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_SIGN_OFFSET(f) offsetof(crypto_sign_ops_t, f) 37 38 /* 39 * Sign entry points. 40 */ 41 42 /* 43 * See comments for crypto_digest_init_prov(). 44 */ 45 int 46 crypto_sign_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_SIGN); 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_SIGN_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 int 91 crypto_sign_init(crypto_mechanism_t *mech, crypto_key_t *key, 92 crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq) 93 { 94 int error; 95 kcf_mech_entry_t *me; 96 kcf_provider_desc_t *pd; 97 kcf_prov_tried_t *list = NULL; 98 kcf_ctx_template_t *ctx_tmpl; 99 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL; 100 101 retry: 102 /* The pd is returned held */ 103 if ((pd = kcf_get_mech_provider(mech->cm_type, key, &me, &error, 104 list, CRYPTO_FG_SIGN, 0)) == NULL) { 105 if (list != NULL) 106 kcf_free_triedlist(list); 107 return (error); 108 } 109 110 /* 111 * For SW providers, check the validity of the context template 112 * It is very rare that the generation number mis-matches, so 113 * it is acceptable to fail here, and let the consumer recover by 114 * freeing this tmpl and create a new one for the key and new SW 115 * provider. 116 */ 117 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) && 118 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) { 119 if (ctx_tmpl->ct_generation != me->me_gen_swprov) { 120 if (list != NULL) 121 kcf_free_triedlist(list); 122 KCF_PROV_REFRELE(pd); 123 return (CRYPTO_OLD_CTX_TEMPLATE); 124 } else { 125 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl; 126 } 127 } 128 129 error = crypto_sign_init_prov(pd, pd->pd_sid, mech, key, spi_ctx_tmpl, 130 ctxp, crq); 131 132 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED && 133 IS_RECOVERABLE(error)) { 134 /* Add pd to the linked list of providers tried. */ 135 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL) 136 goto retry; 137 } 138 139 if (list != NULL) 140 kcf_free_triedlist(list); 141 KCF_PROV_REFRELE(pd); 142 return (error); 143 } 144 145 int 146 crypto_sign_single(crypto_context_t context, crypto_data_t *data, 147 crypto_data_t *signature, crypto_call_req_t *cr) 148 { 149 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 150 kcf_context_t *kcf_ctx; 151 kcf_provider_desc_t *pd; 152 int error; 153 kcf_req_params_t params; 154 155 if ((ctx == NULL) || 156 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 157 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 158 return (CRYPTO_INVALID_CONTEXT); 159 } 160 161 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SINGLE, 0, NULL, 162 NULL, data, signature, NULL); 163 error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 164 165 /* Release the hold done in kcf_new_ctx() during init step. */ 166 KCF_CONTEXT_COND_RELEASE(error, kcf_ctx); 167 return (error); 168 } 169 170 /* 171 * See comments for crypto_digest_update(). 172 */ 173 int 174 crypto_sign_update(crypto_context_t context, crypto_data_t *data, 175 crypto_call_req_t *cr) 176 { 177 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 178 kcf_context_t *kcf_ctx; 179 kcf_provider_desc_t *pd; 180 kcf_req_params_t params; 181 int rv; 182 183 if ((ctx == NULL) || 184 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 185 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 186 return (CRYPTO_INVALID_CONTEXT); 187 } 188 189 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER); 190 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_UPDATE, ctx->cc_session, NULL, 191 NULL, data, NULL, NULL); 192 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 193 194 return (rv); 195 } 196 197 /* 198 * See comments for crypto_digest_final(). 199 */ 200 int 201 crypto_sign_final(crypto_context_t context, crypto_data_t *signature, 202 crypto_call_req_t *cr) 203 { 204 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 205 kcf_context_t *kcf_ctx; 206 kcf_provider_desc_t *pd; 207 int rv; 208 kcf_req_params_t params; 209 210 if ((ctx == NULL) || 211 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 212 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 213 return (CRYPTO_INVALID_CONTEXT); 214 } 215 216 ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER); 217 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_FINAL, ctx->cc_session, NULL, 218 NULL, NULL, signature, NULL); 219 rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 220 221 /* Release the hold done in kcf_new_ctx() during init step. */ 222 KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx); 