1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/zfs_context.h>
27 #include <sys/crypto/common.h>
28 #include <sys/crypto/impl.h>
29 #include <sys/crypto/api.h>
30 #include <sys/crypto/spi.h>
31 #include <sys/crypto/sched_impl.h>
32
33 /*
34 * Message authentication codes routines.
35 */
36
37 /*
38 * The following are the possible returned values common to all the routines
39 * below. The applicability of some of these return values depends on the
40 * presence of the arguments.
41 *
42 * CRYPTO_SUCCESS: The operation completed successfully.
43 * CRYPTO_QUEUED: A request was submitted successfully. The callback
44 * routine will be called when the operation is done.
45 * CRYPTO_INVALID_MECH_NUMBER, CRYPTO_INVALID_MECH_PARAM, or
46 * CRYPTO_INVALID_MECH for problems with the 'mech'.
47 * CRYPTO_INVALID_DATA for bogus 'data'
48 * CRYPTO_HOST_MEMORY for failure to allocate memory to handle this work.
49 * CRYPTO_INVALID_CONTEXT: Not a valid context.
50 * CRYPTO_BUSY: Cannot process the request now. Schedule a
51 * crypto_bufcall(), or try later.
52 * CRYPTO_NOT_SUPPORTED and CRYPTO_MECH_NOT_SUPPORTED: No provider is
53 * capable of a function or a mechanism.
54 * CRYPTO_INVALID_KEY: bogus 'key' argument.
55 * CRYPTO_INVALID_MAC: bogus 'mac' argument.
56 */
57
58 /*
59 * crypto_mac_prov()
60 *
61 * Arguments:
62 * mech: crypto_mechanism_t pointer.
63 * mech_type is a valid value previously returned by
64 * crypto_mech2id();
65 * When the mech's parameter is not NULL, its definition depends
66 * on the standard definition of the mechanism.
67 * key: pointer to a crypto_key_t structure.
68 * data: The message to compute the MAC for.
69 * mac: Storage for the MAC. The length needed depends on the mechanism.
70 * tmpl: a crypto_ctx_template_t, opaque template of a context of a
71 * MAC with the 'mech' using 'key'. 'tmpl' is created by
72 * a previous call to crypto_create_ctx_template().
73 * cr: crypto_call_req_t calling conditions and call back info.
74 *
75 * Description:
76 * Asynchronously submits a request for, or synchronously performs a
77 * single-part message authentication of 'data' with the mechanism
78 * 'mech', using * the key 'key', on the specified provider with
79 * the specified session id.
80 * When complete and successful, 'mac' will contain the message
81 * authentication code.
82 *
83 * Context:
84 * Process or interrupt, according to the semantics dictated by the 'crq'.
85 *
86 * Returns:
87 * See comment in the beginning of the file.
88 */
89 int
crypto_mac_prov(crypto_provider_t provider,crypto_session_id_t sid,crypto_mechanism_t * mech,crypto_data_t * data,crypto_key_t * key,crypto_ctx_template_t tmpl,crypto_data_t * mac,crypto_call_req_t * crq)90 crypto_mac_prov(crypto_provider_t provider, crypto_session_id_t sid,
91 crypto_mechanism_t *mech, crypto_data_t *data, crypto_key_t *key,
92 crypto_ctx_template_t tmpl, crypto_data_t *mac, crypto_call_req_t *crq)
93 {
94 kcf_req_params_t params;
95 kcf_provider_desc_t *pd = provider;
96 kcf_provider_desc_t *real_provider = pd;
97 int rv;
98
99 ASSERT(KCF_PROV_REFHELD(pd));
100
101 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
102 rv = kcf_get_hardware_provider(mech->cm_type,
103 CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
104 &real_provider, CRYPTO_FG_MAC_ATOMIC);
105
106 if (rv != CRYPTO_SUCCESS)
107 return (rv);
108 }
109
110 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, sid, mech, key,
111 data, mac, tmpl);
112 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE);
113 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
114 KCF_PROV_REFRELE(real_provider);
115
116 return (rv);
117 }
118
119 /*
120 * Same as crypto_mac_prov(), but relies on the KCF scheduler to choose
121 * a provider. See crypto_mac() comments for more information.
