+	workspaces_testing "postgresus-backend/internal/features/workspaces/testing"
+	test_utils "postgresus-backend/internal/util/testing"
+	"postgresus-backend/internal/util/tools"
 )
 
 const createAndFillTableQuery = `
@@ -61,7 +66,6 @@ type TestDataItem struct {
 	CreatedAt time.Time `db:"created_at"`
 }
 
-// Main test functions for each PostgreSQL version
 func Test_BackupAndRestorePostgresql_RestoreIsSuccesful(t *testing.T) {
 	env := config.GetEnv()
 	cases := []struct {
@@ -69,6 +73,7 @@ func Test_BackupAndRestorePostgresql_RestoreIsSuccesful(t *testing.T) {
 		version string
 		port    string
 	}{
+		{"PostgreSQL 12", "12", env.TestPostgres12Port},
 		{"PostgreSQL 13", "13", env.TestPostgres13Port},
 		{"PostgreSQL 14", "14", env.TestPostgres14Port},
 		{"PostgreSQL 15", "15", env.TestPostgres15Port},
@@ -78,17 +83,38 @@ func Test_BackupAndRestorePostgresql_RestoreIsSuccesful(t *testing.T) {
 	}
 
 	for _, tc := range cases {
-		tc := tc // capture loop variable
 		t.Run(tc.name, func(t *testing.T) {
-			t.Parallel() // Enable parallel execution
+			t.Parallel()
 			testBackupRestoreForVersion(t, tc.version, tc.port)
 		})
 	}
 }
 
-// Run a test for a specific PostgreSQL version
+func Test_BackupAndRestorePostgresqlWithEncryption_RestoreIsSuccessful(t *testing.T) {
+	env := config.GetEnv()
+	cases := []struct {
+		name    string
+		version string
+		port    string
+	}{
+		{"PostgreSQL 12", "12", env.TestPostgres12Port},
+		{"PostgreSQL 13", "13", env.TestPostgres13Port},
+		{"PostgreSQL 14", "14", env.TestPostgres14Port},
+		{"PostgreSQL 15", "15", env.TestPostgres15Port},
+		{"PostgreSQL 16", "16", env.TestPostgres16Port},
+		{"PostgreSQL 17", "17", env.TestPostgres17Port},
+		{"PostgreSQL 18", "18", env.TestPostgres18Port},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			testBackupRestoreWithEncryptionForVersion(t, tc.version, tc.port)
+		})
+	}
+}
+
 func testBackupRestoreForVersion(t *testing.T, pgVersion string, port string) {
-	// Connect to pre-configured PostgreSQL container
 	container, err := connectToPostgresContainer(pgVersion, port)
 	assert.NoError(t, err)
 	defer func() {
@@ -100,55 +126,30 @@ func testBackupRestoreForVersion(t *testing.T, pgVersion string, port string) {
 	_, err = container.DB.Exec(createAndFillTableQuery)
 	assert.NoError(t, err)
 
-	// Prepare data for backup
-	backupID := uuid.New()
+	router := createTestRouter()
+	user := users_testing.CreateTestUser(users_enums.UserRoleMember)
+	workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", user, router)
+
+	storage := storages.CreateTestStorage(workspace.ID)
+
 	pgVersionEnum := tools.GetPostgresqlVersionEnum(pgVersion)
-
-	backupDb := &databases.Database{
-		ID:   uuid.New(),
-		Type: databases.DatabaseTypePostgres,
-		Name: "Test Database",
-		Postgresql: &pgtypes.PostgresqlDatabase{
-			Version:  pgVersionEnum,
-			Host:     container.Host,
-			Port:     container.Port,
-			Username: container.Username,
-			Password: container.Password,
-			Database: &container.Database,
-			IsHttps:  false,
-		},
-	}
-
-	storageID := uuid.New()
-	backupConfig := &backups_config.BackupConfig{
-		DatabaseID:       backupDb.ID,
-		IsBackupsEnabled: true,
-		StorePeriod:      period.PeriodDay,
-		BackupInterval:   &intervals.Interval{Interval: intervals.IntervalDaily},
-		StorageID:        &storageID,
-		CpuCount:         1,
-	}
-
-	storage := &storages.Storage{
-		WorkspaceID:  uuid.New(),
-		Type:         storages.StorageTypeLocal,
-		Name:         "Test Storage",
-		LocalStorage: &local_storage.LocalStorage{},
-	}
-
-	// Make backup
-	progressTracker := func(completedMBs float64) {}
-	err = usecases_postgresql_backup.GetCreatePostgresqlBackupUsecase().Execute(
-		context.Background(),
-		backupID,
-		backupConfig,
-		backupDb,
-		storage,
-		progressTracker,
+	database := createDatabaseViaAPI(
+		t, router, "Test Database", workspace.ID,
+		pgVersionEnum, container.Host, container.Port,
+		container.Username, container.Password, container.Database,
+		user.Token,
 	)
-	assert.NoError(t, err)
 
-	// Create new database
+	enableBackupsViaAPI(
+		t, router, database.ID, storage.ID,
+		backups_config.BackupEncryptionNone, user.Token,
+	)
+
+	createBackupViaAPI(t, router, database.ID, user.Token)
+
+	backup := waitForBackupCompletion(t, router, database.ID, user.Token, 5*time.Minute)
+	assert.Equal(t, backups.BackupStatusCompleted, backup.Status)
+
 	newDBName := "restoreddb"
 	_, err = container.DB.Exec(fmt.Sprintf("DROP DATABASE IF EXISTS %s;", newDBName))
 	assert.NoError(t, err)
@@ -156,45 +157,22 @@ func testBackupRestoreForVersion(t *testing.T, pgVersion string, port string) {
 	_, err = container.DB.Exec(fmt.Sprintf("CREATE DATABASE %s;", newDBName))
 	assert.NoError(t, err)
 
-	// Connect to the new database
 	newDSN := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
 		container.Host, container.Port, container.Username, container.Password, newDBName)
 	newDB, err := sqlx.Connect("postgres", newDSN)
 	assert.NoError(t, err)
 	defer newDB.Close()
 
-	// Setup data for restore
-	completedBackup := &backups.Backup{
-		ID:         backupID,
-		DatabaseID: backupDb.ID,
-		StorageID:  storage.ID,
-		Status:     backups.BackupStatusCompleted,
-		CreatedAt:  time.Now().UTC(),
-		Storage:    storage,
-		Database:   backupDb,
-	}
+	createRestoreViaAPI(
+		t, router, backup.ID, pgVersionEnum,
+		container.Host, container.Port,
+		container.Username, container.Password, newDBName,
+		user.Token,
+	)
 
