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56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/*
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Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
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Governed by the TrueCrypt License 3.0 the full text of which is contained in
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the file License.txt included in TrueCrypt binary and source code distribution
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packages.
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*/
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#ifndef TC_HEADER_Core_RandomNumberGenerator
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#define TC_HEADER_Core_RandomNumberGenerator
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#include "Platform/Platform.h"
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#include "Volume/Hash.h"
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#include "Common/Random.h"
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namespace TrueCrypt
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{
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class RandomNumberGenerator
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{
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public:
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static void AddToPool (const ConstBufferPtr &buffer);
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static void GetData (const BufferPtr &buffer) { GetData (buffer, false); }
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static void GetDataFast (const BufferPtr &buffer) { GetData (buffer, true); }
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static shared_ptr <Hash> GetHash ();
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static bool IsEnrichedByUser () { return EnrichedByUser; }
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static bool IsRunning () { return Running; }
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static ConstBufferPtr PeekPool () { return Pool; }
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static void SetEnrichedByUserStatus (bool enriched) { EnrichedByUser = enriched; }
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static void SetHash (shared_ptr <Hash> hash);
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static void Start ();
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static void Stop ();
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static const size_t PoolSize = RNG_POOL_SIZE;
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protected:
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static void AddSystemDataToPool (bool fast);
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static void GetData (const BufferPtr &buffer, bool fast);
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static void HashMixPool ();
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static void Test ();
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RandomNumberGenerator ();
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static const size_t MaxBytesAddedBeforePoolHashMix = RANDMIX_BYTE_INTERVAL;
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static Mutex AccessMutex;
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static size_t BytesAddedSincePoolHashMix;
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static bool EnrichedByUser;
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static SecureBuffer Pool;
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static shared_ptr <Hash> PoolHash;
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static size_t ReadOffset;
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static bool Running;
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static size_t WriteOffset;
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};
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}
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#endif // TC_HEADER_Core_RandomNumberGenerator
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