122 */
123 int
crypto_mac(crypto_mechanism_t * mech,crypto_data_t * data,crypto_key_t * key,crypto_ctx_template_t tmpl,crypto_data_t * mac,crypto_call_req_t * crq)124 crypto_mac(crypto_mechanism_t *mech, crypto_data_t *data,
125 crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *mac,
126 crypto_call_req_t *crq)
127 {
128 int error;
129 kcf_mech_entry_t *me;
130 kcf_req_params_t params;
131 kcf_provider_desc_t *pd;
132 kcf_ctx_template_t *ctx_tmpl;
133 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL;
134 kcf_prov_tried_t *list = NULL;
135
136 retry:
137 /* The pd is returned held */
138 if ((pd = kcf_get_mech_provider(mech->cm_type, &me, &error,
139 list, CRYPTO_FG_MAC_ATOMIC, CHECK_RESTRICT(crq),
140 data->cd_length)) == NULL) {
141 if (list != NULL)
142 kcf_free_triedlist(list);
143 return (error);
144 }
145
146 /*
147 * For SW providers, check the validity of the context template
148 * It is very rare that the generation number mis-matches, so
149 * is acceptable to fail here, and let the consumer recover by
150 * freeing this tmpl and create a new one for the key and new SW
151 * provider
152 */
153 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) &&
154 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) {
155 if (ctx_tmpl->ct_generation != me->me_gen_swprov) {
156 if (list != NULL)
157 kcf_free_triedlist(list);
158 KCF_PROV_REFRELE(pd);
159 return (CRYPTO_OLD_CTX_TEMPLATE);
160 } else {
161 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl;
162 }
163 }
164
165 /* The fast path for SW providers. */
166 if (CHECK_FASTPATH(crq, pd)) {
167 crypto_mechanism_t lmech;
168
169 lmech = *mech;
170 KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech);
171
172 error = KCF_PROV_MAC_ATOMIC(pd, pd->pd_sid, &lmech, key, data,
173 mac, spi_ctx_tmpl, KCF_SWFP_RHNDL(crq));
174 KCF_PROV_INCRSTATS(pd, error);
175 } else {
176 if (pd->pd_prov_type == CRYPTO_HW_PROVIDER &&
177 (pd->pd_flags & CRYPTO_HASH_NO_UPDATE) &&
178 (data->cd_length > pd->pd_hash_limit)) {
179 /*
180 * XXX - We need a check to see if this is indeed
181 * a HMAC. So far, all kernel clients use
182 * this interface only for HMAC. So, this is fine
183 * for now.
184 */
185 error = CRYPTO_BUFFER_TOO_BIG;
186 } else {
187 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_ATOMIC,
188 pd->pd_sid, mech, key, data, mac, spi_ctx_tmpl);
189
190 error = kcf_submit_request(pd, NULL, crq, ¶ms,
191 KCF_ISDUALREQ(crq));
192 }
193 }
194
195 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
196 IS_RECOVERABLE(error)) {
197 /* Add pd to the linked list of providers tried. */
198 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
199 goto retry;
200 }
201
202 if (list != NULL)
203 kcf_free_triedlist(list);
204
205 KCF_PROV_REFRELE(pd);
206 return (error);
207 }
208
209 /*
210 * Single part operation to compute the MAC corresponding to the specified
211 * 'data' and to verify that it matches the MAC specified by 'mac'.
212 * The other arguments are the same as the function crypto_mac_prov().
