2 /* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */
5 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
7 * This code was written by Angelos D. Keromytis in Athens, Greece, in
8 * February 2000. Network Security Technologies Inc. (NSTI) kindly
9 * supported the development of this code.
11 * Copyright (c) 2000 Angelos D. Keromytis
13 * Permission to use, copy, and modify this software with or without fee
14 * is hereby granted, provided that this entire notice is included in
15 * all source code copies of any software which is or includes a copy or
16 * modification of this software.
18 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
19 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
20 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
21 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
24 * Copyright (c) 2001 Theo de Raadt
26 * Redistribution and use in source and binary forms, with or without
27 * modification, are permitted provided that the following conditions
30 * 1. Redistributions of source code must retain the above copyright
31 * notice, this list of conditions and the following disclaimer.
32 * 2. Redistributions in binary form must reproduce the above copyright
33 * notice, this list of conditions and the following disclaimer in the
34 * documentation and/or other materials provided with the distribution.
35 * 3. The name of the author may not be used to endorse or promote products
36 * derived from this software without specific prior written permission.
38 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
41 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
42 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
44 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
45 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
47 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49 * Effort sponsored in part by the Defense Advanced Research Projects
50 * Agency (DARPA) and Air Force Research Laboratory, Air Force
51 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
55 #ifndef _CRYPTO_CRYPTO_H_
56 #define _CRYPTO_CRYPTO_H_
58 #include <sys/ioccom.h>
60 /* Some initial values */
61 #define CRYPTO_DRIVERS_INITIAL 4
62 #define CRYPTO_SW_SESSIONS 32
65 #define HMAC_BLOCK_LEN 64
66 #define HMAC_IPAD_VAL 0x36
67 #define HMAC_OPAD_VAL 0x5C
69 /* Encryption algorithm block sizes */
70 #define DES_BLOCK_LEN 8
71 #define DES3_BLOCK_LEN 8
72 #define BLOWFISH_BLOCK_LEN 8
73 #define SKIPJACK_BLOCK_LEN 8
74 #define CAST128_BLOCK_LEN 8
75 #define RIJNDAEL128_BLOCK_LEN 16
76 #define EALG_MAX_BLOCK_LEN 16 /* Keep this updated */
78 /* Maximum hash algorithm result length */
79 #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */
81 #define CRYPTO_ALGORITHM_MIN 1
82 #define CRYPTO_DES_CBC 1
83 #define CRYPTO_3DES_CBC 2
84 #define CRYPTO_BLF_CBC 3
85 #define CRYPTO_CAST_CBC 4
86 #define CRYPTO_SKIPJACK_CBC 5
87 #define CRYPTO_MD5_HMAC 6
88 #define CRYPTO_SHA1_HMAC 7
89 #define CRYPTO_RIPEMD160_HMAC 8
90 #define CRYPTO_MD5_KPDK 9
91 #define CRYPTO_SHA1_KPDK 10
92 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */
93 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */
94 #define CRYPTO_ARC4 12
96 #define CRYPTO_SHA1 14
97 #define CRYPTO_SHA2_HMAC 15
98 #define CRYPTO_NULL_HMAC 16
99 #define CRYPTO_NULL_CBC 17
100 #define CRYPTO_DEFLATE_COMP 18 /* Deflate compression algorithm */
101 #define CRYPTO_ALGORITHM_MAX 18 /* Keep updated - see below */
103 /* Algorithm flags */
104 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
105 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */
106 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */
109 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
110 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
112 u_int32_t keylen; /* cipher key */
114 int mackeylen; /* mac key */
117 u_int32_t ses; /* returns: session # */
122 u_int16_t op; /* i.e. COP_ENCRYPT */
123 #define COP_ENCRYPT 1
124 #define COP_DECRYPT 2
125 u_int16_t flags; /* always 0 */
127 caddr_t src, dst; /* become iov[] inside kernel */
128 caddr_t mac; /* must be big enough for chosen MAC */
132 #define CRYPTO_MAX_MAC_LEN 20
134 /* bignum parameter, in packed bytes, ... */
140 #define CRK_MAXPARAM 8
143 u_int crk_op; /* ie. CRK_MOD_EXP or other */
144 u_int crk_status; /* return status */
145 u_short crk_iparams; /* # of input parameters */
146 u_short crk_oparams; /* # of output parameters */
148 struct crparam crk_param[CRK_MAXPARAM];
150 #define CRK_ALGORITM_MIN 0
151 #define CRK_MOD_EXP 0
152 #define CRK_MOD_EXP_CRT 1
153 #define CRK_DSA_SIGN 2
154 #define CRK_DSA_VERIFY 3
155 #define CRK_DH_COMPUTE_KEY 4
156 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */
158 #define CRF_MOD_EXP (1 << CRK_MOD_EXP)
159 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT)
160 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN)
161 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY)
162 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY)
165 * done against open of /dev/crypto, to get a cloned descriptor.
166 * Please use F_SETFD against the cloned descriptor.
