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