libcryfs/random/RandomGenerator.h

40 lines
957 B
C++

#ifndef MESSMER_CPPUTILS_RANDOM_RANDOMGENERATOR_H
#define MESSMER_CPPUTILS_RANDOM_RANDOMGENERATOR_H
#include "../data/FixedSizeData.h"
#include "../data/Data.h"
namespace cpputils {
class RandomGenerator {
public:
RandomGenerator();
template<size_t SIZE> FixedSizeData<SIZE> getFixedSize();
Data get(size_t size);
protected:
virtual void _get(void *target, size_t bytes) = 0;
private:
static std::mutex _mutex;
DISALLOW_COPY_AND_ASSIGN(RandomGenerator);
};
inline RandomGenerator::RandomGenerator() {
}
template<size_t SIZE> inline FixedSizeData<SIZE> RandomGenerator::getFixedSize() {
FixedSizeData<SIZE> result = FixedSizeData<SIZE>::Null();
_get(result.data(), SIZE);
return result;
}
inline Data RandomGenerator::get(size_t size) {
Data result(size);
_get(result.data(), size);
return result;
}
}
#endif