I can't see what valgrind is complaining about. I think it is reporting a
false positive. Please contact valgrind's developer/support forum and see
if this is a bug in their product.
On Tue, Nov 02, 2004 at 10:01:28AM +0800, tikcireviva wrote:
> Hi Guys,
>
> This is the first time I've posted an e-mail in
>
> I've tried to compile cryptopp under my linux box, and I have also used
> it in my little program as well.
> What I concern in here is that, when I ran my program under valgrind
> (the memory leak checking tool). It gave me the following error messages.
>
> ==8113== Thread 7:
> ==8113== Use of uninitialised value of size 4
> ==8113== at 0x80A5133: CryptoPP::RawDES::RawProcessBlock(unsigned&,
> unsigned&) const (des.cpp:328)
> ==8113== by 0x80A5304:
> CryptoPP::DES_EDE2::Base::ProcessAndXorBlock(unsigned char const*, unsigned
> char const*, unsigned char*) const (des.cpp:361)
> ==8113== by 0x80EA250:
> CryptoPP::BlockTransformation::ProcessBlock(unsigned
> char*) const (cryptlib.h:435)
> ==8113== by 0x814E293: CryptoPP::CBC_Encryption::ProcessBlocks(unsigned
> char*, unsigned char const*, unsigned) (modes.cpp:169)
> ==8113==
>
> I wonder if I am doing anything wrong during the library compilation or
> using the cryptopp functions.
> And here is my coding and rest of the information for my linux box.
>
> int myCrypt::encryption(unsigned char* msg,
> unsigned int msglen,
> unsigned char* cipherBlock,
> unsigned int cipherSize)
> {
> // Create Array Sink
> ArraySink *pCipherSink = new ArraySink((byte*)cipherBlock,
> MAX_ENCRYPT_BLOCK_SIZE);
> if(pCipherSink == NULL)
> {
> printf("Cannot allocate memory for ArraySink\n");
> return 0; // zero or -1
> }
> DefaultEncryptorWithMAC encryptor(m_key, pCipherSink);
>
> // Encrypt the msg block
> encryptor.Put((byte*)msg, msglen);
> encryptor.MessageEnd();
>
> // Read data from the sink
> int rtnCipherSize = pCipherSink->TotalPutLength();
>
> // Delete encryptor and sink
> pCipherSink = NULL;
> delete pCipherSink;
> return rtnCipherSize;
> }
>
> version of Crypto++ -- 5.2.1
>
> compiler --
> Reading specs from /usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.3.2/specs
> Configured with: ../configure --prefix=/usr --libdir=/usr/lib
> --with-slibdir=/lib --mandir=/usr/share/man --infodir=/usr/share/info
> --enable-shared --enable-threads=posix --disable-checking
> --enable-long-long --enable-__cxa_atexit --enable-clocale=gnu
> --enable-languages=c,c++,ada,f77,objc,java,pascal
> --host=i586-mandrake-linux-gnu --with-system-zlib
> Thread model: posix
> gcc version 3.3.2 (Mandrake Linux 10.0 3.3.2-6mdk)
>
> operating system --
> Linux mandrake10 2.6.3-7mdk #1 Wed Mar 17 15:56:42 CET 2004 i686 unknown
> unknown GNU/Linux
>
> I am really appreciate yours help. Guys, please comment on it, and I
> will be glad to have some discussion though. Thank you very much.
>
> - tikviva
>
>
>
