random.cc
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#include <qpdf/QUtil.hh>
#include <qpdf/InsecureRandomDataProvider.hh>
#include <qpdf/SecureRandomDataProvider.hh>
#include <iostream>
class BogusRandomDataProvider: public RandomDataProvider
{
public:
virtual ~BogusRandomDataProvider()
{
}
BogusRandomDataProvider()
{
}
virtual void provideRandomData(unsigned char* data, size_t len)
{
for (size_t i = 0; i < len; ++i)
{
data[i] = static_cast<unsigned char>(i & 0xff);
}
}
};
int main()
{
long r1 = QUtil::random();
long r2 = QUtil::random();
if (r1 == r2)
{
std::cout << "fail: two randoms were the same\n";
}
InsecureRandomDataProvider irdp;
irdp.provideRandomData(reinterpret_cast<unsigned char*>(&r1), 4);
irdp.provideRandomData(reinterpret_cast<unsigned char*>(&r2), 4);
if (r1 == r2)
{
std::cout << "fail: two insecure randoms were the same\n";
}
SecureRandomDataProvider srdp;
srdp.provideRandomData(reinterpret_cast<unsigned char*>(&r1), 4);
srdp.provideRandomData(reinterpret_cast<unsigned char*>(&r2), 4);
if (r1 == r2)
{
std::cout << "fail: two secure randoms were the same\n";
}
BogusRandomDataProvider brdp;
QUtil::setRandomDataProvider(&brdp);
r1 = QUtil::random();
r2 = QUtil::random();
if (r1 != r2)
{
std::cout << "fail: two bogus randoms were different\n";
}
unsigned char buf[4];
QUtil::initializeWithRandomBytes(buf, 4);
if (! ((buf[0] == 0) &&
(buf[1] == 1) &&
(buf[2] == 2) &&
(buf[3] == 3)))
{
std::cout << "fail: bogus random didn't provide correct bytes\n";
}
std::cout << "random: end of tests\n";
return 0;
}