213 */
214 int
crypto_mac_verify_prov(crypto_provider_t provider,crypto_session_id_t sid,crypto_mechanism_t * mech,crypto_data_t * data,crypto_key_t * key,crypto_ctx_template_t tmpl,crypto_data_t * mac,crypto_call_req_t * crq)215 crypto_mac_verify_prov(crypto_provider_t provider, crypto_session_id_t sid,
216 crypto_mechanism_t *mech, crypto_data_t *data, crypto_key_t *key,
217 crypto_ctx_template_t tmpl, crypto_data_t *mac, crypto_call_req_t *crq)
218 {
219 kcf_req_params_t params;
220 kcf_provider_desc_t *pd = provider;
221 kcf_provider_desc_t *real_provider = pd;
222 int rv;
223
224 ASSERT(KCF_PROV_REFHELD(pd));
225
226 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
227 rv = kcf_get_hardware_provider(mech->cm_type,
228 CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
229 &real_provider, CRYPTO_FG_MAC_ATOMIC);
230
231 if (rv != CRYPTO_SUCCESS)
232 return (rv);
233 }
234
235 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_MAC_VERIFY_ATOMIC, sid, mech,
236 key, data, mac, tmpl);
237 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE);
238 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
239 KCF_PROV_REFRELE(real_provider);
240
241 return (rv);
242 }
243
244 /*
245 * Same as crypto_mac_verify_prov(), but relies on the KCF scheduler to choose
246 * a provider. See crypto_mac_verify_prov() comments for more information.
247 */
248 int
crypto_mac_verify(crypto_mechanism_t * mech,crypto_data_t * data,crypto_key_t * key,crypto_ctx_template_t tmpl,crypto_data_t * mac,crypto_call_req_t * crq)249 crypto_mac_verify(crypto_mechanism_t *mech, crypto_data_t *data,
250 crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *mac,
251 crypto_call_req_t *crq)
252 {
253 int error;
254 kcf_mech_entry_t *me;
255 kcf_req_params_t params;
256 kcf_provider_desc_t *pd;
257 kcf_ctx_template_t *ctx_tmpl;
258 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL;
259 kcf_prov_tried_t *list = NULL;
260
261 retry:
262 /* The pd is returned held */
263 if ((pd = kcf_get_mech_provider(mech->cm_type, &me, &error,
264 list, CRYPTO_FG_MAC_ATOMIC, CHECK_RESTRICT(crq),
265 data->cd_length)) == NULL) {
266 if (list != NULL)
267 kcf_free_triedlist(list);
268 return (error);
269 }
270
271 /*
272 * For SW providers, check the validity of the context template
273 * It is very rare that the generation number mis-matches, so
274 * is acceptable to fail here, and let the consumer recover by
275 * freeing this tmpl and create a new one for the key and new SW
276 * provider
277 */
278 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) &&
279 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) {
280 if (ctx_tmpl->ct_generation != me->me_gen_swprov) {
281 if (list != NULL)
282 kcf_free_triedlist(list);
283 KCF_PROV_REFRELE(pd);
284 return (CRYPTO_OLD_CTX_TEMPLATE);
285 } else {
286 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl;
287 }
288 }
289
290 /* The fast path for SW providers. */
291 if (CHECK_FASTPATH(crq, pd)) {
292 crypto_mechanism_t lmech;
293
294 lmech = *mech;
295 KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech);
296
297 error = KCF_PROV_MAC_VERIFY_ATOMIC(pd, pd->pd_sid, &lmech, key,
298 data, mac, spi_ctx_tmpl, KCF_SWFP_RHNDL(crq));
299 KCF_PROV_INCRSTATS(pd, error);
300 } else {
301 if (pd->pd_prov_type == CRYPTO_HW_PROVIDER &&
302 (pd->pd_flags & CRYPTO_HASH_NO_UPDATE) &&
303 (data->cd_length > pd->pd_hash_limit)) {
304 /* see comments in crypto_mac() */
305 error = CRYPTO_BUFFER_TOO_BIG;
306 } else {
307 KCF_WRAP_MAC_OPS_PARAMS(¶ms,
308 KCF_OP_MAC_VERIFY_ATOMIC, pd->pd_sid, mech,
309 key, data, mac, spi_ctx_tmpl);
310
311 error = kcf_submit_request(pd, NULL, crq, ¶ms,
312 KCF_ISDUALREQ(crq));
313 }
314 }
315
316 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
317 IS_RECOVERABLE(error)) {
318 /* Add pd to the linked list of providers tried. */
319 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
320 goto retry;
321 }
322
323 if (list != NULL)
324 kcf_free_triedlist(list);
325
326 KCF_PROV_REFRELE(pd);
327 return (error);
328 }
329
330 /*
331 * crypto_mac_init_prov()
332 *
333 * Arguments:
334 * pd: pointer to the descriptor of the provider to use for this
335 * operation.
