Qt Cryptographic Architecture: base64test.cpp

Qt Cryptographic Architecture

base64test.cpp

The code below shows some simple operations on a QCA::Base64 object, converting between QCA::SecureArray and QString.

/*
Copyright (C) 2004-2005 Brad Hards <bradh@frogmouth.net>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// QtCrypto has the declarations for all of QCA
#include <QtCrypto>
#include <QCoreApplication>
#include <iostream>
#ifdef QT_STATICPLUGIN
#include "import_plugins.h"
#endif
int main(int argc, char **argv)
{
QCoreApplication(argc, argv);
// the Initializer object sets things up, and
// also does cleanup when it goes out of scope
QCA::Initializer init;
// we use the first argument as the data to encode
// if an argument is provided. Use "hello" if no argument
QByteArray arg; // empty array
arg.append((argc >= 2) ? argv[1] : "hello");
// create our object, which does encoding by default
// QCA::Base64 encoder(QCA::Encode); is equivalent
QCA::Base64 encoder;
// This does the actual conversion (encoding).
// You might prefer to use encoder.encode(); and have
// it return a QCA::SecureArray, depending on your needs
QString encoded = encoder. arrayToString(arg);
std::cout << arg.data() << " in base64 encoding is ";
std::cout << encoded.toLatin1().data() << std::endl;
// This time, we'll create an object to decode base64. We
// could also have reused the existing object, calling
// clear(); and setup(QCA::Decode); on it.
QCA::Base64 decoder(QCA::Decode);
// This time, we convert a QString into a QString
QString decoded = decoder. decodeString(encoded);
std::cout << encoded.toLatin1().data() << " decoded from base64 is ";
std::cout << decoded.toLatin1().data() << std::endl;
return 0;
}