best way to use AES Encryption in QT

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

LIBS += -L$$PWD/../../../../../Botan/lib/ -lbotan

I test what you say
this time i get even more error

my .pro

LIBS += -L$$PWD/../../../../../Botan/lib/ -lbotan

INCLUDEPATH += $$PWD/../../../../../Botan/include
DEPENDPATH += $$PWD/../../../../../Botan/include

my full code:

#include "mainwindow2.h"
#include "ui_mainwindow2.h"
#include "botan/botan.h"
#include "botan/pipe.h"
#include "botan/aes.h"
#include "botan/filters.h"

MainWindow2::MainWindow2(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow2)
{
    ui->setupUi(this);
    Botan::InitializationVector init;
}

MainWindow2::~MainWindow2()
{
    delete ui;
}

void MainWindow2::on_pushButton_clicked()
{
    Botan::AutoSeeded_RNG rng;
    Botan::SymmetricKey key(rng,32);
    Botan::InitializationVector IV(rng,16);
    Botan::Pipe pipe(Botan::get_cipher("AES-256/CBC",key,IV,Botan::ENCRYPTION),new Botan::Hex_Encoder);
    pipe.process_msg(ui->textEdit_input->toPlainText().toStdString());
    std::string m1=pipe.read_all_as_string(0);
    ui->textEdit_output_E->setText(QString::fromStdString(m1));
}

[SGaist]

Are you sure that the library was built for thé same architecture as the Qt version you are using ?

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

Are you sure that the library was built for thé same architecture as the Qt version you are using ?

i see a video in yotube use botan 1.10.8 on QT 4.8.5
you think its not support new verson of qt?

[SGaist]

You should use the latest version of botan for security reasons.

In any case, it's completely unrelated to my question: aare the architectures of your botan build and Qt the same ?

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

You should use the latest version of botan for security reasons.

In any case, it's completely unrelated to my question: aare the architectures of your botan build and Qt the same ?

sorry for this question, but how i cant found out (im new at c++ and qt)

[SGaist]

You can use dumpbin as explained here

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

You can use dumpbin as explained here

i check botan-ci.exe, here is result

and here is botan.dll

both is 64bit
and also my qt compiler is 64bit too

[SGaist]

Did you also compile botan with MinGW ?

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

Did you also compile botan with MinGW ?

no i compile it with nmake
i need to compile it with MiniGW?

[SGaist]

If you used nmake, it means that in fact you used Visual Studio to build botan. So there's your issue. You can't mix C++ code built with MinGW with C++ code built with Visual Studio.

Tow options here:

• rebuild botan using MinGW
• change your Qt version and use the one that matches your Visual Studio version

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

If you used nmake, it means that in fact you used Visual Studio to build botan. So there's your issue. You can't mix C++ code built with MinGW with C++ code built with Visual Studio.

Tow options here:

• rebuild botan using MinGW
• change your Qt version and use the one that matches your Visual Studio version

you recommend what version of qt for this?
i think its beter to compile botan again..

[SGaist]

As I said: the one matching your current version of Visual Studio.

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

As I said: the one matching your current version of Visual Studio.

sorry i made a mistake
I mean, which version of mingw do you recommend?

[SGaist]

Use the one from your Qt installation.

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

Use the one from your Qt installation.

ok i start make with mingw32-make.exe located in Qt\Tools\mingw810_64\bin

[saeid0034]

@SGaist said in best way to use AES Encryption in QT:

Use the one from your Qt installation.

thanks for all your help
by build botan with miniGW