336 * sid: provider session id.
337 * mech: crypto_mechanism_t pointer.
338 * mech_type is a valid value previously returned by
339 * crypto_mech2id();
340 * When the mech's parameter is not NULL, its definition depends
341 * on the standard definition of the mechanism.
342 * key: pointer to a crypto_key_t structure.
343 * tmpl: a crypto_ctx_template_t, opaque template of a context of a
344 * MAC with the 'mech' using 'key'. 'tmpl' is created by
345 * a previous call to crypto_create_ctx_template().
346 * ctxp: Pointer to a crypto_context_t.
347 * cr: crypto_call_req_t calling conditions and call back info.
348 *
349 * Description:
350 * Asynchronously submits a request for, or synchronously performs the
351 * initialization of a MAC operation on the specified provider with
352 * the specified session.
353 * When possible and applicable, will internally use the pre-computed MAC
354 * context from the context template, tmpl.
355 * When complete and successful, 'ctxp' will contain a crypto_context_t
356 * valid for later calls to mac_update() and mac_final().
357 * The caller should hold a reference on the specified provider
358 * descriptor before calling this function.
359 *
360 * Context:
361 * Process or interrupt, according to the semantics dictated by the 'cr'.
362 *
363 * Returns:
364 * See comment in the beginning of the file.
365 */
366 int
crypto_mac_init_prov(crypto_provider_t provider,crypto_session_id_t sid,crypto_mechanism_t * mech,crypto_key_t * key,crypto_spi_ctx_template_t tmpl,crypto_context_t * ctxp,crypto_call_req_t * crq)367 crypto_mac_init_prov(crypto_provider_t provider, crypto_session_id_t sid,
368 crypto_mechanism_t *mech, crypto_key_t *key, crypto_spi_ctx_template_t tmpl,
369 crypto_context_t *ctxp, crypto_call_req_t *crq)
370 {
371 int rv;
372 crypto_ctx_t *ctx;
373 kcf_req_params_t params;
374 kcf_provider_desc_t *pd = provider;
375 kcf_provider_desc_t *real_provider = pd;
376
377 ASSERT(KCF_PROV_REFHELD(pd));
378
379 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
380 rv = kcf_get_hardware_provider(mech->cm_type,
381 CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
382 &real_provider, CRYPTO_FG_MAC);
383
384 if (rv != CRYPTO_SUCCESS)
385 return (rv);
386 }
387
388 /* Allocate and initialize the canonical context */
389 if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) {
390 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
391 KCF_PROV_REFRELE(real_provider);
392 return (CRYPTO_HOST_MEMORY);
393 }
394
395 /* The fast path for SW providers. */
396 if (CHECK_FASTPATH(crq, pd)) {
397 crypto_mechanism_t lmech;
398
399 lmech = *mech;
400 KCF_SET_PROVIDER_MECHNUM(mech->cm_type, real_provider, &lmech);
401 rv = KCF_PROV_MAC_INIT(real_provider, ctx, &lmech, key, tmpl,
402 KCF_SWFP_RHNDL(crq));
403 KCF_PROV_INCRSTATS(pd, rv);
404 } else {
405 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_INIT, sid, mech, key,
406 NULL, NULL, tmpl);
407 rv = kcf_submit_request(real_provider, ctx, crq, ¶ms,
408 B_FALSE);
409 }
410
411 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
412 KCF_PROV_REFRELE(real_provider);
413
414 if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED))
415 *ctxp = (crypto_context_t)ctx;
416 else {
417 /* Release the hold done in kcf_new_ctx(). */
418 KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private);
419 }
420
421 return (rv);
422 }
423
424 /*
425 * Same as crypto_mac_init_prov(), but relies on the KCF scheduler to
426 * choose a provider. See crypto_mac_init_prov() comments for more
427 * information.
