crypto-wallet-encryptor/decrypt.html at master · sufiyanghori/crypto-wallet-encryptor · GitHub

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<html>

  <head>
   <script src="jquery-3.1.1.min.js"></script>
   <script src="aes.js"></script>
   <script src="pbkdf2.js"></script>
  </head>
  <body>
	<b>Encrypted wallet: </b><input type="text" id="wallet_address" value="">
	<br />
	<b>Passphrase: </b><input type="password" id="passphrase" value="">
	<br />
	<button onclick="execute()">submit</button>
    <div id="decrypted"></div>
	<script>
		var keySize = 256;
		var ivSize = 128;
		var iterations = 100;
		function execute() {
			var message = document.getElementById("wallet_address").value;
			var password = document.getElementById("passphrase").value;
			var decrypted = decrypt(message, password);
			$('#decrypted').text("Your wallet: "+ decrypted.toString(CryptoJS.enc.Utf8) );
		}
		function decrypt (transitmessage, pass) {
		  var salt = CryptoJS.enc.Hex.parse(transitmessage.substr(0, 32));
		  var iv = CryptoJS.enc.Hex.parse(transitmessage.substr(32, 32))
		  var encrypted = transitmessage.substring(64);

		  var key = CryptoJS.PBKDF2(pass, salt, {
			  keySize: keySize/32,
			  iterations: iterations
			});

		  var decrypted = CryptoJS.AES.decrypt(encrypted, key, {
			iv: iv,
			padding: CryptoJS.pad.Pkcs7,
			mode: CryptoJS.mode.CBC

		  })
		  return decrypted;
		}
	</script>
</body>

</html>