AES Encryption

AES Encryption

by Mohit Agrawal

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/aes.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/pbkdf2.js"></script>

JavaScript

const AesUtil = (keySize, iterationCount) => {
  this.keySize = keySize / 32;
  this.iterationCount = iterationCount;
};

AesUtil.prototype.generateKey = (salt, passPhrase) => {
  var key = CryptoJS.PBKDF2(
      passPhrase, 
      CryptoJS.enc.Hex.parse(salt),
      { keySize: this.keySize, iterations: this.iterationCount });
  return key;
};


AesUtil.prototype.encrypt = function(salt, iv, passPhrase, plainText) {
  var key = this.generateKey(salt, passPhrase);
  var encrypted = CryptoJS.AES.encrypt(
      plainText,
      key,
      { iv: CryptoJS.enc.Hex.parse(iv) });
  return encrypted.ciphertext.toString(CryptoJS.enc.Base64);
};