428 */
429 int
crypto_mac_init(crypto_mechanism_t * mech,crypto_key_t * key,crypto_ctx_template_t tmpl,crypto_context_t * ctxp,crypto_call_req_t * crq)430 crypto_mac_init(crypto_mechanism_t *mech, crypto_key_t *key,
431 crypto_ctx_template_t tmpl, crypto_context_t *ctxp,
432 crypto_call_req_t *crq)
433 {
434 int error;
435 kcf_mech_entry_t *me;
436 kcf_provider_desc_t *pd;
437 kcf_ctx_template_t *ctx_tmpl;
438 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL;
439 kcf_prov_tried_t *list = NULL;
440
441 retry:
442 /* The pd is returned held */
443 if ((pd = kcf_get_mech_provider(mech->cm_type, &me, &error,
444 list, CRYPTO_FG_MAC, CHECK_RESTRICT(crq), 0)) == NULL) {
445 if (list != NULL)
446 kcf_free_triedlist(list);
447 return (error);
448 }
449
450 /*
451 * For SW providers, check the validity of the context template
452 * It is very rare that the generation number mis-matches, so
453 * is acceptable to fail here, and let the consumer recover by
454 * freeing this tmpl and create a new one for the key and new SW
455 * provider
456 */
457
458 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) &&
459 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) {
460 if (ctx_tmpl->ct_generation != me->me_gen_swprov) {
461 if (list != NULL)
462 kcf_free_triedlist(list);
463 KCF_PROV_REFRELE(pd);
464 return (CRYPTO_OLD_CTX_TEMPLATE);
465 } else {
466 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl;
467 }
468 }
469
470 if (pd->pd_prov_type == CRYPTO_HW_PROVIDER &&
471 (pd->pd_flags & CRYPTO_HASH_NO_UPDATE)) {
472 /*
473 * The hardware provider has limited HMAC support.
474 * So, we fallback early here to using a software provider.
475 *
476 * XXX - need to enhance to do the fallback later in
477 * crypto_mac_update() if the size of accumulated input data
478 * exceeds the maximum size digestable by hardware provider.
479 */
480 error = CRYPTO_BUFFER_TOO_BIG;
481 } else {
482 error = crypto_mac_init_prov(pd, pd->pd_sid, mech, key,
483 spi_ctx_tmpl, ctxp, crq);
484 }
485 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
486 IS_RECOVERABLE(error)) {
487 /* Add pd to the linked list of providers tried. */
488 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
489 goto retry;
490 }
491
492 if (list != NULL)
493 kcf_free_triedlist(list);
494
495 KCF_PROV_REFRELE(pd);
496 return (error);
497 }
498
499 /*
500 * crypto_mac_update()
501 *
502 * Arguments:
503 * context: A crypto_context_t initialized by mac_init().
504 * data: The message part to be MAC'ed
505 * cr: crypto_call_req_t calling conditions and call back info.
506 *
507 * Description:
508 * Asynchronously submits a request for, or synchronously performs a
509 * part of a MAC operation.
510 *
511 * Context:
512 * Process or interrupt, according to the semantics dictated by the 'cr'.
513 *
514 * Returns:
515 * See comment in the beginning of the file.
516 */
517 int
crypto_mac_update(crypto_context_t context,crypto_data_t * data,crypto_call_req_t * cr)518 crypto_mac_update(crypto_context_t context, crypto_data_t *data,
519 crypto_call_req_t *cr)
520 {
521 crypto_ctx_t *ctx = (crypto_ctx_t *)context;
522 kcf_context_t *kcf_ctx;
523 kcf_provider_desc_t *pd;
524 kcf_req_params_t params;
525 int rv;
526
527 if ((ctx == NULL) ||
528 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
529 ((pd = kcf_ctx->kc_prov_desc) == NULL)) {
530 return (CRYPTO_INVALID_CONTEXT);
531 }
532
533 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
534
535 /* The fast path for SW providers. */
536 if (CHECK_FASTPATH(cr, pd)) {
537 rv = KCF_PROV_MAC_UPDATE(pd, ctx, data, NULL);
538 KCF_PROV_INCRSTATS(pd, rv);
539 } else {
540 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_UPDATE,
541 ctx->cc_session, NULL, NULL, data, NULL, NULL);
542 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
543 }
544
545 return (rv);
546 }
547
548 /*
549 * crypto_mac_final()
550 *
551 * Arguments:
552 * context: A crypto_context_t initialized by mac_init().
