From Forum Nokia Wiki

ID	...	Creation date	10 April 2009
Platform	S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition	Tested on devices	S60 Emulator
Category	Qt for S60	Subcategory	UI

Keywords (APIs, classes, methods, functions): QCryptographicHash,QByteArray

Introduction

The QCryptographicHash class provides a way to generate cryptographic hashes from binary or text data.

For more information, see Wikipedia on http://en.wikipedia.org/wiki/Cryptographic_hash_function

Preconditions

• Download and Install latest version Qt for Symbian - Installation packages which has links on how to install the latest version

Some Related Function

• Adds the data to the cryptographic hash:

QByteArray string = "Nokia";
QCryptographicHash hasher(QCryptographicHash::Sha1);
hasher.addData(string);

• Returns the final hash value.

QByteArray string1=hasher.result();

Source Code

Main.cpp

#include <QtGui/QApplication>
#include <QWidget>
#include <QHBoxLayout>
#include <QCryptographicHash>
#include <QString>
#include <QByteArray>
#include <QLabel>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget *win=new QWidget();
    QHBoxLayout *lay=new QHBoxLayout();
    QLabel *lbl=new QLabel();
    QLabel *lbl1=new QLabel("Encrypted Text:");
    lbl1->setBuddy(lbl);
    QByteArray string="Nokia";
    QCryptographicHash *hash=new QCryptographicHash(QCryptographicHash::Md4);
    hash->addData(string);
    QByteArray string1=hash->result();
    lbl->setText(string1); // TODO: use e.g. toHex or toBase64
    lay->addWidget(lbl1);
    lay->addWidget(lbl);
    win->setLayout(lay);
    win->setStyleSheet("* { background-color:rgb(199,147,88); padding: 7px ;   color:rgb(255,255,255)}");
    win->showMaximized();
    return a.exec();
}

ScreenShot

More About QCryptographicHash