Argentini.Halide.H3Secure.DecryptInt32 C# (CSharp) Method

        public static Int32? DecryptInt32(String data, Byte[] key, Byte[] ivec)
        {
            Int32? retVal = null;
            String newData = data;
            ASCIIEncoding encoder = new ASCIIEncoding();
            AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider();
            aesProvider.BlockSize = 128;
            aesProvider.KeySize = 256;
            ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor(key, ivec);
            MemoryStream decryptedStream = new MemoryStream();

            try
            {
                byte[] inputInBytes = Base64PlusStringDecodeToBytes(newData);
                CryptoStream cryptStream = new CryptoStream(decryptedStream, cryptoTransform, CryptoStreamMode.Write);

                cryptStream.Write(inputInBytes, 0, inputInBytes.Length);
                cryptStream.FlushFinalBlock();
                decryptedStream.Position = 0;

                byte[] result = new byte[decryptedStream.Length];
                decryptedStream.Read(result, 0, Convert.ToInt32(decryptedStream.Length));

                cryptStream.Close();

                try
                {
                    retVal = BitConverter.ToInt32(result, 0);
                }

                catch
                {
                    retVal = null;
                }
            }

            catch
            {
                retVal = null;
            }

            return retVal;
        }