buff[1024] != out[512 + 8];
Lee Melville wrote:
> I am trying to encrypt a file and have tried allsorts to get the thing
> working. What am i doing wrong? It seems to corrupt within the while llop
> that updates the encryption.
>
> thanks in advance
>
> Lee Melville
>
> Here is the code
>
> //--------------------------------------------------------------------------
> ---------
> OpenSSL_add_all_algorithms();
>
> char key[EVP_MAX_KEY_LENGTH];
> char iv[EVP_MAX_IV_LENGTH];
> EVP_CIPHER_CTX ctx;
> unsigned char out[512+8];
> int outl;
> char passwd[] = "password";
> EVP_CIPHER *ciph;
> //EVP_MD *md;
> int i;
> char buff[1024];
>
> CFile fileIn;
> fileIn.Open("A:\\test.txt", CFile::typeBinary | CFile::modeRead, NULL);
> CFile fileOut;
> fileOut.Open("A:\\test.enc", CFile::typeBinary | CFile::modeWrite, NULL);
>
> ciph = EVP_bf_cbc();
> EVP_BytesToKey(ciph,EVP_md5(),NULL,(unsigned char
> *)passwd,strlen(passwd),1,(unsigned char *)key,(unsigned char *)iv);
> cout << "begin init:" << endl;
> EVP_EncryptInit(&ctx, ciph, (unsigned char *)key, (unsigned char *)iv);
> cout << "begin update:" << endl;
>
> i=0;
> //fileIn.Read(&buff,0);
> i++;
> while (i = (fileIn.Read(buff, sizeof buff)) != NULL){
> cout << "test: " << buff << " : " << outl << endl;
> EVP_EncryptUpdate(&ctx, out, &outl, (unsigned char *)buff, 512);
> fileOut.Write(&out, outl);
> i++;
> }
>
> EVP_EncryptFinal(&ctx, out, &outl);
> fileOut.Write(&out, outl);
> fileIn.Close();
> fileOut.Close();
>
> //-------------------------------------------------------------
>
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