Botan  1.11.15
src/lib/entropy/hres_timer/hres_timer.h
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00001 /*
00002 * High Resolution Timestamp Entropy Source
00003 * (C) 1999-2009 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_ENTROPY_SRC_HRES_TIMER_H__
00009 #define BOTAN_ENTROPY_SRC_HRES_TIMER_H__
00010 
00011 #include <botan/entropy_src.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * Entropy source using high resolution timers
00017 *
00018 * @note Any results from timers are marked as not contributing entropy
00019 * to the poll, as a local attacker could observe them directly.
00020 */
00021 class High_Resolution_Timestamp : public EntropySource
00022    {
00023    public:
00024       std::string name() const { return "High Resolution Timestamp"; }
00025       void poll(Entropy_Accumulator& accum);
00026    };
00027 
00028 }
00029 
00030 #endif