move library packages to package/libs/
[openwrt/svn-archive/archive.git] / package / libs / ocf-crypto-headers / src / cryptodev.h
1 /* $FreeBSD: src/sys/opencrypto/cryptodev.h,v 1.25 2007/05/09 19:37:02 gnn Exp $ */
2 /* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */
3
4 /*-
5 * Linux port done by David McCullough <david_mccullough@mcafee.com>
6 * Copyright (C) 2006-2010 David McCullough
7 * Copyright (C) 2004-2005 Intel Corporation.
8 * The license and original author are listed below.
9 *
10 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
11 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
12 *
13 * This code was written by Angelos D. Keromytis in Athens, Greece, in
14 * February 2000. Network Security Technologies Inc. (NSTI) kindly
15 * supported the development of this code.
16 *
17 * Copyright (c) 2000 Angelos D. Keromytis
18 *
19 * Permission to use, copy, and modify this software with or without fee
20 * is hereby granted, provided that this entire notice is included in
21 * all source code copies of any software which is or includes a copy or
22 * modification of this software.
23 *
24 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
25 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
26 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
27 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
28 * PURPOSE.
29 *
30 * Copyright (c) 2001 Theo de Raadt
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 *
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. The name of the author may not be used to endorse or promote products
42 * derived from this software without specific prior written permission.
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
53 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 *
55 * Effort sponsored in part by the Defense Advanced Research Projects
56 * Agency (DARPA) and Air Force Research Laboratory, Air Force
57 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
58 *
59 */
60
61 #ifndef _CRYPTO_CRYPTO_H_
62 #define _CRYPTO_CRYPTO_H_
63
64 /* Some initial values */
65 #define CRYPTO_DRIVERS_INITIAL 4
66 #define CRYPTO_SW_SESSIONS 32
67
68 /* Hash values */
69 #define NULL_HASH_LEN 0
70 #define MD5_HASH_LEN 16
71 #define SHA1_HASH_LEN 20
72 #define RIPEMD160_HASH_LEN 20
73 #define SHA2_256_HASH_LEN 32
74 #define SHA2_384_HASH_LEN 48
75 #define SHA2_512_HASH_LEN 64
76 #define MD5_KPDK_HASH_LEN 16
77 #define SHA1_KPDK_HASH_LEN 20
78 /* Maximum hash algorithm result length */
79 #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */
80
81 /* HMAC values */
82 #define NULL_HMAC_BLOCK_LEN 1
83 #define MD5_HMAC_BLOCK_LEN 64
84 #define SHA1_HMAC_BLOCK_LEN 64
85 #define RIPEMD160_HMAC_BLOCK_LEN 64
86 #define SHA2_256_HMAC_BLOCK_LEN 64
87 #define SHA2_384_HMAC_BLOCK_LEN 128
88 #define SHA2_512_HMAC_BLOCK_LEN 128
89 /* Maximum HMAC block length */
90 #define HMAC_MAX_BLOCK_LEN SHA2_512_HMAC_BLOCK_LEN /* Keep this updated */
91 #define HMAC_IPAD_VAL 0x36
92 #define HMAC_OPAD_VAL 0x5C
93
94 /* Encryption algorithm block sizes */
95 #define NULL_BLOCK_LEN 1
96 #define DES_BLOCK_LEN 8
97 #define DES3_BLOCK_LEN 8
98 #define BLOWFISH_BLOCK_LEN 8
99 #define SKIPJACK_BLOCK_LEN 8
100 #define CAST128_BLOCK_LEN 8
101 #define RIJNDAEL128_BLOCK_LEN 16
102 #define AES_BLOCK_LEN RIJNDAEL128_BLOCK_LEN
103 #define CAMELLIA_BLOCK_LEN 16
104 #define ARC4_BLOCK_LEN 1
105 #define EALG_MAX_BLOCK_LEN AES_BLOCK_LEN /* Keep this updated */
106
107 /* Encryption algorithm min and max key sizes */
108 #define NULL_MIN_KEY_LEN 0
109 #define NULL_MAX_KEY_LEN 0
110 #define DES_MIN_KEY_LEN 8
111 #define DES_MAX_KEY_LEN 8
112 #define DES3_MIN_KEY_LEN 24
113 #define DES3_MAX_KEY_LEN 24
