133 lines
2.6 KiB
C
133 lines
2.6 KiB
C
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1997-2001 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
ah.h
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
Contains AH specific structures
|
||
|
|
|
||
|
|
Author:
|
||
|
|
|
||
|
|
Sanjay Anand (SanjayAn) 2-January-1997
|
||
|
|
ChunYe
|
||
|
|
|
||
|
|
Environment:
|
||
|
|
|
||
|
|
Kernel mode
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef _AH_
|
||
|
|
#define _AH_
|
||
|
|
|
||
|
|
|
||
|
|
#define MD5DIGESTLEN 16
|
||
|
|
#define SHADIGESTLEN 20
|
||
|
|
#define AH_SIZE (sizeof(AH) + MD5DIGESTLEN * sizeof(UCHAR))
|
||
|
|
|
||
|
|
//
|
||
|
|
// State buffers for the individual algorithms
|
||
|
|
//
|
||
|
|
typedef struct _AlgoState {
|
||
|
|
union { // internal algo state
|
||
|
|
MD5_CTX as_md5ctx;
|
||
|
|
A_SHA_CTX as_shactx;
|
||
|
|
};
|
||
|
|
PSA_TABLE_ENTRY as_sa;
|
||
|
|
} ALGO_STATE, *PALGO_STATE;
|
||
|
|
|
||
|
|
typedef NTSTATUS
|
||
|
|
(*PALGO_INIT) (
|
||
|
|
PALGO_STATE pEntry,
|
||
|
|
ULONG Index
|
||
|
|
);
|
||
|
|
|
||
|
|
typedef NTSTATUS
|
||
|
|
(*PALGO_UPDATE) (
|
||
|
|
PALGO_STATE State,
|
||
|
|
PUCHAR Data,
|
||
|
|
ULONG Length
|
||
|
|
);
|
||
|
|
|
||
|
|
typedef NTSTATUS
|
||
|
|
(*PALGO_FINISH) (
|
||
|
|
PALGO_STATE State,
|
||
|
|
PUCHAR Data,
|
||
|
|
ULONG Index
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// Array of function ptrs for the AH authentication algorithms
|
||
|
|
//
|
||
|
|
typedef struct _auth_algorithm {
|
||
|
|
PALGO_INIT init; // ptr to init fn for alg.
|
||
|
|
PALGO_UPDATE update; // ptr to update fn for alg
|
||
|
|
PALGO_FINISH finish; // ptr to finish fn for alg
|
||
|
|
ULONG OutputLen; // Length (in u_int8s) of output
|
||
|
|
// data. MUST be a multiple of 4
|
||
|
|
} AUTH_ALGO, *PAUTH_ALGO;
|
||
|
|
|
||
|
|
|
||
|
|
#define NUM_AUTH_ALGOS (sizeof(auth_algorithms)/sizeof(AUTH_ALGO)-1)
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// The IPSEC AH payload
|
||
|
|
//
|
||
|
|
typedef struct _AH {
|
||
|
|
UCHAR ah_next;
|
||
|
|
UCHAR ah_len;
|
||
|
|
USHORT ah_reserved;
|
||
|
|
tSPI ah_spi;
|
||
|
|
ULONG ah_replay;
|
||
|
|
} AH, *PAH;
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
IPSecCreateAH(
|
||
|
|
IN PUCHAR pIPHeader,
|
||
|
|
IN PVOID pData,
|
||
|
|
IN PSA_TABLE_ENTRY pSA,
|
||
|
|
IN ULONG Index,
|
||
|
|
OUT PVOID *ppNewData,
|
||
|
|
OUT PVOID *ppSCContext,
|
||
|
|
OUT PULONG pExtraBytes,
|
||
|
|
IN ULONG HdrSpace,
|
||
|
|
IN BOOLEAN fSrcRoute,
|
||
|
|
IN BOOLEAN fCryptoOnly
|
||
|
|
);
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
IPSecVerifyAH(
|
||
|
|
IN PUCHAR *pIPHeader,
|
||
|
|
IN PVOID pData,
|
||
|
|
IN PSA_TABLE_ENTRY pSA,
|
||
|
|
IN ULONG Index,
|
||
|
|
OUT PULONG pExtraBytes,
|
||
|
|
IN BOOLEAN fSrcRoute,
|
||
|
|
IN BOOLEAN fCryptoDone,
|
||
|
|
IN BOOLEAN fFastRcv
|
||
|
|
);
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
IPSecGenerateHash(
|
||
|
|
IN PUCHAR pIPHeader,
|
||
|
|
IN PVOID pData,
|
||
|
|
IN PSA_TABLE_ENTRY pSA,
|
||
|
|
IN PUCHAR pAHData,
|
||
|
|
IN BOOLEAN fMuteDest,
|
||
|
|
IN BOOLEAN fIncoming,
|
||
|
|
IN PAUTH_ALGO pAlgo,
|
||
|
|
IN ULONG Index
|
||
|
|
);
|
||
|
|
|
||
|
|
#endif _AH_
|
||
|
|
|