553 * mac: Storage for the message authentication code.
554 * cr: crypto_call_req_t calling conditions and call back info.
555 *
556 * Description:
557 * Asynchronously submits a request for, or synchronously performs a
558 * part of a message authentication operation.
559 *
560 * Context:
561 * Process or interrupt, according to the semantics dictated by the 'cr'.
562 *
563 * Returns:
564 * See comment in the beginning of the file.
565 */
566 int
crypto_mac_final(crypto_context_t context,crypto_data_t * mac,crypto_call_req_t * cr)567 crypto_mac_final(crypto_context_t context, crypto_data_t *mac,
568 crypto_call_req_t *cr)
569 {
570 crypto_ctx_t *ctx = (crypto_ctx_t *)context;
571 kcf_context_t *kcf_ctx;
572 kcf_provider_desc_t *pd;
573 kcf_req_params_t params;
574 int rv;
575
576 if ((ctx == NULL) ||
577 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
578 ((pd = kcf_ctx->kc_prov_desc) == NULL)) {
579 return (CRYPTO_INVALID_CONTEXT);
580 }
581
582 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
583
584 /* The fast path for SW providers. */
585 if (CHECK_FASTPATH(cr, pd)) {
586 rv = KCF_PROV_MAC_FINAL(pd, ctx, mac, NULL);
587 KCF_PROV_INCRSTATS(pd, rv);
588 } else {
589 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_FINAL,
590 ctx->cc_session, NULL, NULL, NULL, mac, NULL);
591 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
592 }
593
594 /* Release the hold done in kcf_new_ctx() during init step. */
595 KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx);
596 return (rv);
597 }
598
599 /*
600 * See comments for crypto_mac_update() and crypto_mac_final().
601 */
602 int
crypto_mac_single(crypto_context_t context,crypto_data_t * data,crypto_data_t * mac,crypto_call_req_t * cr)603 crypto_mac_single(crypto_context_t context, crypto_data_t *data,
604 crypto_data_t *mac, crypto_call_req_t *cr)
605 {
606 crypto_ctx_t *ctx = (crypto_ctx_t *)context;
607 kcf_context_t *kcf_ctx;
608 kcf_provider_desc_t *pd;
609 int error;
610 kcf_req_params_t params;
611
612
613 if ((ctx == NULL) ||
614 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
615 ((pd = kcf_ctx->kc_prov_desc) == NULL)) {
616 return (CRYPTO_INVALID_CONTEXT);
617 }
618
619
620 /* The fast path for SW providers. */
621 if (CHECK_FASTPATH(cr, pd)) {
622 error = KCF_PROV_MAC(pd, ctx, data, mac, NULL);
623 KCF_PROV_INCRSTATS(pd, error);
624 } else {
625 KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_SINGLE, pd->pd_sid,
626 NULL, NULL, data, mac, NULL);
627 error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
628 }
629
630 /* Release the hold done in kcf_new_ctx() during init step. */
631 KCF_CONTEXT_COND_RELEASE(error, kcf_ctx);
632 return (error);
633 }
634
635 #if defined(_KERNEL)
636 EXPORT_SYMBOL(crypto_mac_prov);
637 EXPORT_SYMBOL(crypto_mac);
638 EXPORT_SYMBOL(crypto_mac_verify_prov);
639 EXPORT_SYMBOL(crypto_mac_verify);
640 EXPORT_SYMBOL(crypto_mac_init_prov);
641 EXPORT_SYMBOL(crypto_mac_init);
642 EXPORT_SYMBOL(crypto_mac_update);
643 EXPORT_SYMBOL(crypto_mac_final);
644 EXPORT_SYMBOL(crypto_mac_single);
645 #endif
646