114 #define BLOWFISH_MIN_KEY_LEN 4
115 #define BLOWFISH_MAX_KEY_LEN 56
116 #define SKIPJACK_MIN_KEY_LEN 10
117 #define SKIPJACK_MAX_KEY_LEN 10
118 #define CAST128_MIN_KEY_LEN 5
119 #define CAST128_MAX_KEY_LEN 16
120 #define RIJNDAEL128_MIN_KEY_LEN 16
121 #define RIJNDAEL128_MAX_KEY_LEN 32
122 #define AES_MIN_KEY_LEN RIJNDAEL128_MIN_KEY_LEN
123 #define AES_MAX_KEY_LEN RIJNDAEL128_MAX_KEY_LEN
124 #define CAMELLIA_MIN_KEY_LEN 16
125 #define CAMELLIA_MAX_KEY_LEN 32
126 #define ARC4_MIN_KEY_LEN 1
127 #define ARC4_MAX_KEY_LEN 256
128
129 /* Max size of data that can be processed */
130 #define CRYPTO_MAX_DATA_LEN 64*1024 - 1
131
132 #define CRYPTO_ALGORITHM_MIN 1
133 #define CRYPTO_DES_CBC 1
134 #define CRYPTO_3DES_CBC 2
135 #define CRYPTO_BLF_CBC 3
136 #define CRYPTO_CAST_CBC 4
137 #define CRYPTO_SKIPJACK_CBC 5
138 #define CRYPTO_MD5_HMAC 6
139 #define CRYPTO_SHA1_HMAC 7
140 #define CRYPTO_RIPEMD160_HMAC 8
141 #define CRYPTO_MD5_KPDK 9
142 #define CRYPTO_SHA1_KPDK 10
143 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */
144 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */
145 #define CRYPTO_ARC4 12
146 #define CRYPTO_MD5 13
147 #define CRYPTO_SHA1 14
148 #define CRYPTO_NULL_HMAC 15
149 #define CRYPTO_NULL_CBC 16
150 #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */
151 #define CRYPTO_SHA2_256_HMAC 18
152 #define CRYPTO_SHA2_384_HMAC 19
153 #define CRYPTO_SHA2_512_HMAC 20
154 #define CRYPTO_CAMELLIA_CBC 21
155 #define CRYPTO_SHA2_256 22
156 #define CRYPTO_SHA2_384 23
157 #define CRYPTO_SHA2_512 24
158 #define CRYPTO_RIPEMD160 25
159 #define CRYPTO_LZS_COMP 26
160 #define CRYPTO_ALGORITHM_MAX 26 /* Keep updated - see above */
161
162 /* Algorithm flags */
163 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
164 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */
165 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */
166
167 /*
168 * Crypto driver/device flags. They can set in the crid
169 * parameter when creating a session or submitting a key
170 * op to affect the device/driver assigned. If neither
171 * of these are specified then the crid is assumed to hold
172 * the driver id of an existing (and suitable) device that
173 * must be used to satisfy the request.
174 */
175 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */
176 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */
177
178 /* NB: deprecated */
179 struct session_op {
180 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
181 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
182
183 u_int32_t keylen; /* cipher key */
184 caddr_t key;
185 int mackeylen; /* mac key */
186 caddr_t mackey;
187
188 u_int32_t ses; /* returns: session # */
189 };
190
191 struct session2_op {
192 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
193 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
194
195 u_int32_t keylen; /* cipher key */
196 caddr_t key;
197 int mackeylen; /* mac key */
198 caddr_t mackey;
199
200 u_int32_t ses; /* returns: session # */
201 int crid; /* driver id + flags (rw) */
202 int pad[4]; /* for future expansion */
203 };
204
205 struct crypt_op {
206 u_int32_t ses;
207 u_int16_t op; /* i.e. COP_ENCRYPT */
208 #define COP_NONE 0
209 #define COP_ENCRYPT 1
210 #define COP_DECRYPT 2
211 u_int16_t flags;
212 #define COP_F_BATCH 0x0008 /* Batch op if possible */
213 u_int len;
214 caddr_t src, dst; /* become iov[] inside kernel */
215 caddr_t mac; /* must be big enough for chosen MAC */
216 caddr_t iv;
217 };
218
219 /*
220 * Parameters for looking up a crypto driver/device by
221 * device name or by id. The latter are returned for
222 * created sessions (crid) and completed key operations.
