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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #include <sys/errno.h> 26 #include <sys/types.h> 27 #include <sys/kmem.h> 28 #include <sys/sysmacros.h> 29 #include <sys/crypto/common.h> 30 #include <sys/crypto/impl.h> 31 #include <sys/crypto/api.h> 32 #include <sys/crypto/spi.h> 33 #include <sys/crypto/sched_impl.h> 34 35 #define CRYPTO_OPS_OFFSET(f) offsetof(crypto_ops_t, co_##f) 36 #define CRYPTO_VERIFY_OFFSET(f) offsetof(crypto_verify_ops_t, f) 37 38 /* 39 * Verify entry points. 40 */ 41 42 /* 43 * See comments for crypto_digest_init_prov(). 44 */ 45 int 46 crypto_verify_init_prov(crypto_provider_t provider, crypto_session_id_t sid, 47 crypto_mechanism_t *mech, crypto_key_t *key, crypto_ctx_template_t tmpl, 48 crypto_context_t *ctxp, crypto_call_req_t *crq) 49 { 50 int rv; 51 crypto_ctx_t *ctx; 52 kcf_req_params_t params; 53 kcf_provider_desc_t *pd = provider; 54 kcf_provider_desc_t *real_provider = pd; 55 56 ASSERT(KCF_PROV_REFHELD(pd)); 57 58 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 59 rv = kcf_get_hardware_provider(mech->cm_type, key, 60 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 61 CRYPTO_FG_VERIFY); 62 63 if (rv != CRYPTO_SUCCESS) 64 return (rv); 65 } 66 67 /* Allocate and initialize the canonical context */ 68 if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) { 69 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 70 KCF_PROV_REFRELE(real_provider); 71 return (CRYPTO_HOST_MEMORY); 72 } 73 74 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_INIT, sid, mech, 75 key, NULL, NULL, tmpl); 76 rv = kcf_submit_request(real_provider, ctx, crq, ¶ms, B_FALSE); 77 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 78 KCF_PROV_REFRELE(real_provider); 79 80 if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED)) 81 *ctxp = (crypto_context_t)ctx; 82 else { 83 /* Release the hold done in kcf_new_ctx(). */ 84 KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private); 85 } 86 87 return (rv); 88 } 89 90 91 int 92 crypto_verify_init(crypto_mechanism_t *mech, crypto_key_t *key, 93 crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq) 94 { 95 int error; 96 kcf_mech_entry_t *me; 97 kcf_provider_desc_t *pd; 98 kcf_prov_tried_t *list = NULL; 99 kcf_ctx_template_t *ctx_tmpl; 100 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL; 101 102 retry: 103 /* The pd is returned held */ 104 if ((pd = kcf_get_mech_provider(mech->cm_type, key, &me, &error, 105 list, CRYPTO_FG_VERIFY, 0)) == NULL) { 106 if (list != NULL) 107 kcf_free_triedlist(list); 108 return (error); 109 } 110 111 /* 112 * For SW providers, check the validity of the context template 113 * It is very rare that the generation number mis-matches, so 114 * it is acceptable to fail here, and let the consumer recover by 115 * freeing this tmpl and create a new one for the key and new SW 116 * provider. 117 */ 118 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) && 119 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) { 120 if (ctx_tmpl->ct_generation != me->me_gen_swprov) { 121 if (list != NULL) 122 kcf_free_triedlist(list); 123 KCF_PROV_REFRELE(pd); 124 return (CRYPTO_OLD_CTX_TEMPLATE); 125 } else { 126 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl; 127 } 128 } 129 130 error = crypto_verify_init_prov(pd, pd->pd_sid, mech, key, spi_ctx_tmpl, 131 ctxp, crq); 132 133 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED && 134 IS_RECOVERABLE(error)) { 135 /* Add pd to the linked list of providers tried. */ 136 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL) 137 goto retry; 138 } 139 140 if (list != NULL) 141 kcf_free_triedlist(list); 142 KCF_PROV_REFRELE(pd); 143 return (error); 144 } 145 146 int 147 crypto_verify_single(crypto_context_t context, crypto_data_t *data, 148 crypto_data_t *signature, crypto_call_req_t *cr) 149 { 150 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 151 kcf_context_t *kcf_ctx; 152 kcf_provider_desc_t *pd; 153 int error; 154 kcf_req_params_t params; 155 156 if ((ctx == NULL) || 157 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 158 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 159 return (CRYPTO_INVALID_CONTEXT); 160 } 161 162 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_SINGLE, 0, NULL, 163 NULL, data, signature, NULL); 164 error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 165 166 /* Release the hold done in kcf_new_ctx() during init step. */ 167 KCF_CONTEXT_COND_RELEASE(error, kcf_ctx); 168 return (error); 169 } 170 171 /* 172 * See comments for crypto_digest_update(). 