mirror of
https://github.com/veracrypt/VeraCrypt
synced 2024-12-01 07:23:29 +01:00
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/*
|
|
Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
|
|
|
|
Governed by the TrueCrypt License 3.0 the full text of which is contained in
|
|
the file License.txt included in TrueCrypt binary and source code distribution
|
|
packages.
|
|
*/
|
|
|
|
#ifndef TC_HEADER_Core_RandomNumberGenerator
|
|
#define TC_HEADER_Core_RandomNumberGenerator
|
|
|
|
#include "Platform/Platform.h"
|
|
#include "Volume/Hash.h"
|
|
#include "Common/Random.h"
|
|
|
|
namespace VeraCrypt
|
|
{
|
|
class RandomNumberGenerator
|
|
{
|
|
public:
|
|
static void AddToPool (const ConstBufferPtr &buffer);
|
|
static void GetData (const BufferPtr &buffer, bool allowAnyLength = false) { GetData (buffer, false, allowAnyLength); }
|
|
static void GetDataFast (const BufferPtr &buffer, bool allowAnyLength = false) { GetData (buffer, true, allowAnyLength); }
|
|
static shared_ptr <Hash> GetHash ();
|
|
static bool IsEnrichedByUser () { return EnrichedByUser; }
|
|
static bool IsRunning () { return Running; }
|
|
static ConstBufferPtr PeekPool () { return Pool; }
|
|
static void SetEnrichedByUserStatus (bool enriched) { EnrichedByUser = enriched; }
|
|
static void SetHash (shared_ptr <Hash> hash);
|
|
static void Start ();
|
|
static void Stop ();
|
|
|
|
static const size_t PoolSize = RNG_POOL_SIZE;
|
|
|
|
protected:
|
|
static void AddSystemDataToPool (bool fast);
|
|
static void GetData (const BufferPtr &buffer, bool fast, bool allowAnyLength);
|
|
static void HashMixPool ();
|
|
static void Test ();
|
|
RandomNumberGenerator ();
|
|
|
|
static const size_t MaxBytesAddedBeforePoolHashMix = RANDMIX_BYTE_INTERVAL;
|
|
|
|
static Mutex AccessMutex;
|
|
static size_t BytesAddedSincePoolHashMix;
|
|
static bool EnrichedByUser;
|
|
static SecureBuffer Pool;
|
|
static shared_ptr <Hash> PoolHash;
|
|
static size_t ReadOffset;
|
|
static bool Running;
|
|
static size_t WriteOffset;
|
|
};
|
|
}
|
|
|
|
#endif // TC_HEADER_Core_RandomNumberGenerator
|