I’m trying to encrypt a byte array in C# using AES192 and a PBKDF2 password/salt based key and decrypt the same data in NodeJS. However my key generation produces different results in both NodeJS and C#.

The C# code is as follows:

    private void getKeyAndIVFromPasswordAndSalt(string password, byte[] salt, SymmetricAlgorithm symmetricAlgorithm, ref byte[] key, ref byte[] iv)
        Rfc2898DeriveBytes rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, salt);
        key = rfc2898DeriveBytes.GetBytes(symmetricAlgorithm.KeySize / 8);
        iv = rfc2898DeriveBytes.GetBytes(symmetricAlgorithm.BlockSize / 8);

    private byte[] encrypt(byte[] unencryptedBytes, string password, int keySize)
        RijndaelManaged aesEncryption = new RijndaelManaged();
        aesEncryption.KeySize = keySize;
        aesEncryption.BlockSize = 128;
        byte[] key = new byte[keySize];
        byte[] iv = new byte[128];
        getKeyAndIVFromPasswordAndSalt(password, Encoding.ASCII.GetBytes("$391Ge3%£2gfR"), aesEncryption, ref key, ref iv);
        aesEncryption.Key = key;
        aesEncryption.IV = iv;
        Console.WriteLine("iv: {0}", Convert.ToBase64String(aesEncryption.IV));
        Console.WriteLine("key: {0}", Convert.ToBase64String(aesEncryption.Key));
        ICryptoTransform crypto = aesEncryption.CreateEncryptor();
        // The result of the encryption and decryption            
        return crypto.TransformFinalBlock(unencryptedBytes, 0, unencryptedBytes.Length);

The NodeJS code reads like this:

    crypto.pbkdf2("Test", "$391Ge3%£2gfR", 1000, 192/8, (err, key) => {
        var binkey = new Buffer(key, 'ascii');
        var biniv = new Buffer("R6taODpFa1/A7WhTZVszvA==", 'base64');
        var decipher = crypto.createDecipheriv('aes192', binkey, biniv);
        console.log("KEY: " + binkey.toString("base64"));
        var decodedLIL = decipher.update(decryptedBuffer);

The IV is hardcoded as I can’t figure out how to calculate that using pbkdf2. I’ve looked through the nodeJS docs for more help but I’m at a loss as to what’s going on here.

Any assistance would be greatly appreciated.