C / C++ / MFC

MY_DLL_API UINT MyCustomActionLaunch(MSIHANDLE hMsiModule)
{
	
    MessageBoxW (NULL, L"MyCustomAction launch", L"MyCustomAction", MB_OK);	
    WCHAR msg [500] = {0};
    WCHAR vbuff [1024] = {0};
    DWORD vlen = 1024;
    UINT gp = MsiGetPropertyW(hMsiModule, L"ProgramFilesFolder", vbuff, &vlen);
	
	if(gp == ERROR_SUCCESS )
	{
		 if (wcslen(vbuff) <= 0)
		 {
			<big> MessageBoxW(NULL , L"Zero Bytes",L"MyCustomAction" , MB_OK);</big>		 }
		
		MessageBoxW(NULL, vbuff, L"MyCustomAction", MB_OK);    		

	}	else
	{
		MessageBoxW (NULL, L"Failure", L"MyCustomAction", MB_OK);
    
	}

	return -1;
}

const char* CrypThread::EncryptAes(const char* inputFileName, const char* outputFileName, const char* password)<br />
{<br />
   byte pass[AES::BLOCKSIZE]; <br />
   byte iv[16]; <br />
   byte true_iv[16]; <br />
<br />
   AutoSeededRandomPool rng;<br />
<br />
   try <br />
   {  <br />
      StringSource(password, true, new HashFilter(*(new SHA256), new ArraySink(pass, AES::BLOCKSIZE)));<br />
<br />
      rng.GenerateBlock(iv, 16);<br />
      memset(true_iv, 0, 16);<br />
<br />
      AES::Encryption aesEncryption(pass, CryptoPP::AES::DEFAULT_KEYLENGTH);<br />
      CFB_Mode_ExternalCipher::Encryption cbcEncryption(aesEncryption, iv, 8);<br />
<br />
      StreamTransformationFilter *encryptor;<br />
<br />
      encryptor = new StreamTransformationFilter(cbcEncryption, new FileSink(outputFileName));<br />
      encryptor->Put(iv, 16);<br />
<br />
      FileSource(inputFileName, true, encryptor);<br />
   }<br />
   catch(CryptoPP::Exception &e)<br />
   {<br />
      return e.what();<br />
   }<br />
<br />
   return 0;<br />
}