37 lines
874 B
C
37 lines
874 B
C
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1997.
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//
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// File: rng.h
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//
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// Contents: Functions that are used to generate rnadom numbers
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//
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// Classes:
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//
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// Functions: GenerateRandomBits
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// GatherRandomBits
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//
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//
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// History: 12-19-97 v-sbhatt Created
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//
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//----------------------------------------------------------------------------
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#ifndef _RNG_H_
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#define _RNG_H_
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#define A_SHA_DIGEST_LEN 20
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#define RAND_CTXT_LEN 60
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#define RC4_REKEY_PARAM 500 // rekey every 500 bytes
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typedef struct tagRandContext
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{
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DWORD dwBitsFilled;
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BYTE rgbBitBuffer[RAND_CTXT_LEN];
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} RAND_CONTEXT, *PRAND_CONTEXT;
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VOID GenerateRandomBits(PUCHAR pbBuffer, ULONG dwLength);
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void GatherRandomBits(PRAND_CONTEXT prandContext);
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#endif //_RNG_H_
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