How to calculate hash for a text using QCryptographicHash in Qt
jimgilmour1
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==Preconditions== | ==Preconditions== | ||
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| − | + | * Download and Install latest version [[Qt for Symbian - Installation packages]] which has links on how to install the latest version | |
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== Some Related Function == | == Some Related Function == | ||
Revision as of 12:43, 31 October 2009
Article Metadata
Tested with
Devices(s): S60 Emulator
Compatibility
Platform(s): S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition
Article
Keywords: QCryptographicHash,QByteArray
Created: (10 Apr 2009)
Last edited: jimgilmour1
(31 Oct 2009)
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