-	restoreID := uuid.New()
-	restore := models.Restore{
-		ID:     restoreID,
-		Backup: completedBackup,
-		Postgresql: &pgtypes.PostgresqlDatabase{
-			Version:  pgVersionEnum,
-			Host:     container.Host,
-			Port:     container.Port,
-			Username: container.Username,
-			Password: container.Password,
-			Database: &newDBName,
-			IsHttps:  false,
-		},
-	}
+	restore := waitForRestoreCompletion(t, router, backup.ID, user.Token, 5*time.Minute)
+	assert.Equal(t, restores_enums.RestoreStatusCompleted, restore.Status)
 
-	// Restore the backup
-	restoreBackupUC := usecases_postgresql_restore.GetRestorePostgresqlBackupUsecase()
-	err = restoreBackupUC.Execute(backupConfig, restore, completedBackup, storage)
-	assert.NoError(t, err)
-
-	// Verify restored table exists
 	var tableExists bool
 	err = newDB.Get(
 		&tableExists,
@@ -203,17 +181,329 @@ func testBackupRestoreForVersion(t *testing.T, pgVersion string, port string) {
 	assert.NoError(t, err)
 	assert.True(t, tableExists, "Table 'test_data' should exist in restored database")
 
-	// Verify data integrity
 	verifyDataIntegrity(t, container.DB, newDB)
 
