text: 
  //	Gathers unpredictable system data to be used for generating
  //	random bits
  
  #include <MacTypes.h>
  
  class CRandomizer
  {
  public:
  	CRandomizer (void);
  	void PeriodicAction (void);
  	
  private:
  
  	// Private calls
  
  	void		AddTimeSinceMachineStartup (void);
  	void		AddAbsoluteSystemStartupTime (void);
  	void		AddAppRunningTime (void);
  	void		AddStartupVolumeInfo (void);
  	void		AddFiller (void);
  
  	void		AddCurrentMouse (void);
  	void		AddNow (double millisecondUncertainty);
  	void		AddBytes (void *data, long size, double entropy);
  	
  	void		GetTimeBaseResolution (void);
  	unsigned long	SysTimer (void);
  
  	// System Info	
  	bool		mSupportsLargeVolumes;
  	bool		mIsPowerPC;
  	bool		mIs601;
  	
  	// Time info
  	double		mTimebaseTicksPerMillisec;
  	unsigned long	mLastPeriodicTicks;
  	
  	// Mouse info
  	long		mSamplePeriod;
  	Point		mLastMouse;
  	long		mMouseStill;
  };
  