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67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
/*
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Copyright (C) 2004, 2006 Brad Hards <bradh@frogmouth.net>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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// QtCrypto/QtCrypto has the declarations for all of QCA
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#include <QtCrypto>
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#include <iostream>
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int main(int argc, char **argv)
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{
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QCoreApplication app(argc, argv);
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qDebug() << "This example generates random numbers";
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// the Initializer object sets things up, and
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// also does cleanup when it goes out of scope
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QCA::Initializer init;
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int randInt;
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// This is the standard way to generate a random integer.
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randInt = QCA::Random::randomInt();
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qDebug() << "A random number: " << randInt;
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// If you wanted a random character (octet), you could
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// use something like:
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unsigned char randChar;
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randChar = QCA::Random::randomChar();
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// It might not be printable, so this may not produce output
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std::cout << "A random character: " << randChar << std::endl;
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QCA::SecureArray tenBytes(10);
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// If you need more random values, you may want to
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// get an array, as shown below.
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tenBytes = QCA::Random::randomArray(10);
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// To make this viewable, we convert to hexadecimal.
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std::cout << "A random 10 byte array (in hex): ";
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std::cout << QCA::Hex().arrayToString(tenBytes).toAscii().data() << std::endl;
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// Under some circumstances, you may want to create a
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// Random object, rather than a static public member function.
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// This isn't normally the easiest way, but it does work
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QCA::Random myRandomObject;
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randChar = myRandomObject.nextByte();
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tenBytes = myRandomObject.nextBytes(10);
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return 0;
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}
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