-	// Clean up the backup file after the test
-	err = os.Remove(filepath.Join(config.GetEnv().DataFolder, backupID.String()))
+	err = os.Remove(filepath.Join(config.GetEnv().DataFolder, backup.ID.String()))
 	if err != nil {
 		t.Logf("Warning: Failed to delete backup file: %v", err)
 	}
+
+	test_utils.MakeDeleteRequest(
+		t,
+		router,
+		"/api/v1/databases/"+database.ID.String(),
+		"Bearer "+user.Token,
+		http.StatusNoContent,
+	)
+	storages.RemoveTestStorage(storage.ID)
+	workspaces_testing.RemoveTestWorkspace(workspace, router)
+}
+
+func testBackupRestoreWithEncryptionForVersion(t *testing.T, pgVersion string, port string) {
+	container, err := connectToPostgresContainer(pgVersion, port)
+	assert.NoError(t, err)
+	defer func() {
+		if container.DB != nil {
+			container.DB.Close()
+		}
+	}()
+
+	_, err = container.DB.Exec(createAndFillTableQuery)
+	assert.NoError(t, err)
+
+	router := createTestRouter()
+	user := users_testing.CreateTestUser(users_enums.UserRoleMember)
+	workspace := workspaces_testing.CreateTestWorkspace("Test Workspace", user, router)
+
+	storage := storages.CreateTestStorage(workspace.ID)
+
+	pgVersionEnum := tools.GetPostgresqlVersionEnum(pgVersion)
+	database := createDatabaseViaAPI(
+		t, router, "Test Database", workspace.ID,
+		pgVersionEnum, container.Host, container.Port,
+		container.Username, container.Password, container.Database,
+		user.Token,
+	)
+
+	enableBackupsViaAPI(
+		t, router, database.ID, storage.ID,
+		backups_config.BackupEncryptionEncrypted, user.Token,
+	)
+
+	createBackupViaAPI(t, router, database.ID, user.Token)
+
+	backup := waitForBackupCompletion(t, router, database.ID, user.Token, 5*time.Minute)
+	assert.Equal(t, backups.BackupStatusCompleted, backup.Status)
+	assert.Equal(t, backups_config.BackupEncryptionEncrypted, backup.Encryption)
+
+	newDBName := "restoreddb_encrypted"
+	_, err = container.DB.Exec(fmt.Sprintf("DROP DATABASE IF EXISTS %s;", newDBName))
+	assert.NoError(t, err)
+
+	_, err = container.DB.Exec(fmt.Sprintf("CREATE DATABASE %s;", newDBName))
+	assert.NoError(t, err)
+
+	newDSN := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
+		container.Host, container.Port, container.Username, container.Password, newDBName)
+	newDB, err := sqlx.Connect("postgres", newDSN)
+	assert.NoError(t, err)
+	defer newDB.Close()
+
+	createRestoreViaAPI(
+		t, router, backup.ID, pgVersionEnum,
+		container.Host, container.Port,
+		container.Username, container.Password, newDBName,
+		user.Token,
+	)
+
+	restore := waitForRestoreCompletion(t, router, backup.ID, user.Token, 5*time.Minute)
+	assert.Equal(t, restores_enums.RestoreStatusCompleted, restore.Status)
+
+	var tableExists bool
+	err = newDB.Get(
+		&tableExists,
+		"SELECT EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'test_data')",
+	)
+	assert.NoError(t, err)
+	assert.True(t, tableExists, "Table 'test_data' should exist in restored database")
+
+	verifyDataIntegrity(t, container.DB, newDB)
+
+	err = os.Remove(filepath.Join(config.GetEnv().DataFolder, backup.ID.String()))
+	if err != nil {
+		t.Logf("Warning: Failed to delete backup file: %v", err)
+	}
+
+	test_utils.MakeDeleteRequest(
+		t,
+		router,
+		"/api/v1/databases/"+database.ID.String(),
+		"Bearer "+user.Token,
+		http.StatusNoContent,
+	)
+	storages.RemoveTestStorage(storage.ID)
+	workspaces_testing.RemoveTestWorkspace(workspace, router)
+}
+
+func createTestRouter() *gin.Engine {
+	router := workspaces_testing.CreateTestRouter(
+		workspaces_controllers.GetWorkspaceController(),
+		workspaces_controllers.GetMembershipController(),
+		databases.GetDatabaseController(),
+		backups_config.GetBackupConfigController(),
+		backups.GetBackupController(),
+		restores.GetRestoreController(),
+	)
+	return router
+}
+
+func waitForBackupCompletion(
+	t *testing.T,
+	router *gin.Engine,
+	databaseID uuid.UUID,
+	token string,
+	timeout time.Duration,
+) *backups.Backup {
+	startTime := time.Now()
+	pollInterval := 500 * time.Millisecond
+
+	for {
+		if time.Since(startTime) > timeout {
+			t.Fatalf("Timeout waiting for backup completion after %v", timeout)
+		}
+
+		var response backups.GetBackupsResponse
+		test_utils.MakeGetRequestAndUnmarshal(
+			t,
+			router,
+			fmt.Sprintf("/api/v1/backups?database_id=%s&limit=1", databaseID.String()),
+			"Bearer "+token,
+			http.StatusOK,
+			&response,
+		)
+
+		if len(response.Backups) > 0 {
+			backup := response.Backups[0]
+			if backup.Status == backups.BackupStatusCompleted {
+				return backup
+			}
+			if backup.Status == backups.BackupStatusFailed {
+				t.Fatalf("Backup failed: %v", backup.FailMessage)
+			}
+		}
+
+		time.Sleep(pollInterval)
+	}
+}
+
+func waitForRestoreCompletion(
+	t *testing.T,
+	router *gin.Engine,
+	backupID uuid.UUID,
+	token string,
+	timeout time.Duration,
+) *restores_models.Restore {
+	startTime := time.Now()
+	pollInterval := 500 * time.Millisecond
+
+	for {
+		if time.Since(startTime) > timeout {
+			t.Fatalf("Timeout waiting for restore completion after %v", timeout)
+		}
+
+		var restores []*restores_models.Restore
+		test_utils.MakeGetRequestAndUnmarshal(
+			t,
+			router,
+			fmt.Sprintf("/api/v1/restores/%s", backupID.String()),
+			"Bearer "+token,
+			http.StatusOK,
+			&restores,
+		)
+
+		for _, restore := range restores {
+			if restore.Status == restores_enums.RestoreStatusCompleted {
+				return restore
+			}
+			if restore.Status == restores_enums.RestoreStatusFailed {
+				t.Fatalf("Restore failed: %v", restore.FailMessage)
+			}
+		}
+
+		time.Sleep(pollInterval)
+	}
+}
+
+func createDatabaseViaAPI(
+	t *testing.T,
+	router *gin.Engine,
+	name string,
+	workspaceID uuid.UUID,
+	pgVersion tools.PostgresqlVersion,
+	host string,
+	port int,
+	username string,
+	password string,
+	database string,
+	token string,
+) *databases.Database {
+	request := databases.Database{
+		Name:        name,
+		WorkspaceID: &workspaceID,
+		Type:        databases.DatabaseTypePostgres,
+		Postgresql: &pgtypes.PostgresqlDatabase{
+			Version:  pgVersion,
+			Host:     host,
+			Port:     port,
+			Username: username,
+			Password: password,
+			Database: &database,
+		},
+	}
+
+	w := workspaces_testing.MakeAPIRequest(
+		router,
+		"POST",
+		"/api/v1/databases/create",
+		"Bearer "+token,
+		request,
+	)
+
+	if w.Code != http.StatusCreated {
+		t.Fatalf("Failed to create database. Status: %d, Body: %s", w.Code, w.Body.String())
+	}
+
+	var createdDatabase databases.Database
+	if err := json.Unmarshal(w.Body.Bytes(), &createdDatabase); err != nil {
+		t.Fatalf("Failed to unmarshal database response: %v", err)
+	}
+
+	return &createdDatabase
+}
+
+func enableBackupsViaAPI(
+	t *testing.T,
+	router *gin.Engine,
+	databaseID uuid.UUID,
+	storageID uuid.UUID,
+	encryption backups_config.BackupEncryption,
+	token string,
+) {
+	var backupConfig backups_config.BackupConfig
+	test_utils.MakeGetRequestAndUnmarshal(
+		t,
+		router,
+		fmt.Sprintf("/api/v1/backup-configs/database/%s", databaseID.String()),
+		"Bearer "+token,
+		http.StatusOK,
+		&backupConfig,
+	)
+
+	storage := &storages.Storage{ID: storageID}
+	backupConfig.IsBackupsEnabled = true
+	backupConfig.Storage = storage
+	backupConfig.Encryption = encryption
+
+	test_utils.MakePostRequest(
+		t,
+		router,
+		"/api/v1/backup-configs/save",
+		"Bearer "+token,
+		backupConfig,
+		http.StatusOK,
+	)
+}
+
+func createBackupViaAPI(
+	t *testing.T,
+	router *gin.Engine,
+	databaseID uuid.UUID,
+	token string,
+) {
+	request := backups.MakeBackupRequest{DatabaseID: databaseID}
+	test_utils.MakePostRequest(
+		t,
+		router,
+		"/api/v1/backups",
+		"Bearer "+token,
+		request,
+		http.StatusOK,
+	)
+}
+
+func createRestoreViaAPI(
+	t *testing.T,
+	router *gin.Engine,
+	backupID uuid.UUID,
+	pgVersion tools.PostgresqlVersion,
+	host string,
+	port int,
+	username string,
+	password string,
+	database string,
+	token string,
+) {
+	request := restores.RestoreBackupRequest{
+		PostgresqlDatabase: &pgtypes.PostgresqlDatabase{
+			Version:  pgVersion,
+			Host:     host,
+			Port:     port,
+			Username: username,
+			Password: password,
+			Database: &database,
+		},
+	}
+
+	test_utils.MakePostRequest(
+		t,
+		router,
+		fmt.Sprintf("/api/v1/restores/%s/restore", backupID.String()),
+		"Bearer "+token,
+		request,
+		http.StatusOK,
+	)
 }
 
-// verifyDataIntegrity compares data in the original and restored databases
 func verifyDataIntegrity(t *testing.T, originalDB *sqlx.DB, restoredDB *sqlx.DB) {
 	var originalData []TestDataItem
 	var restoredData []TestDataItem
@@ -226,7 +516,6 @@ func verifyDataIntegrity(t *testing.T, originalDB *sqlx.DB, restoredDB *sqlx.DB)
 
 	assert.Equal(t, len(originalData), len(restoredData), "Should have same number of rows")
 
-	// Only compare data if both slices have elements (to avoid panic)
 	if len(originalData) > 0 && len(restoredData) > 0 {
 		for i := range originalData {
 			assert.Equal(t, originalData[i].ID, restoredData[i].ID, "ID should match")

backend/internal/features/users/models/secret_key.go

@@ -1,7 +1,7 @@
 package users_models
 
 type SecretKey struct {
-	Secret string `gorm:"column:secret"`
+	Secret string `gorm:"column:secret" json:"-"`
 }
 
 func (SecretKey) TableName() string {

backend/internal/features/users/repositories/di.go

@@ -0,0 +1,17 @@
+package users_repositories
+
+var secretKeyRepository = &SecretKeyRepository{}
+var userRepository = &UserRepository{}
+var usersSettingsRepository = &UsersSettingsRepository{}
+
+func GetSecretKeyRepository() *SecretKeyRepository {
+	return secretKeyRepository
+}
+
+func GetUserRepository() *UserRepository {
+	return userRepository
+}
+
+func GetUsersSettingsRepository() *UsersSettingsRepository {
+	return usersSettingsRepository
+}

backend/internal/features/users/repositories/secret_key_repository.go

@@ -14,9 +14,7 @@ type SecretKeyRepository struct{}
 func (r *SecretKeyRepository) GetSecretKey() (string, error) {
 	var secretKey user_models.SecretKey
 