223 */
224 struct crypt_find_op {
225 int crid; /* driver id + flags */
226 char name[32]; /* device/driver name */
227 };
228
229 /* bignum parameter, in packed bytes, ... */
230 struct crparam {
231 caddr_t crp_p;
232 u_int crp_nbits;
233 };
234
235 #define CRK_MAXPARAM 8
236
237 struct crypt_kop {
238 u_int crk_op; /* ie. CRK_MOD_EXP or other */
239 u_int crk_status; /* return status */
240 u_short crk_iparams; /* # of input parameters */
241 u_short crk_oparams; /* # of output parameters */
242 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */
243 struct crparam crk_param[CRK_MAXPARAM];
244 };
245 #define CRK_ALGORITM_MIN 0
246 #define CRK_MOD_EXP 0
247 #define CRK_MOD_EXP_CRT 1
248 #define CRK_DSA_SIGN 2
249 #define CRK_DSA_VERIFY 3
250 #define CRK_DH_COMPUTE_KEY 4
251 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */
252
253 #define CRF_MOD_EXP (1 << CRK_MOD_EXP)
254 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT)
255 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN)
256 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY)
257 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY)
258
259 /*
260 * done against open of /dev/crypto, to get a cloned descriptor.
261 * Please use F_SETFD against the cloned descriptor.
262 */
263 #define CRIOGET _IOWR('c', 100, u_int32_t)
264 #define CRIOASYMFEAT CIOCASYMFEAT
265 #define CRIOFINDDEV CIOCFINDDEV
266
267 /* the following are done against the cloned descriptor */
268 #define CIOCGSESSION _IOWR('c', 101, struct session_op)
269 #define CIOCFSESSION _IOW('c', 102, u_int32_t)
270 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
271 #define CIOCKEY _IOWR('c', 104, struct crypt_kop)
272 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t)
273 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op)
274 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop)
275 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op)
276
277 struct cryptotstat {
278 struct timespec acc; /* total accumulated time */
279 struct timespec min; /* min time */
280 struct timespec max; /* max time */
281 u_int32_t count; /* number of observations */
282 };
283
284 struct cryptostats {
285 u_int32_t cs_ops; /* symmetric crypto ops submitted */
286 u_int32_t cs_errs; /* symmetric crypto ops that failed */
287 u_int32_t cs_kops; /* asymetric/key ops submitted */
288 u_int32_t cs_kerrs; /* asymetric/key ops that failed */
289 u_int32_t cs_intrs; /* crypto swi thread activations */
290 u_int32_t cs_rets; /* crypto return thread activations */
291 u_int32_t cs_blocks; /* symmetric op driver block */
292 u_int32_t cs_kblocks; /* symmetric op driver block */
293 /*
294 * When CRYPTO_TIMING is defined at compile time and the
295 * sysctl debug.crypto is set to 1, the crypto system will
296 * accumulate statistics about how long it takes to process
297 * crypto requests at various points during processing.
298 */
299 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */
300 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */
301 struct cryptotstat cs_cb; /* crypto_done -> callback */
302 struct cryptotstat cs_finis; /* callback -> callback return */
303
304 u_int32_t cs_drops; /* crypto ops dropped due to congestion */
305 };
306
307 #ifdef __KERNEL__
308
309 /* Standard initialization structure beginning */
310 struct cryptoini {
311 int cri_alg; /* Algorithm to use */
312 int cri_klen; /* Key length, in bits */
313 int cri_mlen; /* Number of bytes we want from the
314 entire hash. 0 means all. */
315 caddr_t cri_key; /* key to use */
316 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */
317 struct cryptoini *cri_next;
318 };
319
320 /* Describe boundaries of a single crypto operation */
321 struct cryptodesc {
322 int crd_skip; /* How many bytes to ignore from start */
323 int crd_len; /* How many bytes to process */
324 int crd_inject; /* Where to inject results, if applicable */
325 int crd_flags;
326
327 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */
328 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in
329 place, so don't copy. */
330 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */
331 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */
332 #define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */
333 #define CRD_F_COMP 0x0f /* Set when doing compression */
334
335 struct cryptoini CRD_INI; /* Initialization/context data */
336 #define crd_iv CRD_INI.cri_iv
337 #define crd_key CRD_INI.cri_key
338 #define crd_alg CRD_INI.cri_alg
339 #define crd_klen CRD_INI.cri_klen
340 #define crd_mlen CRD_INI.cri_mlen
341
342 struct cryptodesc *crd_next;
343 };
344
345 /* Structure describing complete operation */
346 struct cryptop {
347 struct list_head crp_next;
348 wait_queue_head_t crp_waitq;
349
350 u_int64_t crp_sid; /* Session ID */
351 int crp_ilen; /* Input data total length */
352 int crp_olen; /* Result total length */
353
354 int crp_etype; /*
355 * Error type (zero means no error).
356 * All error codes except EAGAIN
357 * indicate possible data corruption (as in,
358 * the data have been touched). On all
359 * errors, the crp_sid may have changed
360 * (reset to a new one), so the caller
361 * should always check and use the new
362 * value on future requests.
