Need help for converting c# encryption code to javascript

Question

I have this below code in c# i need to convert it into nodejs i would really appriciate some help in this.
Rfc2898DeriveBytes passwordDb2 = new Rfc2898DeriveBytes(passphrase, Encoding.ASCII.GetBytes(DeriveSalt(grains)));
byte[] nonce = passwordDb2.GetBytes(NonceSize);
AesManaged symmetricKey = new AesManaged { Mode = CipherMode.ECB, Padding = PaddingMode.None };
_encryptor = symmetricKey.CreateEncryptor(_nonces[0], null);
public byte[] Encrypt(byte[] plainText, int blockIndex)
byte[] nonceEncrypted = new byte[NonceSize];
byte[] outputData = new byte[_chunkSize];
_encryptor.TransformBlock(_nonces[blockIndex], 0, NonceSize, nonceEncrypted, 0);
for (int i = 0; i < _chunkSize; i++)
outputData[i] = (byte)(plainText[i] ^ nonceEncrypted[i % NonceSize]);
return outputData;
public byte[] Decrypt(byte[] encryptedText, int blockIndex)
byte[] nonceEncrypted = new byte[NonceSize];
byte[] outputData = new byte[_chunkSize];
_encryptor.TransformBlock(_nonces[blockIndex], 0, NonceSize, nonceEncrypted, 0);
int index = 0;
for (int i = 0; i < _chunkSize; i++, index++)
if (index == NonceSize)
index = 0;
outputData[i] = (byte)(encryptedText[i] ^ nonceEncrypted[index]);
return outputData;
Currently i have the below code from what i understood (I am quite new to nodejs)
var crypto = require("crypto");
var nonce = crypto.pbkdf2Sync(passphrase, "grains", 1000, NonceSize);
_encryptor = crypto.createCipheriv('aes-128-ecb', binkey, "");
_decryptor = crypto.createDecipheriv('aes-128-ecb', binkey, "");
Encrypt: function (plainText, blockIndex) {
var nonceEncrypted = [NonceSize];
var outputData = [_chunkSize];
var crypted = Buffer.concat([_encryptor.update(plainText), _encryptor.final()]);
for (var i = 0; i < _chunkSize; i++) {
outputData[i] =(plainText[i] ^ nonceEncrypted[i % NonceSize]);
var x = new Buffer(outputData);
return x;
Decrypt: function (encryptedText, blockIndex) {
var nonceEncrypted = [NonceSize];
var outputData = [_chunkSize];
var decrypt = Buffer.concat([_decryptor.update(encryptedText), _decryptor.final()]);
var index = 0;
for (var i = 0; i < _chunkSize; i++, index++) {
if (index == NonceSize)
index = 0;
outputData[i] = (encryptedText[i] ^ nonceEncrypted[index]);
var x = new Buffer(outputData);
return x;

Answer 1

Maybe, you should post to the Javascript secition of the ASP.NET forum.
http://forums.asp.net/