-	if err := storage.
-		GetDb().
-		First(&secretKey).Error; err != nil {
+	if err := storage.GetDb().First(&secretKey).Error; err != nil {
 		// create a new secret key if not found
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			newSecretKey := user_models.SecretKey{

backend/internal/features/users/services/di.go

@@ -1,25 +1,19 @@
 package users_services
 
-import (
-	user_repositories "postgresus-backend/internal/features/users/repositories"
-)
-
-var secretKeyRepository = &user_repositories.SecretKeyRepository{}
-var userRepository = &user_repositories.UserRepository{}
-var usersSettingsRepository = &user_repositories.UsersSettingsRepository{}
+import users_repositories "postgresus-backend/internal/features/users/repositories"
 
 var userService = &UserService{
-	userRepository,
-	secretKeyRepository,
+	users_repositories.GetUserRepository(),
+	users_repositories.GetSecretKeyRepository(),
 	settingsService,
 	nil,
 }
 var settingsService = &SettingsService{
-	usersSettingsRepository,
+	users_repositories.GetUsersSettingsRepository(),
 	nil,
 }
 var managementService = &UserManagementService{
-	userRepository,
+	users_repositories.GetUserRepository(),
 	nil,
 }
 

backend/internal/features/users/services/user_services.go

@@ -309,15 +309,6 @@ func (s *UserService) ChangeUserPasswordByEmail(email string, newPassword string
 }
 
 func (s *UserService) ChangeUserPassword(userID uuid.UUID, newPassword string) error {
-	user, err := s.userRepository.GetUserByID(userID)
-	if err != nil {
-		return fmt.Errorf("failed to get user: %w", err)
-	}
-
-	if !user.HasPassword() {
-		return errors.New("user has no password set")
-	}
-
 	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(newPassword), bcrypt.DefaultCost)
 	if err != nil {
 		return fmt.Errorf("failed to hash new password: %w", err)

backend/internal/features/workspaces/services/workspace_service.go

@@ -309,7 +309,7 @@ func (s *WorkspaceService) GetAllWorkspaces() ([]*workspaces_models.Workspace, e
 	return s.workspaceRepository.GetAllWorkspaces()
 }
 
-func (s *WorkspaceService) GetWorkspaceByIDInternal(
+func (s *WorkspaceService) GetWorkspaceByID(
 	workspaceID uuid.UUID,
 ) (*workspaces_models.Workspace, error) {
 	return s.workspaceRepository.GetWorkspaceByID(workspaceID)

backend/internal/util/encryption/di.go

@@ -0,0 +1,11 @@
+package encryption
+
+import users_repositories "postgresus-backend/internal/features/users/repositories"
+
+var fieldEncryptor = &SecretKeyFieldEncryptor{
+	users_repositories.GetSecretKeyRepository(),
+}
+
+func GetFieldEncryptor() FieldEncryptor {
+	return fieldEncryptor
+}

backend/internal/util/encryption/field_encryptor.go

@@ -0,0 +1,15 @@
+package encryption
+
+import "github.com/google/uuid"
+
+type FieldEncryptor interface {
+	// Encrypt encrypts a plaintext string and returns an encrypted string.
+	// If the string is already encrypted, returns it as-is.
+	// Empty strings are returned unchanged.
+	Encrypt(itemID uuid.UUID, plaintext string) (string, error)
+
+	// Decrypt decrypts an encrypted string and returns a plaintext string.
+	// If the string is not encrypted, returns it as-is.
+	// Empty strings are returned unchanged.
+	Decrypt(itemID uuid.UUID, ciphertext string) (string, error)
+}

backend/internal/util/encryption/secret_key_field_encryptor.go

@@ -0,0 +1,121 @@
+package encryption
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"strings"
+
+	users_repositories "postgresus-backend/internal/features/users/repositories"
+
+	"github.com/google/uuid"
+)
+
+const encryptedPrefix = "enc:"
+
+type SecretKeyFieldEncryptor struct {
+	secretKeyRepository *users_repositories.SecretKeyRepository
+}
+
+func (e *SecretKeyFieldEncryptor) Encrypt(itemID uuid.UUID, plaintext string) (string, error) {
+	if plaintext == "" {
+		return "", nil
+	}
+
+	if e.isEncrypted(plaintext) {
+		return plaintext, nil
+	}
+
+	masterKey, err := e.secretKeyRepository.GetSecretKey()
+	if err != nil {
+		return "", fmt.Errorf("failed to get master key: %w", err)
+	}
+
+	block, err := aes.NewCipher([]byte(masterKey)[:32])
+	if err != nil {
+		return "", fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	nonce := e.deriveNonce(itemID, masterKey, gcm.NonceSize())
+
+	ciphertext := gcm.Seal(nil, nonce, []byte(plaintext), nil)
+
+	nonceBase64 := base64.StdEncoding.EncodeToString(nonce)
+	ciphertextBase64 := base64.StdEncoding.EncodeToString(ciphertext)
+
+	return fmt.Sprintf("%s%s:%s", encryptedPrefix, nonceBase64, ciphertextBase64), nil
+}
+
+func (e *SecretKeyFieldEncryptor) Decrypt(itemID uuid.UUID, ciphertext string) (string, error) {
+	if ciphertext == "" {
+		return "", nil
+	}
+
+	if !e.isEncrypted(ciphertext) {
+		return ciphertext, nil
+	}
+
+	parts := strings.SplitN(ciphertext, ":", 3)
+	if len(parts) != 3 {
+		return "", errors.New("invalid encrypted format")
+	}
+
+	nonceBase64 := parts[1]
+	ciphertextBase64 := parts[2]
+
+	nonce, err := base64.StdEncoding.DecodeString(nonceBase64)
+	if err != nil {
+		return "", fmt.Errorf("failed to decode nonce: %w", err)
+	}
+
+	encryptedData, err := base64.StdEncoding.DecodeString(ciphertextBase64)
+	if err != nil {
+		return "", fmt.Errorf("failed to decode ciphertext: %w", err)
+	}
+
+	masterKey, err := e.secretKeyRepository.GetSecretKey()
+	if err != nil {
+		return "", fmt.Errorf("failed to get master key: %w", err)
+	}
+
+	block, err := aes.NewCipher([]byte(masterKey)[:32])
+	if err != nil {
+		return "", fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	plaintext, err := gcm.Open(nil, nonce, encryptedData, nil)
+	if err != nil {
+		return "", fmt.Errorf("failed to decrypt: %w", err)
+	}
+
+	return string(plaintext), nil
+}
+
+func (e *SecretKeyFieldEncryptor) isEncrypted(value string) bool {
+	return strings.HasPrefix(value, encryptedPrefix)
+}
+
+func (e *SecretKeyFieldEncryptor) deriveNonce(
+	itemID uuid.UUID,
+	masterKey string,
+	nonceSize int,
+) []byte {
+	h := hmac.New(sha256.New, []byte(masterKey))
+	h.Write(itemID[:])
+	hash := h.Sum(nil)
+	return hash[:nonceSize]
+}

