[Mono-winforms-list] TripleDESCryptoServiceProvider _NewEncryptor returns null

sharkal wolfgang.ginner at kapsch.net
Wed Jun 13 10:15:36 UTC 2012

i think mono has a bug with the private method "_NewEncryptor", since i get
null, when i want to get the method by "GetMethod":

         TripleDES tripleDESalg = TripleDES.Create();
          TripleDESCryptoServiceProvider sm = tripleDESalg as
          sm.Mode = CipherMode.ECB;
          sm.Padding = PaddingMode.None;
          *MethodInfo mi = sm.GetType().GetMethod("_NewEncryptor",
BindingFlags.NonPublic | BindingFlags.Instance);*
          if (mi != null)
             object[] Par = { keyValue, sm.Mode, iVValue, sm.FeedbackSize, 0
};          // encrypt 0
             ICryptoTransform trans = mi.Invoke(sm, Par) as
             // CreateEnrypt doesn't work for Weak Keys
             //ICryptoTransform trans = sm.CreateEncryptor(keyValue,
             byte[] resultArray = trans.TransformFinalBlock(bytes, 0,
             return resultArray;
              throw new Exception("Decryption failed. Method _NewEncryptor
not found");

I can't use the CreateEnrypt Method, since most times i will have to deal
with Weak Keys.
So does anyone has a solution, how i can get it work under mono?

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