unknownbin/lib/key_generator.js

const crypto = require('crypto');

class KeyGenerator {
    constructor() {
        this.keyspace = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    }

    createKey(keyLength) {
        const buffer = crypto.randomBytes(keyLength);
        let key = '';
        for (let i = 0; i < buffer.length; i++) {
            key += this.keyspace.charAt(buffer[i] % this.keyspace.length);
        }
        return key;
    }
}

module.exports = KeyGenerator;