backend/internal/util/encryption/secret_key_field_encryptor_test.go

@@ -0,0 +1,120 @@
+package encryption
+
+import (
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_Encrypt_Decrypt_RoundTrip(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+	plaintext := "my-secret-password"
+
+	encrypted, err := encryptor.Encrypt(itemID, plaintext)
+	assert.NoError(t, err)
+	assert.NotEmpty(t, encrypted)
+	assert.NotEqual(t, plaintext, encrypted)
+	assert.Contains(t, encrypted, "enc:")
+
+	decrypted, err := encryptor.Decrypt(itemID, encrypted)
+	assert.NoError(t, err)
+	assert.Equal(t, plaintext, decrypted)
+}
+
+func Test_Encrypt_EmptyString_ReturnsEmpty(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+
+	encrypted, err := encryptor.Encrypt(itemID, "")
+	assert.NoError(t, err)
+	assert.Empty(t, encrypted)
+}
+
+func Test_Decrypt_EmptyString_ReturnsEmpty(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+
+	decrypted, err := encryptor.Decrypt(itemID, "")
+	assert.NoError(t, err)
+	assert.Empty(t, decrypted)
+}
+
+func Test_Decrypt_PlaintextValue_ReturnsAsIs(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+	plaintext := "not-encrypted-password"
+
+	decrypted, err := encryptor.Decrypt(itemID, plaintext)
+	assert.NoError(t, err)
+	assert.Equal(t, plaintext, decrypted)
+}
+
+func Test_Encrypt_DetectsAlreadyEncryptedFormat(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+	alreadyEncrypted := "enc:nonce:ciphertext"
+
+	result, err := encryptor.Encrypt(itemID, alreadyEncrypted)
+	assert.NoError(t, err)
+	assert.Equal(t, alreadyEncrypted, result)
+}
+
+func Test_Encrypt_SamePlaintext_DifferentItemIDs_ProducesDifferentCiphertext(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	plaintext := "shared-secret"
+	itemID1 := uuid.New()
+	itemID2 := uuid.New()
+
+	encrypted1, err := encryptor.Encrypt(itemID1, plaintext)
+	assert.NoError(t, err)
+
+	encrypted2, err := encryptor.Encrypt(itemID2, plaintext)
+	assert.NoError(t, err)
+
+	assert.NotEqual(t, encrypted1, encrypted2)
+
+	decrypted1, err := encryptor.Decrypt(itemID1, encrypted1)
+	assert.NoError(t, err)
+	assert.Equal(t, plaintext, decrypted1)
+
+	decrypted2, err := encryptor.Decrypt(itemID2, encrypted2)
+	assert.NoError(t, err)
+	assert.Equal(t, plaintext, decrypted2)
+}
+
+func Test_Encrypt_AlreadyEncrypted_ReturnsAsIs(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+	plaintext := "my-password"
+
+	encrypted1, err := encryptor.Encrypt(itemID, plaintext)
+	assert.NoError(t, err)
+
+	encrypted2, err := encryptor.Encrypt(itemID, encrypted1)
+	assert.NoError(t, err)
+
+	assert.Equal(t, encrypted1, encrypted2)
+}
+
+func Test_Decrypt_MalformedData_ReturnsError(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+
+	_, err := encryptor.Decrypt(itemID, "enc:invalid")
+	assert.Error(t, err)
+
+	_, err = encryptor.Decrypt(itemID, "enc:invalid:invalid-base64")
+	assert.Error(t, err)
+}
+
+func Test_EncryptedFormat_ContainsPrefix(t *testing.T) {
+	encryptor := GetFieldEncryptor()
+	itemID := uuid.New()
+	plaintext := "test-secret"
+
+	encrypted, err := encryptor.Encrypt(itemID, plaintext)
+	assert.NoError(t, err)
+	assert.Contains(t, encrypted, "enc:")
+}

backend/internal/util/tools/enums.go

@@ -15,6 +15,7 @@ const (
 type PostgresqlVersion string
 
 const (
+	PostgresqlVersion12 PostgresqlVersion = "12"
 	PostgresqlVersion13 PostgresqlVersion = "13"
 	PostgresqlVersion14 PostgresqlVersion = "14"
 	PostgresqlVersion15 PostgresqlVersion = "15"
@@ -32,6 +33,8 @@ const (
 
 func GetPostgresqlVersionEnum(version string) PostgresqlVersion {
 	switch version {
+	case "12":
+		return PostgresqlVersion12
 	case "13":
 		return PostgresqlVersion13
 	case "14":

backend/internal/util/tools/postgresql.go

@@ -30,7 +30,7 @@ func GetPostgresqlExecutable(
 	return filepath.Join(basePath, executableName)
 }
 