173 */ 174 int 175 crypto_verify_update(crypto_context_t context, crypto_data_t *data, 176 crypto_call_req_t *cr) 177 178 { 179 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 180 kcf_context_t *kcf_ctx; 181 kcf_provider_desc_t *pd; 182 kcf_req_params_t params; 183 int rv; 184 185 if ((ctx == NULL) || 186 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 187 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 188 return (CRYPTO_INVALID_CONTEXT); 189 } 190 191 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER); 192 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_UPDATE, ctx->cc_session, 193 NULL, NULL, data, NULL, NULL); 194 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 195 196 return (rv); 197 } 198 199 /* 200 * See comments for crypto_digest_final(). 201 */ 202 int 203 crypto_verify_final(crypto_context_t context, crypto_data_t *signature, 204 crypto_call_req_t *cr) 205 { 206 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 207 kcf_context_t *kcf_ctx; 208 kcf_provider_desc_t *pd; 209 kcf_req_params_t params; 210 int rv; 211 212 if ((ctx == NULL) || 213 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 214 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 215 return (CRYPTO_INVALID_CONTEXT); 216 } 217 218 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER); 219 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_FINAL, ctx->cc_session, 220 NULL, NULL, NULL, signature, NULL); 221 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 222 223 /* Release the hold done in kcf_new_ctx() during init step. */ 224 KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx); 225 return (rv); 226 } 227 228 int 229 crypto_verify_prov(crypto_provider_t provider, crypto_session_id_t sid, 230 crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *data, 231 crypto_ctx_template_t tmpl, crypto_data_t *signature, 232 crypto_call_req_t *crq) 233 { 234 kcf_req_params_t params; 235 kcf_provider_desc_t *pd = provider; 236 kcf_provider_desc_t *real_provider = pd; 237 int rv; 238 239 ASSERT(KCF_PROV_REFHELD(pd)); 240 241 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 242 rv = kcf_get_hardware_provider(mech->cm_type, key, 243 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 244 CRYPTO_FG_VERIFY_ATOMIC); 245 246 if (rv != CRYPTO_SUCCESS) 247 return (rv); 248 } 249 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, sid, mech, 250 key, data, signature, tmpl); 251 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE); 252 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 253 KCF_PROV_REFRELE(real_provider); 254 255 return (rv); 256 } 257 258 static int 259 verify_vr_atomic_common(crypto_mechanism_t *mech, crypto_key_t *key, 260 crypto_data_t *data, crypto_ctx_template_t tmpl, crypto_data_t *signature, 261 crypto_call_req_t *crq, crypto_func_group_t fg) 262 { 263 int error; 264 kcf_mech_entry_t *me; 265 kcf_provider_desc_t *pd; 266 kcf_req_params_t params; 267 kcf_prov_tried_t *list = NULL; 268 kcf_ctx_template_t *ctx_tmpl; 269 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL; 270 271 retry: 272 /* The pd is returned held */ 273 if ((pd = kcf_get_mech_provider(mech->cm_type, key, &me, &error, 274 list, fg, data->cd_length)) == NULL) { 275 if (list != NULL) 276 kcf_free_triedlist(list); 277 return (error); 278 } 279 280 /* 281 * For SW providers, check the validity of the context template 282 * It is very rare that the generation number mis-matches, so 283 * it is acceptable to fail here, and let the consumer recover by 284 * freeing this tmpl and create a new one for the key and new SW 285 * provider. 286 */ 287 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) && 288 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) { 289 if (ctx_tmpl->ct_generation != me->me_gen_swprov) { 290 if (list != NULL) 291 kcf_free_triedlist(list); 292 KCF_PROV_REFRELE(pd); 293 return (CRYPTO_OLD_CTX_TEMPLATE); 294 } else { 295 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl; 296 } 297 } 298 299 /* The fast path for SW providers. */ 300 if (CHECK_FASTPATH(crq, pd)) { 301 crypto_mechanism_t lmech; 302 303 lmech = *mech; 304 KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech); 305 if (fg == CRYPTO_FG_VERIFY_ATOMIC) 306 error = KCF_PROV_VERIFY_ATOMIC(pd, pd->pd_sid, &lmech, 307 key, data, spi_ctx_tmpl, signature, 308 KCF_SWFP_RHNDL(crq)); 309 else 310 /* Note: The argument order is different from above */ 311 error = KCF_PROV_VERIFY_RECOVER_ATOMIC(pd, pd->pd_sid, 312 &lmech, key, signature, spi_ctx_tmpl, data, 313 KCF_SWFP_RHNDL(crq)); 314 KCF_PROV_INCRSTATS(pd, error); 315 } else { 316 kcf_op_type_t op = ((fg == CRYPTO_FG_VERIFY_ATOMIC) ? 