On Mon April 27 2009, AngelWarrior wrote:
> I have a file containing 549 bytes of data. When I try to encrypt the data,I
> get only a partial encrypted data in the range of 113 to 140 bytes in
> different runs.When I decrypt the data I get the partial data.
>
> This is a QT application OpenSSL 0.9.8j windows
>
> int main(int argc, char** argv )
> {
>
> QApplication app(argc , argv);
> QFile inputfile("input.xml");
> stin.open(stdin ,QIODevice::ReadOnly);
> stout.open(stdout,QIODevice::WriteOnly);
>
> outLine("Enter key\n");
> QString key=readIn();
> inputfile.open(QIODevice::ReadOnly);
> QByteArray temp = inputfile.readAll();
> BF_KEY ks;
> BF_set_key( &ks, key.length(), (const unsigned
> char*)(key.toAscii().data()));
>
> char ivec[8];
> memset(ivec,0,8);
> int num=0;
>
> char *out = new char[temp.length()];
>
> BF_cfb64_encrypt((unsigned char*)temp.data(), (unsigned char*)(out),
> (unsigned long)temp.length(), &ks, (unsigned char*)ivec, &num,
> BF_ENCRYPT );
>
>
> outLine("Encrypted Data\n");
> outLine("-----------------------------------------------\n");
> outLine(QString().sprintf("Encrypt length = %d\n",strlen(out)));
> outLine(QString(out));
> outLine("\n");
>
> readIn();
>
> QFile outputfile("output.xml");
> outputfile.open(QIODevice::WriteOnly);
> outputfile.write(out,strlen(out));
>
>
> QByteArray entemp(out);
> memset(out,0,temp.length());
> memset(ivec,0,8);
> num=0;
> //out = new char[entemp.length()];
>
> BF_cfb64_encrypt((unsigned char*)entemp.data(), (unsigned char*)(out),
> (long)entemp.length(), &ks, (unsigned char*)ivec, &num,
> BF_DECRYPT );
>
> outLine("Decrypted Data\n");
> outLine("-----------------------------------------------\n");
> outLine(QString().sprintf("Decrypt length = %d\n",strlen(out)));
Encrypted data != C-string format; \0 is a legal data value, not a string
terminator.
> outLine(QString(out));
> }
>
> --------------------------------------------------------
> Enter key
> temp
> Encrypted Data
> -----------------------------------------------
> Encrypt length = 180
> ?ƒ6i[y╔╒⌂+ñßh÷≥┴W¿┼XE╕û─ºæ▓iÜ║↑┴K♦8)zⁿö♠j⌐┤▐⌡ë┐FMG╡^δå,♀p[⌐«╥∞Aεën
> u%↑&Aƒ╖½1Φ║÷;α┘╦▬á▼]q{ █}╕9b▌$Åp╗▐D½k?ε/ôH(☺ªuÑ↓ñ╖¿jåHV┘¥zεφ│wc
> ╙l■d▲▀¿úu1╜iPα
>
> Decrypted Data
> -----------------------------------------------
> Decrypt length = 180
> <input>
> <name>hello how are you doing</name>
> <sunday>yes</sunday>
> <monday>no</monday>
> <tuesday>no</tuesday>
> <wednesday>no</wednesday>
> <thursday>no</thursday>
> <friday>no</fri
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