-// VerifyPostgresesInstallation verifies that PostgreSQL versions 13-17 are installed
+// VerifyPostgresesInstallation verifies that PostgreSQL versions 12-18 are installed
 // in the current environment. Each version should be installed with the required
 // client tools (pg_dump, psql) available.
 // In development: ./tools/postgresql/postgresql-{VERSION}/bin
@@ -41,6 +41,7 @@ func VerifyPostgresesInstallation(
 	postgresesInstallDir string,
 ) {
 	versions := []PostgresqlVersion{
+		PostgresqlVersion12,
 		PostgresqlVersion13,
 		PostgresqlVersion14,
 		PostgresqlVersion15,

backend/migrations/20251108173913_add_from_to_email_notifier.sql

@@ -0,0 +1,11 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE email_notifiers
+    ADD COLUMN from_email VARCHAR(255);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE email_notifiers
+    DROP COLUMN from_email;
+-- +goose StatementEnd

backend/migrations/20251116075135_add_virtual_host_and_prefix_to_s3.sql

@@ -0,0 +1,17 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE s3_storages
+    ADD COLUMN s3_prefix TEXT;
+
+ALTER TABLE s3_storages
+    ADD COLUMN s3_use_virtual_hosted_style BOOLEAN NOT NULL DEFAULT FALSE;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE s3_storages
+    DROP COLUMN s3_use_virtual_hosted_style;
+
+ALTER TABLE s3_storages
+    DROP COLUMN s3_prefix;
+-- +goose StatementEnd

backend/migrations/20251116195618_add_azure_blob_storage.sql

@@ -0,0 +1,28 @@
+-- +goose Up
+-- +goose StatementBegin
+
+CREATE TABLE azure_blob_storages (
+    storage_id        UUID PRIMARY KEY,
+    auth_method       TEXT NOT NULL,
+    connection_string TEXT,
+    account_name      TEXT,
+    account_key       TEXT,
+    container_name    TEXT NOT NULL,
+    endpoint          TEXT,
+    prefix            TEXT
+);
+
+ALTER TABLE azure_blob_storages
+    ADD CONSTRAINT fk_azure_blob_storages_storage
+    FOREIGN KEY (storage_id)
+    REFERENCES storages (id)
+    ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED;
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+DROP TABLE IF EXISTS azure_blob_storages;
+
+-- +goose StatementEnd

backend/migrations/20251117064849_add_backup_encryption_fields.sql

@@ -0,0 +1,25 @@
+-- +goose Up
+-- +goose StatementBegin
+
+ALTER TABLE backup_configs
+    ADD COLUMN encryption TEXT NOT NULL DEFAULT 'NONE';
+
+ALTER TABLE backups
+    ADD COLUMN encryption_salt TEXT,
+    ADD COLUMN encryption_iv   TEXT,
+    ADD COLUMN encryption      TEXT NOT NULL DEFAULT 'NONE';
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+ALTER TABLE backups
+    DROP COLUMN IF EXISTS encryption,
+    DROP COLUMN IF EXISTS encryption_iv,
+    DROP COLUMN IF EXISTS encryption_salt;
+
+ALTER TABLE backup_configs
+    DROP COLUMN IF EXISTS encryption;
+
+-- +goose StatementEnd

backend/tools/download_linux.sh

@@ -5,7 +5,7 @@ set -e  # Exit on any error
 # Ensure non-interactive mode for apt
 export DEBIAN_FRONTEND=noninteractive
 
-echo "Installing PostgreSQL client tools versions 13-18 for Linux (Debian/Ubuntu)..."
+echo "Installing PostgreSQL client tools versions 12-18 for Linux (Debian/Ubuntu)..."
 echo
 
 # Check if running on supported system
@@ -47,7 +47,7 @@ echo "Updating package list..."
 $SUDO apt-get update -qq -y
 
 # Install client tools for each version
-versions="13 14 15 16 17 18"
+versions="12 13 14 15 16 17 18"
 
 for version in $versions; do
     echo "Installing PostgreSQL $version client tools..."

backend/tools/download_macos.sh

@@ -2,7 +2,7 @@
 
 set -e  # Exit on any error
 
-echo "Installing PostgreSQL client tools versions 13-18 for MacOS..."
+echo "Installing PostgreSQL client tools versions 12-18 for MacOS..."
 echo
 
 # Check if Homebrew is installed
@@ -31,6 +31,7 @@ brew install wget openssl readline zlib
 
 # PostgreSQL source URLs
 declare -A PG_URLS=(
+    ["12"]="https://ftp.postgresql.org/pub/source/v12.20/postgresql-12.20.tar.gz"
     ["13"]="https://ftp.postgresql.org/pub/source/v13.16/postgresql-13.16.tar.gz"
     ["14"]="https://ftp.postgresql.org/pub/source/v14.13/postgresql-14.13.tar.gz"
     ["15"]="https://ftp.postgresql.org/pub/source/v15.8/postgresql-15.8.tar.gz"
@@ -107,7 +108,7 @@ build_postgresql_client() {
 }
 
 # Build each version
-versions="13 14 15 16 17 18"
+versions="12 13 14 15 16 17 18"
 
 for version in $versions; do
     url=${PG_URLS[$version]}

backend/tools/download_windows.bat

@@ -1,7 +1,7 @@
 @echo off
 setlocal enabledelayedexpansion
 
-echo Downloading and installing PostgreSQL versions 13-18 for Windows...
+echo Downloading and installing PostgreSQL versions 12-18 for Windows...
 echo.
 
 :: Create downloads and postgresql directories if they don't exist
@@ -17,6 +17,7 @@ cd downloads
 set "BASE_URL=https://get.enterprisedb.com/postgresql"
 
 :: Define versions and their corresponding download URLs
+set "PG12_URL=%BASE_URL%/postgresql-12.20-1-windows-x64.exe"
 set "PG13_URL=%BASE_URL%/postgresql-13.16-1-windows-x64.exe"
 set "PG14_URL=%BASE_URL%/postgresql-14.13-1-windows-x64.exe"
 set "PG15_URL=%BASE_URL%/postgresql-15.8-1-windows-x64.exe"
@@ -25,7 +26,7 @@ set "PG17_URL=%BASE_URL%/postgresql-17.0-1-windows-x64.exe"
 set "PG18_URL=%BASE_URL%/postgresql-18.0-1-windows-x64.exe"
 
 :: Array of versions
-set "versions=13 14 15 16 17 18"
+set "versions=12 13 14 15 16 17 18"
 
 :: Download and install each version
 for %%v in (%versions%) do (

backend/tools/readme.md

@@ -1,6 +1,6 @@
 This directory is needed only for development and CI\CD.
 
-We have to download and install all the PostgreSQL versions from 13 to 18 locally.
+We have to download and install all the PostgreSQL versions from 12 to 18 locally.
 This is needed so we can call pg_dump, pg_dumpall, etc. on each version of the PostgreSQL database.
 
