crypto.js

const crypto = require("crypto");
const algorithm = "aes-256-cbc";
const ENCRYPTION_KEY = Buffer.from(
  "b7zfYEKhkmVrl9P3yGN/p+3AOkjWK5D6s2JOJzW6lpo=",
  "base64",
);
const IV_LENGTH = 16;

function encrypt(text) {
  let iv = crypto.randomBytes(IV_LENGTH);
  let cipher = crypto.createCipheriv(
    algorithm,
    Buffer.from(ENCRYPTION_KEY, "hex"),
    iv,
  );
  let encrypted = cipher.update(text);
  encrypted = Buffer.concat([encrypted, cipher.final()]);
  return iv.toString("hex") + ":" + encrypted.toString("hex");
}

function decrypt(text) {
  let textParts = text.split(":");
  let iv = Buffer.from(textParts.shift(), "hex");
  let encryptedText = Buffer.from(textParts.join(":"), "hex");
  let decipher = crypto.createDecipheriv(
    algorithm,
    Buffer.from(ENCRYPTION_KEY, "hex"),
    iv,
  );
  let decrypted = decipher.update(encryptedText);
  decrypted = Buffer.concat([decrypted, decipher.final()]);
  return decrypted.toString();
}

let a = encrypt("node-cheat");
let b = decrypt(a);
console.log(a, b);

function decryptApex(t) {
  const text = Buffer.from(t, "base64");
  let btext = Buffer.from(text, "hex");
  let iv = btext.slice(0, 16);
  let encryptedText = btext.slice(16);
  let decipher = crypto.createDecipheriv(
    algorithm,
    Buffer.from(ENCRYPTION_KEY, "hex"),
    iv,
  );
  let decrypted = decipher.update(encryptedText);
  decrypted = Buffer.concat([decrypted, decipher.final()]);
  return decrypted.toString();
}

let c = decryptApex(
  "shZiijRRaNy8HSDcZeAwYELhBltiBrInSz0MH/F7Ol23VHmJmm3QD1xOMQqaN4FP",
);
console.log("Apex Crypto with Managed IV decrypted : " + c);