javascript aes, rsa crypto

crypto.md

JavaScript Dependency

• https://code.google.com/p/crypto-js
• aes.js
• pbkdf2.js
• https://npmcdn.com/jsencrypt@2.3.1

AesUtil.js

var AesUtil = function(keySize, iterationCount) {
  this.keySize = keySize / 32;
  this.iterationCount = iterationCount;
};

AesUtil.prototype.generateKey = function(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);
}

AesUtil.prototype.decrypt = function(salt, iv, passPhrase, cipherText) {
  var key = this.generateKey(salt, passPhrase);
  var cipherParams = CryptoJS.lib.CipherParams.create({
    ciphertext: CryptoJS.enc.Base64.parse(cipherText)
  });
  var decrypted = CryptoJS.AES.decrypt(
      cipherParams,
      key,
      { iv: CryptoJS.enc.Hex.parse(iv) });
  return decrypted.toString(CryptoJS.enc.Utf8);
}

<script src="/src/js/crypto/aes.js"></script>
<script src="/src/js/crypto/pbkdf2.js"></script>
<script src="/src/js/crypto/AesUtil.js"></script>
<script src="/src/js/crypto/jsencrypt.min.js"></script>
// import crypto libs

<script>
function _rsaEnc(p){
    var e=new JSEncrypt();
    e.setPublicKey('-----BEGIN PUBLIC KEY-----pk-----END PUBLIC KEY-----');
    return e.encrypt(p);
}

var passphrase = CryptoJS.lib.WordArray.random(128/8).toString(CryptoJS.enc.Hex);
// generate passphrase

var iv = CryptoJS.lib.WordArray.random(128/8).toString(CryptoJS.enc.Hex);
var salt = CryptoJS.lib.WordArray.random(128/8).toString(CryptoJS.enc.Hex);
var aesUtil = new AesUtil(128, 8);
var rsaKey = encodeURIComponent(_rsaEnc(salt+iv+passphrase));

var cipherText = aesUtil.encrypt(salt, iv, passphrase, 'plainText');
// encrypt
</script>

Hi..
Thanks for the snippet. It was really helpful.
Can you let me know if I can use it in my project (commercial).
What are is the licence policy that will apply if I do so?

thanks.

@knz237
You can use it to use it.
There is no special policy.