1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
*
* This code was written by Angelos D. Keromytis in Athens, Greece, in
* February 2000. Network Security Technologies Inc. (NSTI) kindly
* supported the development of this code.
*
* Copyright (c) 2000 Angelos D. Keromytis
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all source code copies of any software which is or includes a copy or
* modification of this software.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#ifndef _CRYPTO_CRYPTO_H_
#define _CRYPTO_CRYPTO_H_
/* Some initial values */
#define CRYPTO_DRIVERS_INITIAL 4
#define CRYPTO_SW_SESSIONS 32
#ifndef CRYPTO_MAX_CACHED
#define CRYPTO_MAX_CACHED 128
#endif
/* HMAC values */
#define HMAC_BLOCK_LEN 64
#define HMAC_IPAD_VAL 0x36
#define HMAC_OPAD_VAL 0x5C
/* Encryption algorithm block sizes */
#define DES_BLOCK_LEN 8
#define DES3_BLOCK_LEN 8
#define BLOWFISH_BLOCK_LEN 8
#define SKIPJACK_BLOCK_LEN 8
#define CAST128_BLOCK_LEN 8
#define EALG_MAX_BLOCK_LEN 8 /* Keep this updated */
/* Maximum hash algorithm result length */
#define AALG_MAX_RESULT_LEN 20 /* Keep this updated */
#define CRYPTO_DES_CBC 1
#define CRYPTO_3DES_CBC 2
#define CRYPTO_BLF_CBC 3
#define CRYPTO_CAST_CBC 4
#define CRYPTO_SKIPJACK_CBC 5
#define CRYPTO_MD5_HMAC96 6
#define CRYPTO_SHA1_HMAC96 7
#define CRYPTO_RIPEMD160_HMAC96 8
#define CRYPTO_MD5_KPDK 9
#define CRYPTO_SHA1_KPDK 10
#define CRYPTO_ALGORITHM_MAX 10 /* Keep this updated */
/* Standard initialization structure beginning */
struct cryptoini
{
int cri_alg; /* Algorithm to use */
int cri_klen; /* Key length, in bits */
int cri_rnd; /* Algorithm rounds, where relevant */
caddr_t cri_key; /* key to use */
u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */
struct cryptoini *cri_next;
};
/* Describe boundaries of a single crypto operation */
struct cryptodesc
{
int crd_skip; /* How many bytes to ignore from start */
int crd_len; /* How many bytes to process */
int crd_inject; /* Where to inject results, if applicable */
int crd_flags;
#define CRD_F_ENCRYPT 0x1 /* Set when doing encryption */
#define CRD_F_IV_PRESENT 0x2 /* When encrypting, IV is already in
place, so don't copy. */
#define CRD_F_IV_EXPLICIT 0x4 /* IV explicitly provided */
struct cryptoini CRD_INI; /* Initialization/context data */
#define crd_iv CRD_INI.cri_iv
#define crd_key CRD_INI.cri_key
#define crd_rnd CRD_INI.cri_rnd
#define crd_alg CRD_INI.cri_alg
#define crd_klen CRD_INI.cri_klen
struct cryptodesc *crd_next;
};
/* Structure describing complete operation */
struct cryptop
{
u_int64_t crp_sid; /* Session ID */
int crp_ilen; /* Input data total length */
int crp_olen; /* Result total length (unused for now) */
int crp_alloctype; /* Type of buf to allocate if needed */
int crp_etype; /* Error type (zero means no error).
* All error codes except EAGAIN
* indicate possible data corruption (as in,
* the data have been touched). On all
* errors, the crp_sid may have changed
* (reset to a new one), so the caller
* should always check and use the new
* value on future requests.
*/
int crp_flags;
#define CRYPTO_F_IMBUF 0x0001 /* Input is an mbuf chain, otherwise contig */
caddr_t crp_buf; /* Data to be processed */
caddr_t crp_opaque1;/* Opaque pointer, passed along */
caddr_t crp_opaque2;/* Opaque pointer, passed along */
caddr_t crp_opaque3;/* Opaque pointer, passed along */
caddr_t crp_opaque4;/* Opaque pointer, passed along */
struct cryptodesc *crp_desc; /* Linked list of processing descriptors */
int (*crp_callback) (struct cryptop *); /* Callback function */
struct cryptop *crp_next;
};
#define CRYPTO_BUF_CONTIG 0x1
#define CRYPTO_BUF_MBUF 0x2
#define CRYPTO_OP_DECRYPT 0x0
#define CRYPTO_OP_ENCRYPT 0x1
/* Crypto capabilities structure */
struct cryptocap
{
u_int32_t cc_sessions;
u_int8_t cc_alg[CRYPTO_ALGORITHM_MAX + 1]; /* Supported */
u_int8_t cc_flags;
#define CRYPTOCAP_F_CLEANUP 0x1
int (*cc_newsession) (u_int32_t *, struct cryptoini *);
int (*cc_process) (struct cryptop *);
int (*cc_freesession) (u_int32_t);
};
#ifdef _KERNEL
extern int crypto_newsession(u_int64_t *, struct cryptoini *);
extern int crypto_freesession(u_int64_t);
extern int crypto_dispatch(struct cryptop *);
extern int crypto_register(u_int32_t, int, void *, void *, void *);
extern int crypto_unregister(u_int32_t, int);
extern int32_t crypto_get_driverid(void);
extern struct cryptop *crypto_getreq(int);
extern void crypto_freereq(struct cryptop *);
#endif /* _KERNEL */
#endif /* _CRYPTO_CRYPTO_H_ */
|