 You do not need to install PostgreSQL fully with all the components.
@@ -8,6 +8,7 @@ We only need the client tools (pg_dump, pg_dumpall, psql, etc.) for each version
 
 We have to install the following:
 
+- PostgreSQL 12
 - PostgreSQL 13
 - PostgreSQL 14
 - PostgreSQL 15
@@ -72,6 +73,7 @@ The final directory structure should match:
 
 For example:
 
+- `./tools/postgresql/postgresql-12/bin/pg_dump`
 - `./tools/postgresql/postgresql-13/bin/pg_dump`
 - `./tools/postgresql/postgresql-14/bin/pg_dump`
 - `./tools/postgresql/postgresql-15/bin/pg_dump`

contribute/README.md

@@ -1,94 +0,0 @@
-### Prerequisites
-
-1. Read docs in /docs folder, README.md in /backend and /frontend folders
-2. Run both backend and frontend following the instructions in their respective README.md files (for development)
-3. Read this file till the end
-
-### How to create a pull request?
-
-We use gitflow approach.
-
-1. Create a new branch from main
-2. Make changes
-3. Create a pull request to main
-4. Wait for review
-5. Merge pull request
-
-Commits should be named in the following format depending on the type of change:
-
-- `FEATURE (area): What was done`
-- `FIX (area): What was fixed`
-- `REFACTOR (area): What was refactored`
-
-To see examples, look at commit history in main branch.
-
-Branches should be named in the following format:
-
-- `feature/what_was_done`
-- `fix/what_was_fixed`
-- `refactor/what_was_refactored`
-
-Example:
-
-- `feature/add_support_of_kubernetes_helm`
-- `fix/make_healthcheck_optional`
-- `refactor/refactor_navbar`
-
-Before any commit, make sure:
-
-1. You created critical tests for your changes
-2. `make lint` is passing (for backend) and `npm run lint` is passing (for frontend)
-3. All tests are passing
-4. Project is building successfully
-5. All your commits should be squashed into one commit with proper message (or to meaningful parts)
-6. Code do really refactored and production ready
-7. You have one single PR per one feature (at least, if features not connected)
-
-### Automated Versioning
-
-This project uses automated versioning based on commit messages:
-
-- **FEATURE (area)**: Creates a **minor** version bump (e.g., 1.0.0 → 1.1.0)
-- **FIX (area)**: Creates a **patch** version bump (e.g., 1.0.0 → 1.0.1)
-- **REFACTOR (area)**: Creates a **patch** version bump (e.g., 1.0.0 → 1.0.1)
-- **BREAKING CHANGE**: Creates a **major** version bump (e.g., 1.0.0 → 2.0.0)
-
-The system automatically:
-
-- Analyzes commits since the last release
-- Determines the appropriate version bump
-- Generates a changelog grouped by area (frontend/backend/etc.)
-- Creates GitHub releases with detailed release notes
-- Updates package.json version numbers
-
-To skip automated release (for documentation updates, etc.), add `[skip-release]` to your commit message.
-
-### Docs
-
-If you need to add some explanation, do it in appropriate place in the code. Or in the /docs folder if it is something general. For charts, use Mermaid.
-
-### Priorities
-
-Before taking anything more than a couple of lines of code, please write Rostislav via Telegram (@rostislav_dugin) and confirm priority. It is possible that we already have something in the works, it is not needed or it's not project priority.
-
-Nearsest features:
-- add API keys and API actions
-- add encryption
-
-Storages tasks:
-- check AWS S3 support
-- check Google Cloud S3 support
-- add FTP
-- add Dropbox
-- add OneDrive
-- add NAS
-- add Yandex Drive
-
-Notifications tasks:
-- add Mattermost
-- make webhooks flexible
-- add Gotify
-
-Extra:
-
-- add HTTPS for Postgresus

contribute/how-to-add-notifier.md

@@ -1,45 +0,0 @@
-# How to add new notifier to Postgresus (Discord, Slack, Telegram, Email, Webhook, etc.)
-
-## Backend part
-
-1. Create new model in `backend/internal/features/notifiers/models/{notifier_name}/` folder. Implement `NotificationSender` interface from parent folder.
-   - The model should implement `Send(logger *slog.Logger, heading string, message string) error` and `Validate() error` methods
-   - Use UUID primary key as `NotifierID` that references the main notifiers table
-
-2. Add new notifier type to `backend/internal/features/notifiers/enums.go` in the `NotifierType` constants.
-
-3. Update the main `Notifier` model in `backend/internal/features/notifiers/model.go`:
-   - Add new notifier field with GORM foreign key relation
-   - Update `getSpecificNotifier()` method to handle the new type
-   - Update `Send()` method to route to the new notifier
-
-4. If you need to add some .env variables to test, add them in `backend/internal/config/config.go` (so we can use it in tests)
-
-5. If you need some Docker container to test, add it to `backend/docker-compose.yml.example`. For sensitive data - keep it blank.
-
-6. If you need some sensitive envs to test in pipeline, message @rostislav_dugin so I can add it to GitHub Actions. For example, API keys or credentials.
-
-7. Create new migration in `backend/migrations` folder:
-   - Create table with `notifier_id` as UUID primary key
-   - Add foreign key constraint to `notifiers` table with CASCADE DELETE
-   - Look at existing notifier migrations for reference
-
-8. Make sure that all tests are passing.
-
-## Frontend part
-
-If you are able to develop only backend - it's fine, message @rostislav_dugin so I can complete UI part.
-
-1. Add models and validator to `frontend/src/entity/notifiers/models/{notifier_name}/` folder and update `index.ts` file to include new model exports.
-
-2. Upload an SVG icon to `public/icons/notifiers/`, update `src/entity/notifiers/models/getNotifierLogoFromType.ts` to return new icon path, update `src/entity/notifiers/models/NotifierType.ts` to include new type, and update `src/entity/notifiers/models/getNotifierNameFromType.ts` to return new name.
-
-3. Add UI components to manage your notifier:
-   - `src/features/notifiers/ui/edit/notifiers/Edit{NotifierName}Component.tsx` (for editing)
-   - `src/features/notifiers/ui/show/notifier/Show{NotifierName}Component.tsx` (for display)
-
-4. Update main components to handle the new notifier type:
-   - `EditNotifierComponent.tsx` - add import, validation function, and component rendering
-   - `ShowNotifierComponent.tsx` - add import and component rendering
-
-5. Make sure everything is working as expected.