168 #define CRIOGET _IOWR('c', 100, u_int32_t)
170 /* the following are done against the cloned descriptor */
171 #define CIOCGSESSION _IOWR('c', 101, struct session_op)
172 #define CIOCFSESSION _IOW('c', 102, u_int32_t)
173 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
174 #define CIOCKEY _IOWR('c', 104, struct crypt_kop)
176 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t)
179 /* Standard initialization structure beginning */
181 int cri_alg; /* Algorithm to use */
182 int cri_klen; /* Key length, in bits */
183 int cri_rnd; /* Algorithm rounds, where relevant */
184 caddr_t cri_key; /* key to use */
185 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */
186 struct cryptoini *cri_next;
189 /* Describe boundaries of a single crypto operation */
191 int crd_skip; /* How many bytes to ignore from start */
192 int crd_len; /* How many bytes to process */
193 int crd_inject; /* Where to inject results, if applicable */
196 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */
197 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in
198 place, so don't copy. */
199 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */
200 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */
201 #define CRD_F_COMP 0x0f /* Set when doing compression */
203 struct cryptoini CRD_INI; /* Initialization/context data */
204 #define crd_iv CRD_INI.cri_iv
205 #define crd_key CRD_INI.cri_key
206 #define crd_rnd CRD_INI.cri_rnd
207 #define crd_alg CRD_INI.cri_alg
208 #define crd_klen CRD_INI.cri_klen
210 struct cryptodesc *crd_next;
213 /* Structure describing complete operation */
215 TAILQ_ENTRY(cryptop) crp_next;
217 u_int64_t crp_sid; /* Session ID */
218 int crp_ilen; /* Input data total length */
219 int crp_olen; /* Result total length */
220 int crp_alloctype; /* Type of buf to allocate if needed */
223 * Error type (zero means no error).
224 * All error codes except EAGAIN
225 * indicate possible data corruption (as in,
226 * the data have been touched). On all
227 * errors, the crp_sid may have changed
228 * (reset to a new one), so the caller
229 * should always check and use the new
230 * value on future requests.
234 #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains, otherwise contig */
235 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */
236 #define CRYPTO_F_REL 0x0004 /* Must return data in same place */
237 #define CRYPTO_F_NODELAY 0x0008 /* Dispatch as quickly as possible */
239 caddr_t crp_buf; /* Data to be processed */
240 caddr_t crp_opaque; /* Opaque pointer, passed along */
241 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */
243 int (*crp_callback)(struct cryptop *); /* Callback function */
248 #define CRYPTO_BUF_CONTIG 0x0
249 #define CRYPTO_BUF_IOV 0x1
250 #define CRYPTO_BUF_MBUF 0x2
252 #define CRYPTO_OP_DECRYPT 0x0
253 #define CRYPTO_OP_ENCRYPT 0x1
256 * Hints passed to process methods.
258 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */
261 TAILQ_ENTRY(cryptkop) krp_next;
263 u_int krp_op; /* ie. CRK_MOD_EXP or other */
264 u_int krp_status; /* return status */
265 u_short krp_iparams; /* # of input parameters */
266 u_short krp_oparams; /* # of output parameters */
268 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
269 int (*krp_callback)(struct cryptkop *);
272 /* Crypto capabilities structure */
274 u_int32_t cc_sessions;
277 * Largest possible operator length (in bits) for each type of
278 * encryption algorithm.
280 u_int16_t cc_max_op_len[CRYPTO_ALGORITHM_MAX + 1];
282 u_int8_t cc_alg[CRYPTO_ALGORITHM_MAX + 1];
284 u_int8_t cc_kalg[CRK_ALGORITHM_MAX + 1];
287 u_int8_t cc_qblocked; /* symmetric q blocked */
288 u_int8_t cc_kqblocked; /* asymmetric q blocked */
289 #define CRYPTOCAP_F_CLEANUP 0x1
290 #define CRYPTOCAP_F_SOFTWARE 0x02
292 void *cc_arg; /* callback argument */
293 int (*cc_newsession)(void*, u_int32_t*, struct cryptoini*);
294 int (*cc_process)(void*, struct cryptop *, int);
295 int (*cc_freesession)(void*, u_int64_t);
296 void *cc_karg; /* callback argument */
297 int (*cc_kprocess) (void*, struct cryptkop *, int);
300 MALLOC_DECLARE(M_CRYPTO_DATA);
302 extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard);
303 extern int crypto_freesession(u_int64_t sid);
304 extern int32_t crypto_get_driverid(u_int32_t flags);
305 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen,
307 int (*newses)(void*, u_int32_t*, struct cryptoini*),
308 int (*freeses)(void*, u_int64_t),
309 int (*process)(void*, struct cryptop *, int),
311 extern int crypto_kregister(u_int32_t, int, u_int32_t,
312 int (*)(void*, struct cryptkop *, int),
314 extern int crypto_unregister(u_int32_t driverid, int alg);
315 extern int crypto_unregister_all(u_int32_t driverid);
316 extern int crypto_dispatch(struct cryptop *crp);
317 extern int crypto_kdispatch(struct cryptkop *);
318 #define CRYPTO_SYMQ 0x1
319 #define CRYPTO_ASYMQ 0x2
320 extern int crypto_unblock(u_int32_t, int);
321 extern void crypto_done(struct cryptop *crp);
322 extern void crypto_kdone(struct cryptkop *);
323 extern int crypto_getfeat(int *);
325 extern void crypto_freereq(struct cryptop *crp);
326 extern struct cryptop *crypto_getreq(int num);
328 extern int crypto_usercrypto; /* userland may do crypto requests */
329 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */
330 extern int crypto_devallowsoft; /* only use hardware crypto */
333 * Crypto-related utility routines used mainly by drivers.
335 * XXX these don't really belong here; but for now they're
336 * kept apart from the rest of the system.
339 struct mbuf *m_getptr(struct mbuf *, int, int *);
342 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp);
343 extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp);
344 extern struct iovec *cuio_getptr(struct uio *uio, int loc, int *off);
346 #endif /* _CRYPTO_CRYPTO_H_ */