AES encryption in iOS and Android, and decryption in C#.NET

First thing first. Some time ago I needed a simple AES encryption in Android to encrypt a password and send it as a parameter for a .net web service where the password was decrypted.

The following is my Android encryption:

    private static String Encrypt(String text, String key)
        throws Exception {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        byte[] keyBytes= new byte[16];
        byte[] b= key.getBytes("UTF-8");
        int len= b.length;
        if (len > keyBytes.length) len = keyBytes.length;
        System.arraycopy(b, 0, keyBytes, 0, len);
        SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
        IvParameterSpec ivSpec = new IvParameterSpec(keyBytes);
        cipher.init(Cipher.ENCRYPT_MODE,keySpec,ivSpec);

        byte[] results = cipher.doFinal(text.getBytes("UTF-8"));
        String result = Base64.encodeBytes(results);
        return result;
        }

And then I decrypted it in C# with:

        public static string Decrypt(string textToDecrypt, string key)
    {
        System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();

        RijndaelManaged rijndaelCipher = new RijndaelManaged();
        rijndaelCipher.Mode = CipherMode.CBC;
        rijndaelCipher.Padding = PaddingMode.PKCS7;

        rijndaelCipher.KeySize = 0x80;
        rijndaelCipher.BlockSize = 0x80;

        string decodedUrl = HttpUtility.UrlDecode(textToDecrypt);
        byte[] encryptedData = Convert.FromBase64String(decodedUrl);
        byte[] pwdBytes = Encoding.UTF8.GetBytes(key);
        byte[] keyBytes = new byte[0x10];
        int len = pwdBytes.Length;
        if (len > keyBytes.Length)
        {
            len = keyBytes.Length;
        }
        Array.Copy(pwdBytes, keyBytes, len);
        rijndaelCipher.Key = keyBytes;
        rijndaelCipher.IV = keyBytes;
        byte[] plainText = rijndaelCipher.CreateDecryptor().TransformFinalBlock(encryptedData, 0, encryptedData.Length);
        return encoding.GetString(plainText);
    }

This worked like a charm, but the problems came when I tried to do the same in iOS. I am pretty new developing applications for the iphone/ipad, so ofcause I googled it, and almost every code sample provided was the following:

- (NSData *)AESEncryptionWithKey:(NSString *)key {
char keyPtr[kCCKeySizeAES128]; // room for terminator (unused)
bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)

// fetch key data
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];

NSUInteger dataLength = [self length];

size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);

size_t numBytesEncrypted = 0;

CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,
                                      keyPtr, kCCKeySizeAES128,
                                      NULL /* initialization vector (optional) */,
                                      [self bytes], [self length], /* input */
                                      buffer, bufferSize, /* output */
                                      &numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
    //the returned NSData takes ownership of the buffer and will free it on deallocation
    return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}

free(buffer); //free the buffer;
return nil;

}

Maybe I was a little bit too optimistic, when I was hoping for a smooth transition here, because when the Android is throwing me something like:

"EgQVKvCLS4VKLoR0xEGexA=="

then the iOS gives me:

"yP42c9gajUra7n0zSEuVJQ=="

Hopefully it is just something I forgot, or some of the settings are wrong?

[UPDATE] The results are now showed after the base64 encoding.