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196 lines
4.8 KiB
196 lines
4.8 KiB
//************************************************************************
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// Microsoft Corporation
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// Copyright(c) Microsoft Corp., 1994
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//
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//
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// Revision history:
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// 5/5/94 Created gurdeep
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//
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// This file uses 4 space tabs
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//************************************************************************
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#ifdef COMP_12K
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#define HISTORY_SIZE 16000
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#else
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#define HISTORY_SIZE (8192U) // Maximum back-pointer value, also used
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#endif
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#define MAX_HASH_OFFSET 60000
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#define HISTORY_MAX (HISTORY_SIZE -1) // Maximum back-pointer value, also used
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#define HASH_TABLE_SIZE 4096
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#define MAX_BACK_PTR 8511
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#define MAX_COMPRESSFRAME_SIZE 1600
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struct SendContext {
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int CurrentIndex ; // how far into the history buffer we are
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PUCHAR ValidHistory ; // how much of history is valid
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USHORT HashOffset;
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ULONG BundleFlags;
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// UCHAR CompressBuffer[MAX_COMPRESSFRAME_SIZE] ;
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USHORT HashTable[HASH_TABLE_SIZE];
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UCHAR History [1] ;
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} ;
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typedef struct SendContext SendContext ;
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struct RecvContext {
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#if DBG
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#define DEBUG_FENCE_VALUE 0xABABABAB
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ULONG DebugFence;
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#endif
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UCHAR *CurrentPtr ; // how far into the history buffer we are
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ULONG BundleFlags;
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ULONG HistorySize;
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UCHAR History [1] ;
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} ;
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typedef struct RecvContext RecvContext ;
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// Prototypes
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//
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UCHAR
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compress (
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UCHAR *CurrentBuffer,
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UCHAR *CompOutBuffer,
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ULONG *CurrentLength,
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SendContext *context);
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//UCHAR
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//compress (
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// UCHAR *CurrentBuffer,
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// ULONG *CurrentLength,
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// SendContext *context);
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int
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decompress (
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UCHAR *inbuf,
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int inlen,
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int start,
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UCHAR **output,
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int *outlen,
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RecvContext *context) ;
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void initsendcontext (SendContext *) ;
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void initrecvcontext (RecvContext *) ;
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VOID
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GetStartKeyFromSHA(
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PCRYPTO_INFO CryptoInfo,
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PUCHAR Challenge
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);
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VOID
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GetNewKeyFromSHA(
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PCRYPTO_INFO CryptoInfo
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);
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VOID
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GetMasterKey(
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PCRYPTO_INFO CryptoInfo,
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PUCHAR NTResponse
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);
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VOID
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GetAsymetricStartKey(
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PCRYPTO_INFO CryptoInfo,
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BOOLEAN IsSend
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);
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//
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// Other defines
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//
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#define COMPRESSION_PADDING 4
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#define PACKET_FLUSHED 0x80
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#define PACKET_AT_FRONT 0x40
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#define PACKET_COMPRESSED 0x20
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#define PACKET_ENCRYPTED 0x10
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/* Copyright (C) RSA Data Security, Inc. created 1993. This is an
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unpublished work protected as such under copyright law. This work
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contains proprietary, confidential, and trade secret information of
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RSA Data Security, Inc. Use, disclosure or reproduction without the
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express written authorization of RSA Data Security, Inc. is
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prohibited.
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*/
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#define A_SHA_DIGEST_LEN 20
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typedef struct {
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ULONG state[5]; /* state (ABCDE) */
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ULONG count[2]; /* number of UCHARs, msb first */
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unsigned char buffer[64]; /* input buffer */
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} A_SHA_COMM_CTX;
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typedef void (A_SHA_TRANSFORM) (ULONG [5], unsigned char [64]);
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void A_SHAInitCommon (A_SHA_COMM_CTX *);
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void A_SHAUpdateCommon(A_SHA_COMM_CTX *, UCHAR *, ULONG, A_SHA_TRANSFORM *);
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void A_SHAFinalCommon(A_SHA_COMM_CTX *, UCHAR[A_SHA_DIGEST_LEN],
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A_SHA_TRANSFORM *);
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VOID ByteReverse(UNALIGNED ULONG* Out, ULONG* In, ULONG Count);
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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ULONG FinishFlag;
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UCHAR HashVal[A_SHA_DIGEST_LEN];
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A_SHA_COMM_CTX commonContext;
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} A_SHA_CTX;
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void A_SHAInit(A_SHA_CTX *);
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void A_SHAUpdate(A_SHA_CTX *, unsigned char *, unsigned int);
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void A_SHAFinal(A_SHA_CTX *, unsigned char [A_SHA_DIGEST_LEN]);
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#ifdef __cplusplus
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}
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#endif
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/* F, G, H and I are basic SHA functions.
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*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) ((x) ^ (y) ^ (z))
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#define H(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
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#define I(x, y, z) ((x) ^ (y) ^ (z))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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*/
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#define ROUND(a, b, c, d, e, x, F, k) { \
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(e) += ROTATE_LEFT ((a), 5) + F ((b), (c), (d)) + (x) + k; \
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(b) = ROTATE_LEFT ((b), 30); \
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}
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#define FF(a, b, c, d, e, x) ROUND (a, b, c, d, e, x, F, 0x5a827999);
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#define GG(a, b, c, d, e, x) ROUND (a, b, c, d, e, x, G, 0x6ed9eba1);
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#define HH(a, b, c, d, e, x) ROUND (a, b, c, d, e, x, H, 0x8f1bbcdc);
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#define II(a, b, c, d, e, x) ROUND (a, b, c, d, e, x, I, 0xca62c1d6);
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void SHATransform(ULONG [5], unsigned char [64]);
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void SHAExpand(ULONG [80]);
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