public string DecryptAES(string encryptedString, string Key)
{
//First write to memory
MemoryStream mmsStream = new MemoryStream();
StreamWriter srwTemp = new StreamWriter(mmsStream);
//sBuffer is my encodedtext.
srwTemp.Write(encryptedString);
srwTemp.Flush();
mmsStream.Position = 0;
MemoryStream outstream = new MemoryStream();
//CallingUUDecode
Codecs.UUDecode(mmsStream, outstream);
//Extract the bytes of each of the values
byte[] input = outstream.ToArray();
byte[] key = Convert.FromBase64String(Key);
string decryptedText = null;
using (RijndaelManaged algorithm = new RijndaelManaged())
{
// initialize settings to match those used by CF
algorithm.Mode = CipherMode.ECB;
algorithm.Padding = PaddingMode.PKCS7;
algorithm.BlockSize = 128;
algorithm.KeySize = 128;
algorithm.Key = key;
ICryptoTransform decryptor = algorithm.CreateDecryptor();
using (MemoryStream msDecrypt = new MemoryStream(input))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
decryptedText = srDecrypt.ReadToEnd();
}
}
}
}
return(decryptedText);
}