363 */
364 int crp_flags;
365
366 #define CRYPTO_F_SKBUF 0x0001 /* Input/output are skbuf chains */
367 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */
368 #define CRYPTO_F_REL 0x0004 /* Must return data in same place */
369 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */
370 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */
371 #define CRYPTO_F_DONE 0x0020 /* Operation completed */
372 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */
373
374 caddr_t crp_buf; /* Data to be processed */
375 caddr_t crp_opaque; /* Opaque pointer, passed along */
376 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */
377
378 int (*crp_callback)(struct cryptop *); /* Callback function */
379 };
380
381 #define CRYPTO_BUF_CONTIG 0x0
382 #define CRYPTO_BUF_IOV 0x1
383 #define CRYPTO_BUF_SKBUF 0x2
384
385 #define CRYPTO_OP_DECRYPT 0x0
386 #define CRYPTO_OP_ENCRYPT 0x1
387
388 /*
389 * Hints passed to process methods.
390 */
391 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */
392
393 struct cryptkop {
394 struct list_head krp_next;
395 wait_queue_head_t krp_waitq;
396
397 int krp_flags;
398 #define CRYPTO_KF_DONE 0x0001 /* Operation completed */
399 #define CRYPTO_KF_CBIMM 0x0002 /* Do callback immediately */
400
401 u_int krp_op; /* ie. CRK_MOD_EXP or other */
402 u_int krp_status; /* return status */
403 u_short krp_iparams; /* # of input parameters */
404 u_short krp_oparams; /* # of output parameters */
405 u_int krp_crid; /* desired device, etc. */
406 u_int32_t krp_hid;
407 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
408 int (*krp_callback)(struct cryptkop *);
409 };
410
411 #include <ocf-compat.h>
412
413 /*
414 * Session ids are 64 bits. The lower 32 bits contain a "local id" which
415 * is a driver-private session identifier. The upper 32 bits contain a
416 * "hardware id" used by the core crypto code to identify the driver and
417 * a copy of the driver's capabilities that can be used by client code to
418 * optimize operation.
419 */
420 #define CRYPTO_SESID2HID(_sid) (((_sid) >> 32) & 0x00ffffff)
421 #define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 32) & 0xff000000)
422 #define CRYPTO_SESID2LID(_sid) (((u_int32_t) (_sid)) & 0xffffffff)
423
424 extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard);
425 extern int crypto_freesession(u_int64_t sid);
426 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE
427 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE
428 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */
429 extern int32_t crypto_get_driverid(device_t dev, int flags);
430 extern int crypto_find_driver(const char *);
431 extern device_t crypto_find_device_byhid(int hid);
432 extern int crypto_getcaps(int hid);
433 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen,
434 u_int32_t flags);
435 extern int crypto_kregister(u_int32_t, int, u_int32_t);
436 extern int crypto_unregister(u_int32_t driverid, int alg);
437 extern int crypto_unregister_all(u_int32_t driverid);
438 extern int crypto_dispatch(struct cryptop *crp);
439 extern int crypto_kdispatch(struct cryptkop *);
440 #define CRYPTO_SYMQ 0x1
441 #define CRYPTO_ASYMQ 0x2
442 extern int crypto_unblock(u_int32_t, int);
443 extern void crypto_done(struct cryptop *crp);
444 extern void crypto_kdone(struct cryptkop *);
445 extern int crypto_getfeat(int *);
446
447 extern void crypto_freereq(struct cryptop *crp);
448 extern struct cryptop *crypto_getreq(int num);
449
450 extern int crypto_usercrypto; /* userland may do crypto requests */
451 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */
452 extern int crypto_devallowsoft; /* only use hardware crypto */
453
454 /*
455 * random number support, crypto_unregister_all will unregister
456 */
457 extern int crypto_rregister(u_int32_t driverid,
458 int (*read_random)(void *arg, u_int32_t *buf, int len), void *arg);
459 extern int crypto_runregister_all(u_int32_t driverid);
460
461 /*
462 * Crypto-related utility routines used mainly by drivers.
463 *
464 * XXX these don't really belong here; but for now they're
465 * kept apart from the rest of the system.
466 */
467 struct uio;
468 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp);
469 extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp);
470 extern struct iovec *cuio_getptr(struct uio *uio, int loc, int *off);
471
472 extern void crypto_copyback(int flags, caddr_t buf, int off, int size,
473 caddr_t in);
474 extern void crypto_copydata(int flags, caddr_t buf, int off, int size,
475 caddr_t out);
476 extern int crypto_apply(int flags, caddr_t buf, int off, int len,
477 int (*f)(void *, void *, u_int), void *arg);
478
479 #endif /* __KERNEL__ */
480 #endif /* _CRYPTO_CRYPTO_H_ */