317 KCF_OP_ATOMIC : KCF_OP_VERIFY_RECOVER_ATOMIC); 318 319 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, op, pd->pd_sid, 320 mech, key, data, signature, spi_ctx_tmpl); 321 322 /* no crypto context to carry between multiple parts. */ 323 error = kcf_submit_request(pd, NULL, crq, ¶ms, B_FALSE); 324 } 325 326 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED && 327 IS_RECOVERABLE(error)) { 328 /* Add pd to the linked list of providers tried. */ 329 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL) 330 goto retry; 331 } 332 333 if (list != NULL) 334 kcf_free_triedlist(list); 335 336 KCF_PROV_REFRELE(pd); 337 return (error); 338 } 339 340 int 341 crypto_verify(crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *data, 342 crypto_ctx_template_t tmpl, crypto_data_t *signature, 343 crypto_call_req_t *crq) 344 { 345 return (verify_vr_atomic_common(mech, key, data, tmpl, signature, crq, 346 CRYPTO_FG_VERIFY_ATOMIC)); 347 } 348 349 int 350 crypto_verify_recover_prov(crypto_provider_t provider, crypto_session_id_t sid, 351 crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *signature, 352 crypto_ctx_template_t tmpl, crypto_data_t *data, crypto_call_req_t *crq) 353 { 354 kcf_req_params_t params; 355 kcf_provider_desc_t *pd = provider; 356 kcf_provider_desc_t *real_provider = pd; 357 int rv; 358 359 ASSERT(KCF_PROV_REFHELD(pd)); 360 361 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 362 rv = kcf_get_hardware_provider(mech->cm_type, key, 363 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 364 CRYPTO_FG_VERIFY_RECOVER_ATOMIC); 365 366 if (rv != CRYPTO_SUCCESS) 367 return (rv); 368 } 369 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_VERIFY_RECOVER_ATOMIC, 370 sid, mech, key, data, signature, tmpl); 371 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE); 372 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 373 KCF_PROV_REFRELE(real_provider); 374 375 return (rv); 376 } 377 378 int 379 crypto_verify_recover(crypto_mechanism_t *mech, crypto_key_t *key, 380 crypto_data_t *signature, crypto_ctx_template_t tmpl, crypto_data_t *data, 381 crypto_call_req_t *crq) 382 { 383 return (verify_vr_atomic_common(mech, key, data, tmpl, signature, crq, 384 CRYPTO_FG_VERIFY_RECOVER_ATOMIC)); 385 } 386 387 int 388 crypto_verify_recover_init_prov(crypto_provider_t provider, 389 crypto_session_id_t sid, crypto_mechanism_t *mech, crypto_key_t *key, 390 crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq) 391 { 392 int rv; 393 crypto_ctx_t *ctx; 394 kcf_req_params_t params; 395 kcf_provider_desc_t *pd = provider; 396 kcf_provider_desc_t *real_provider = pd; 397 398 ASSERT(KCF_PROV_REFHELD(pd)); 399 400 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 401 rv = kcf_get_hardware_provider(mech->cm_type, key, 402 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 403 CRYPTO_FG_VERIFY_RECOVER); 404 405 if (rv != CRYPTO_SUCCESS) 406 return (rv); 407 } 408 409 /* Allocate and initialize the canonical context */ 410 if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) { 411 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 412 KCF_PROV_REFRELE(real_provider); 413 return (CRYPTO_HOST_MEMORY); 414 } 415 416 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_VERIFY_RECOVER_INIT, 417 sid, mech, key, NULL, NULL, tmpl); 418 rv = kcf_submit_request(real_provider, ctx, crq, ¶ms, B_FALSE); 419 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 420 KCF_PROV_REFRELE(real_provider); 421 422 if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED)) 423 *ctxp = (crypto_context_t)ctx; 424 else { 425 /* Release the hold done in kcf_new_ctx(). */ 426 KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private); 427 } 428 429 return (rv); 430 } 431 432 int 433 crypto_verify_recover_single(crypto_context_t context, crypto_data_t *signature, 434 crypto_data_t *data, crypto_call_req_t *cr) 435 { 436 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 437 kcf_context_t *kcf_ctx; 438 kcf_provider_desc_t *pd; 439 int error; 440 kcf_req_params_t params; 441 442 if ((ctx == NULL) || 443 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 444 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 445 return (CRYPTO_INVALID_CONTEXT); 446 } 447 448 KCF_WRAP_VERIFY_OPS_PARAMS(¶ms, KCF_OP_VERIFY_RECOVER, 0, NULL, 449 NULL, data, signature, NULL); 450 error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 451 452 /* Release the hold done in kcf_new_ctx() during init step. */ 453 KCF_CONTEXT_COND_RELEASE(error, kcf_ctx); 454 return (error); 455 } 456