Question

I have been tasked to create a C# interface with some of the methods that are being using in the Open Source CrytoLib C++ project. I am trying to create a managed wrapper for the LIB file… however I am getting some errors already and cannot figure out what I am doing wrong as this seems pretty straightforward to this point.

My header file:

// CryptoLibWrapper.h

#pragma once

using namespace System;

namespace CryptoLibWrapper {

public ref class DefaultDecryptorWithMAC
{
public:
    BOOL Decrypt(BYTE const* pEncrypted, UINT uLength, BYTE** ppBuffer, DWORD* pdwLength);
};
}

The errors I am getting…

error C2061: syntax error : identifier ‘BYTE’

error C2146: syntax error : missing ‘;’ before identifier ‘Decrypt’

error C4430: missing type specifier – int assumed. Note: C++ does not support default-int

error C4430: missing type specifier – int assumed. Note: C++ does not support default-int

It has been a while since I have done any C++ and even that was limited, hoping this is easy and I am just being brain dead.

Thanks again!

EDIT: Note… all of the errors are at the "BOOL Decrypt…" line

Answer 1

Seems like you’re probably getting the first error because you’re missing some type definitions. The other errors are probably just as a result of those missing definitions.

You need to include a file that defines BYTE. Putting this at the top of your file should do the job:

#include <windows.h>

or if you don’t care about pulling in the whole of the windows headers, you could try:

#include <windef.h>