public static extern int DecryptMessage(ref SECURITY_HANDLE phContext, ref SecBufferDesc pMessage,

Declare Function DecryptMessage Lib "secur32.dll" (TODO) As TODO

        public static extern int DecryptMessage(ref SECURITY_HANDLE phContext,

        public void DecryptMessage(int messageLength,byte[] encryptedBuffer,bool bUseClientContext,

                if(DecryptMessage(ref DecryptionContext,ref DescBuffer,0,out EncryptionQuality) != SEC_E_OK)

                    throw new Exception("DecryptMessage() failed!!!");                    

                MyServerHelper.DecryptMessage(Message.Length,EncryptedBuffer,false,out DecryptedBuffer);

public static extern bool CryptDecryptMessage(

Declare Function CryptDecryptMessage Lib "crypt32.dll" (TODO) As TODO