api/utils/crypto.js

const crypto = require('crypto');
const key = Buffer.from(process.env.CREDS_KEY, 'hex');
const iv = Buffer.from(process.env.CREDS_IV, 'hex');
const algorithm = 'aes-256-cbc';

function encrypt(value) {
  const cipher = crypto.createCipheriv(algorithm, key, iv);
  let encrypted = cipher.update(value, 'utf8', 'hex');
  encrypted += cipher.final('hex');
  return encrypted;
}

function decrypt(encryptedValue) {
  const decipher = crypto.createDecipheriv(algorithm, key, iv);
  let decrypted = decipher.update(encryptedValue, 'hex', 'utf8');
  decrypted += decipher.final('utf8');
  return decrypted;
}

module.exports = { encrypt, decrypt };