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78 lines
2.9 KiB
C
78 lines
2.9 KiB
C
/*
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Legal Notice: Some portions of the source code contained in this file were
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derived from the source code of TrueCrypt 7.1a, which is
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Copyright (c) 2003-2012 TrueCrypt Developers Association and which is
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governed by the TrueCrypt License 3.0, also from the source code of
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Encryption for the Masses 2.02a, which is Copyright (c) 1998-2000 Paul Le Roux
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and which is governed by the 'License Agreement for Encryption for the Masses'
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Modifications and additions to the original source code (contained in this file)
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and all other portions of this file are Copyright (c) 2013-2017 IDRIX
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and are governed by the Apache License 2.0 the full text of which is
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contained in the file License.txt included in VeraCrypt binary and source
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code distribution packages. */
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#include "Crypto.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* RNG defines & pool pointers */
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#define RNG_POOL_SIZE 320 // Must be divisible by the size of the output of each of the implemented hash functions. (in bytes)
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#if RNG_POOL_SIZE % SHA512_DIGESTSIZE || RNG_POOL_SIZE % WHIRLPOOL_DIGESTSIZE || RNG_POOL_SIZE % BLAKE2S_DIGESTSIZE
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#error RNG_POOL_SIZE must be divisible by the size of the output of each of the implemented hash functions.
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#endif
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#define RANDOMPOOL_ALLOCSIZE RNG_POOL_SIZE
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// After every RANDMIX_BYTE_INTERVAL-th byte written to the pool, the pool mixing function is applied to the entire pool
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#define RANDMIX_BYTE_INTERVAL 16
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// FastPoll interval (in milliseconds)
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#define FASTPOLL_INTERVAL 500
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void RandAddInt ( unsigned __int32 x );
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int Randinit ( void );
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int RandinitWithCheck ( int* pAlreadyInitialized);
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void RandStop (BOOL freePool);
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BOOL IsRandomNumberGeneratorStarted ();
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void RandSetHashFunction ( int hash_algo_id );
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int RandGetHashFunction (void);
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void SetRandomPoolEnrichedByUserStatus (BOOL enriched);
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BOOL IsRandomPoolEnrichedByUser ();
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BOOL Randmix ( void );
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void RandaddBuf ( void *buf , int len );
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BOOL FastPoll ( void );
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BOOL SlowPoll ( void );
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/* Get len random bytes from the pool (max. RNG_POOL_SIZE bytes per a single call) */
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BOOL RandgetBytes ( void* hwndDlg, unsigned char *buf , int len, BOOL forceSlowPoll );
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/* Get len random bytes from the pool.
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* If allowAnyLength is FALSE, then len must be less or equal to RNG_POOL_SIZE
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* If allowAnyLength is TRUE, then len can have any positive value
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*/
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BOOL RandgetBytesFull ( void* hwndDlg, unsigned char *buf , int len, BOOL forceSlowPoll , BOOL allowAnyLength);
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#ifdef _WIN32
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extern BOOL volatile bFastPollEnabled;
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extern BOOL volatile bRandmixEnabled;
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extern DWORD CryptoAPILastError;
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extern DWORD ProcessedMouseEventsCounter;
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BOOL RandpeekBytes ( void* hwndDlg, unsigned char *buf , int len, DWORD* mouseCounter );
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void RandAddInt64 ( unsigned __int64 x );
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LRESULT CALLBACK MouseProc ( int nCode , WPARAM wParam , LPARAM lParam );
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LRESULT CALLBACK KeyboardProc ( int nCode , WPARAM wParam , LPARAM lParam );
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static unsigned __stdcall PeriodicFastPollThreadProc (void *dummy);
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#endif
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#ifdef __cplusplus
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}
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#endif
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