MacOS pseudo-random entropy collector.

Submitted by: Yoram Meroz <yoram@mail.idrive.com>
Reviewed by: <appro>

MacOS/Randomizer.h

@@ -0,0 +1,43 @@
+
+//	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;
+};