contribute/how-to-add-storage.md

@@ -1,51 +0,0 @@
-# How to add new storage to Postgresus (S3, FTP, Google Drive, NAS, etc.)
-
-## Backend part
-
-1. Create new model in `backend/internal/features/storages/models/{storage_name}/` folder. Implement `StorageFileSaver` interface from parent folder.
-   - The model should implement `SaveFile(logger *slog.Logger, fileID uuid.UUID, file io.Reader) error`, `GetFile(fileID uuid.UUID) (io.ReadCloser, error)`, `DeleteFile(fileID uuid.UUID) error`, `Validate() error`, and `TestConnection() error` methods
-   - Use UUID primary key as `StorageID` that references the main storages table
-   - Add `TableName() string` method to return the proper table name
-
-2. Add new storage type to `backend/internal/features/storages/enums.go` in the `StorageType` constants.
-
-3. Update the main `Storage` model in `backend/internal/features/storages/model.go`:
-   - Add new storage field with GORM foreign key relation
-   - Update `getSpecificStorage()` method to handle the new type
-   - Update `SaveFile()`, `GetFile()`, and `DeleteFile()` methods to route to the new storage
-   - Update `Validate()` method to include new storage validation
-
-4. If you need to add some .env variables to test, add them in `backend/internal/config/config.go` (so we can use it in tests)
-
-5. If you need some Docker container to test, add it to `backend/docker-compose.yml.example`. For sensitive data - keep it blank.
-
-6. If you need some sensitive envs to test in pipeline, message @rostislav_dugin so I can add it to GitHub Actions. For example, Google Drive envs or FTP credentials.
-
-7. Create new migration in `backend/migrations` folder:
-   - Create table with `storage_id` as UUID primary key
-   - Add foreign key constraint to `storages` table with CASCADE DELETE
-   - Look at existing storage migrations for reference
-
-8. Update tests in `backend/internal/features/storages/model_test.go` to test new storage
-
-9. Make sure that all tests are passing.
-
-## Frontend part
-
-If you are able to develop only backend - it's fine, message @rostislav_dugin so I can complete UI part.
-
-1. Add models and api to `frontend/src/entity/storages/models/` folder and update `index.ts` file to include new model exports.
-   - Create TypeScript interface for your storage model
-   - Add validation function if needed
-
-2. Upload an SVG icon to `public/icons/storages/`, update `src/entity/storages/models/getStorageLogoFromType.ts` to return new icon path, update `src/entity/storages/models/StorageType.ts` to include new type, and update `src/entity/storages/models/getStorageNameFromType.ts` to return new name.
-
-3. Add UI components to manage your storage:
-   - `src/features/storages/ui/edit/storages/Edit{StorageName}Component.tsx` (for editing)
-   - `src/features/storages/ui/show/storages/Show{StorageName}Component.tsx` (for display)
-
-4. Update main components to handle the new storage type:
-   - `EditStorageComponent.tsx` - add import and component rendering
-   - `ShowStorageComponent.tsx` - add import and component rendering
-
-5. Make sure everything is working as expected.

frontend/public/favicon.svg

@@ -1,5 +1,24 @@
-<svg width="30" height="30" viewBox="0 0 30 30" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M18.1899 24.7431C17.4603 24.7737 16.6261 24.3423 16.1453 23.6749C15.9745 23.438 15.6161 23.4548 15.4621 23.7026C15.1857 24.1478 14.9389 24.5259 14.8066 24.751C14.4739 25.3197 14.5242 25.4223 14.7918 25.8636C15.2923 26.689 16.8374 27.9675 19.0113 27.999C22.3807 28.0474 25.2269 26.2506 26.303 21.9058C29.0811 22.0322 29.5767 20.9018 29.5866 19.8415C29.5965 18.795 29.1542 18.2796 27.8866 17.9232C27.4739 17.8067 26.9902 17.7061 26.4689 17.4948C26.3198 16.2281 25.9496 15.0257 25.376 13.8933C28.1433 2.78289 16.4839 -0.631985 12.0048 4.22426C11.3818 3.42756 9.81016 2.00395 7.14065 2C4.12857 1.99606 1 4.47798 1 8.23346C1 9.79626 1.93492 12.1331 2.56083 14.1332C3.86103 18.2875 4.6992 19.4683 6.52362 19.801C7.98376 20.0675 9.1645 19.3972 10.0471 18.2796C11.3233 18.4028 10.4726 19.5371 16.4099 19.2234C17.6765 19.1168 18.7694 19.564 19.5937 20.498C20.8071 21.8732 20.4566 24.6474 18.1899 24.7421V24.7431ZM17.8483 13.0423C17.2174 12.9801 16.707 12.4697 16.6448 11.8389C16.5599 10.9859 17.2708 10.2761 18.1237 10.36C18.7546 10.4222 19.265 10.9326 19.3272 11.5634C19.4111 12.4154 18.7013 13.1262 17.8483 13.0423ZM20.578 18.178C19.9403 17.5392 19.8524 16.7149 20.3519 16.1788C20.9186 15.5706 21.7242 15.85 22.1428 16.3061C23.4331 17.712 24.9209 18.6193 27.854 19.337C28.4651 19.487 28.4157 20.3716 27.7908 20.4476C26.4798 20.6076 24.3355 20.3065 22.8882 19.6934C22.0115 19.3222 21.1763 18.7762 20.578 18.177V18.178Z" fill="#155DFC"/>
-<path d="M17.0439 19.2156C17.0439 19.2156 17.037 19.2156 17.0321 19.2156C18.0648 19.2738 18.9029 19.7161 19.594 20.498C20.8073 21.8732 20.4568 24.6474 18.1901 24.7421C17.4606 24.7727 16.6263 24.3413 16.1456 23.6739C17.7202 26.6505 21.8281 26.0818 22.2694 23.3432C22.6288 21.114 20.0304 18.5699 17.0439 19.2136V19.2156ZM10 18C7.24751 15.8875 7.91886 10.4824 10.7779 6.4742C10.3317 5.85322 9.00779 4.787 7.32553 4.74751C4.61357 4.68433 2.68055 6.99842 3.66286 10.206C3.9768 6.91846 7.20805 6.33105 8.7363 8.17324C6.76477 12.1479 7.27817 16.1766 10 18C15 19.2194 12.2436 19.21 10 18Z" fill="#1E56E2"/>
-<path d="M10 18H12L13 19H12L11 18.5L10 18Z" fill="#155DFC"/>
+<svg width="1000" height="1000" viewBox="0 0 1000 1000" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_221_160)">
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frontend/src/entity/backups/index.ts

@@ -4,3 +4,4 @@ export { BackupStatus } from './model/BackupStatus';
 export type { Backup } from './model/Backup';
 export type { BackupConfig } from './model/BackupConfig';
 export { BackupNotificationType } from './model/BackupNotificationType';
+export { BackupEncryption } from './model/BackupEncryption';