#ifndef CPPCMS_URANDOM_H

#define CPPCMS_URANDOM_H

#include <cppcms/defs.h>

#include <booster/hold_ptr.h>

#include <booster/noncopyable.h>

namespace cppcms {

///

/// \brief High entropy random number generator

///

/// This is cryptographic random number generator that uses /dev/urandom on POSIX platforms

/// and CryptoAPI's CryptGenRandom function under MS Windows

///

class CPPCMS_API urandom_device : public booster::noncopyable {

public:

///

/// Create a new random number generator

///

urandom_device();

///

/// Destory it

///

~urandom_device();

///

/// Fill a buffer pointer by \a ptr of \a n bytes with random numbers

///

void generate(void *ptr,unsigned n);

private:

struct _data;

booster::hold_ptr<_data> d;

};

}

#endif