Fixed MEncrypt for KGunZ & IJJI

[Contradict]

This isn't Emisand's, since his/her's upload died, I (sort of) fixed it up. The header changed for KGunz, which I didn't think of 'till a few minutes ago.

EDIT : Oh, use ThievingSix's MRS Decompiler to unpack the .mrs's without damaging the .mef's.

I attached the compiled MEncrypt.exe w/ PrivateKey.txt & .h

Yes, I rigged it, oh well.

void RSADecryptFile( const char *privFilename, const char *szFileName, const char *szOutputFileName)
{
	// Read private key
	FileSource privFile( privFilename, true, new HexDecoder);
	RSAES_PKCS1v15_Decryptor priv( privFile );

	// Get size of 1 block
	size_t nCipherTextLength = priv.FixedCiphertextLength();

	// Set file source
	FileSource fileSource( szFileName, false);

	RSAHEADER header = GetHeaderFile( szFileName );

	if( !memcmp( header.byteHeader, gHeaderChecker, sizeof(gHeaderChecker) ) )
		g_bIsIjji = true;

	// Skip header
	if( g_bIsIjji )
		fileSource.Pump( 40 );
	else
		fileSource.Pump( 45 );

	// Decrypt
	string strBuff;
	StringSink* pOutput = new StringSink( strBuff);
	PK_DecryptorFilter *pDecryptFilter = new PK_DecryptorFilter( GlobalRNG(), priv, pOutput);
	fileSource.Attach( pDecryptFilter);

	try
	{
		// Pump data
		lword nPump = 0;

		while ( nPump = fileSource.Pump( nCipherTextLength))
			pDecryptFilter->MessageEnd();
	}
	catch ( CryptoPP::Exception &e)
	{
		string str = e.what();
		assert( 0);
	}

	pOutput->MessageEnd();

	// Unzip code and save to file
	StringSource( strBuff, true, new Gunzip( new FileSink( szOutputFileName)));

	strBuff.clear();
}

NOTE:
IJJI's header is 40 bytes long, KGunZ's is 45 bytes long.
The original header size found in MEncrypt is 40 (sizeof(RSAHEASER)), which is default for IJJI, however; I was being retarded and forgot that I was testing on KGunZ's.

Usage:
Open CMD, navigate to directory of MEncrypt, type:
MEncrypt -d PrivateKey.txt [FILE_TO_DECRYPT] [OUTPUT_FILE_NAME]

Edit2 : I added support for IJJI's mefs, as well as KGunZ's. Enjoy.

[MentaL]

[Miguelbkn]

Well done. I like it

[Contradict]

Er, apparently using it in Release mode doesn't work. I can't recall if others can't run debug-built applications on different machines, but as a just in case, I attached the source file in Release2.rar

[kn95951135]

---------------------------
Microsoft Visual C++ Debug Library
---------------------------
Debug Error!

Program: F:\GunZ\Tools\MEncrypt.exe

R6010

- abort() has been called



(Press Retry to debug the application)

I got this error and show

Assertion failed: 0, file c:\users\travis\desktop\euro\mencrypt\mencrypt.cpp, li
ne 180

I using the application from ur attachment. Thanks