0xc0000005 when starting exe

[dAnieL_dE]

Hello,

i am running a Programm with QT and Crypto++ included.

I try to run following Code and get 0xc0000005 when trying to run it:


// g++ -g3 -ggdb -O0 -DDEBUG -I/usr/include/cryptopp Driver.cpp -o Driver.exe -lcryptopp -lpthread
// g++ -g -O2 -DNDEBUG -I/usr/include/cryptopp Driver.cpp -o Driver.exe -lcryptopp -lpthread


#define CRYPTOPP_DEFAULT_NO_DLL
#include "cryptopp/dll.h"
#ifdef CRYPTOPP_WIN32_AVAILABLE
#include <windows.h>
#endif

#include "cryptopp/osrng.h"
using CryptoPP::AutoSeededRandomPool;

#include <iostream>
using std::cout;
using std::cerr;
using std::endl;

#include <string>
using std::string;

#include <cstdlib>
using std::exit;

#include "cryptopp/cryptlib.h"
using CryptoPP::Exception;

#include "cryptopp/hex.h"
using CryptoPP::HexEncoder;
using CryptoPP::HexDecoder;

#include "cryptopp/filters.h"
using CryptoPP::StringSink;
using CryptoPP::StringSource;
using CryptoPP::StreamTransformationFilter;

#include "cryptopp/aes.h"
using CryptoPP::AES;

#include "cryptopp/modes.h"
using CryptoPP::CFB_Mode;

int main(int argc, char *argv[])
{
AutoSeededRandomPool prng;

byte key[AES::DEFAULT_KEYLENGTH];
prng.GenerateBlock(key, sizeof(key));

byte iv[AES::BLOCKSIZE];
prng.GenerateBlock(iv, sizeof(iv));

string plain = "CFB Mode Test";
string cipher, encoded, recovered;

/*********************************\
\*********************************/

// Pretty print key
encoded.clear();
StringSource(key, sizeof(key), true,
new HexEncoder(
new StringSink(encoded)
) // HexEncoder
); // StringSource
cout << "key: " << encoded << endl;

// Pretty print iv
encoded.clear();
StringSource(iv, sizeof(iv), true,
new HexEncoder(
new StringSink(encoded)
) // HexEncoder
); // StringSource
cout << "iv: " << encoded << endl;

/*********************************\
\*********************************/

try
{
cout << "plain text: " << plain << endl;

CFB_Mode< AES >::Encryption e;
e.SetKeyWithIV(key, sizeof(key), iv);

// CFB mode must not use padding. Specifying
// a scheme will result in an exception
StringSource(plain, true,
new StreamTransformationFilter(e,
new StringSink(cipher)
) // StreamTransformationFilter
); // StringSource
}
catch(const CryptoPP::Exception& e)
{
cerr << e.what() << endl;
exit(1);
}

/*********************************\
\*********************************/

// Pretty print
encoded.clear();
StringSource(cipher, true,
new HexEncoder(
new StringSink(encoded)
) // HexEncoder
); // StringSource
cout << "cipher text: " << encoded << endl;

/*********************************\
\*********************************/

try
{
CFB_Mode< AES >::Decryption d;
d.SetKeyWithIV(key, sizeof(key), iv);

// The StreamTransformationFilter removes
// padding as required.
StringSource s(cipher, true,
new StreamTransformationFilter(d,
new StringSink(recovered)
) // StreamTransformationFilter
); // StringSource

cout << "recovered text: " << recovered << endl;
}
catch(const CryptoPP::Exception& e)
{
cerr << e.what() << endl;
exit(1);
}

/*********************************\
\*********************************/

return 0;
}



I read that its a dll Problem but i cant get along.

I Compiled Crypto++ with this (http://www.qtcentre.org/threads/28809-Compiling-amp-using-Crypto-with-mingw-version-of-Qt).

Hope you can help me.

Thx!

[pkj]

Have you copied the requisite crypto++ dll's against which you are linking into the application directory?

[amleto]

00005 doesnt sound like a dll problem - more likely a dodgy pointer ime.

have you debugged it? what is the call stack? what line is the exception from?