encrypt.js

import dotenv from "dotenv";
import crypto from "crypto";

dotenv.config();

const algorithm = "aes-256-ctr";

export function encrypt(text) {
  const secretKey = Buffer.from(process.env.ENCRYPTION_KEY, "hex");
  const iv = crypto.randomBytes(16);
  const cipher = crypto.createCipheriv(algorithm, secretKey, iv);
  let encrypted = cipher.update(text);
  encrypted = Buffer.concat([encrypted, cipher.final()]);
  return { iv: iv.toString("hex"), encryptedData: encrypted.toString("hex") };
}

export function decrypt(text) {
  const secretKey = Buffer.from(process.env.ENCRYPTION_KEY, "hex");
  let iv = Buffer.from(text.iv, "hex");
  let encryptedText = Buffer.from(text.encryptedData, "hex");
  let decipher = crypto.createDecipheriv(algorithm, secretKey, iv);
  let decrypted = decipher.update(encryptedText);
  decrypted = Buffer.concat([decrypted, decipher.final()]);
  return decrypted.toString();
}