223 return (rv); 224 } 225 226 int 227 crypto_sign_prov(crypto_provider_t provider, crypto_session_id_t sid, 228 crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *data, 229 crypto_ctx_template_t tmpl, crypto_data_t *signature, 230 crypto_call_req_t *crq) 231 { 232 kcf_req_params_t params; 233 kcf_provider_desc_t *pd = provider; 234 kcf_provider_desc_t *real_provider = pd; 235 int rv; 236 237 ASSERT(KCF_PROV_REFHELD(pd)); 238 239 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 240 rv = kcf_get_hardware_provider(mech->cm_type, key, 241 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 242 CRYPTO_FG_SIGN_ATOMIC); 243 244 if (rv != CRYPTO_SUCCESS) 245 return (rv); 246 } 247 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, sid, mech, 248 key, data, signature, tmpl); 249 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE); 250 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 251 KCF_PROV_REFRELE(real_provider); 252 253 return (rv); 254 } 255 256 static int 257 sign_sr_atomic_common(crypto_mechanism_t *mech, crypto_key_t *key, 258 crypto_data_t *data, crypto_ctx_template_t tmpl, crypto_data_t *signature, 259 crypto_call_req_t *crq, crypto_func_group_t fg) 260 { 261 int error; 262 kcf_mech_entry_t *me; 263 kcf_provider_desc_t *pd; 264 kcf_req_params_t params; 265 kcf_prov_tried_t *list = NULL; 266 kcf_ctx_template_t *ctx_tmpl; 267 crypto_spi_ctx_template_t spi_ctx_tmpl = NULL; 268 269 retry: 270 /* The pd is returned held */ 271 if ((pd = kcf_get_mech_provider(mech->cm_type, key, &me, &error, 272 list, fg, data->cd_length)) == NULL) { 273 if (list != NULL) 274 kcf_free_triedlist(list); 275 return (error); 276 } 277 278 /* 279 * For SW providers, check the validity of the context template 280 * It is very rare that the generation number mis-matches, so 281 * it is acceptable to fail here, and let the consumer recover by 282 * freeing this tmpl and create a new one for the key and new SW 283 * provider. 284 */ 285 if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) && 286 ((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) { 287 if (ctx_tmpl->ct_generation != me->me_gen_swprov) { 288 if (list != NULL) 289 kcf_free_triedlist(list); 290 KCF_PROV_REFRELE(pd); 291 return (CRYPTO_OLD_CTX_TEMPLATE); 292 } else { 293 spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl; 294 } 295 } 296 297 /* The fast path for SW providers. */ 298 if (CHECK_FASTPATH(crq, pd)) { 299 crypto_mechanism_t lmech; 300 301 lmech = *mech; 302 KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech); 303 if (fg == CRYPTO_FG_SIGN_ATOMIC) 304 error = KCF_PROV_SIGN_ATOMIC(pd, pd->pd_sid, &lmech, 305 key, data, spi_ctx_tmpl, signature, 306 KCF_SWFP_RHNDL(crq)); 307 else 308 error = KCF_PROV_SIGN_RECOVER_ATOMIC(pd, pd->pd_sid, 309 &lmech, key, data, spi_ctx_tmpl, signature, 310 KCF_SWFP_RHNDL(crq)); 311 KCF_PROV_INCRSTATS(pd, error); 312 } else { 313 kcf_op_type_t op = ((fg == CRYPTO_FG_SIGN_ATOMIC) ? 314 KCF_OP_ATOMIC : KCF_OP_SIGN_RECOVER_ATOMIC); 315 316 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, op, pd->pd_sid, 317 mech, key, data, signature, spi_ctx_tmpl); 318 319 /* no crypto context to carry between multiple parts. */ 320 error = kcf_submit_request(pd, NULL, crq, ¶ms, B_FALSE); 321 } 322 323 if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED && 324 IS_RECOVERABLE(error)) { 325 /* Add pd to the linked list of providers tried. */ 326 if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL) 327 goto retry; 328 } 329 330 if (list != NULL) 331 kcf_free_triedlist(list); 332 333 KCF_PROV_REFRELE(pd); 334 return (error); 335 } 336 337 int 338 crypto_sign(crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *data, 339 crypto_ctx_template_t tmpl, crypto_data_t *signature, 340 crypto_call_req_t *crq) 341 { 342 return (sign_sr_atomic_common(mech, key, data, tmpl, signature, crq, 343 CRYPTO_FG_SIGN_ATOMIC)); 344 } 345 346 int 347 crypto_sign_recover_prov(crypto_provider_t provider, crypto_session_id_t sid, 348 crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *data, 349 crypto_ctx_template_t tmpl, crypto_data_t *signature, 350 crypto_call_req_t *crq) 351 { 352 kcf_req_params_t params; 353 kcf_provider_desc_t *pd = provider; 354 kcf_provider_desc_t *real_provider = pd; 355 int rv; 356 357 ASSERT(KCF_PROV_REFHELD(pd)); 358 359 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 360 rv = kcf_get_hardware_provider(mech->cm_type, key, 361 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 362 CRYPTO_FG_SIGN_RECOVER_ATOMIC); 363 364 if (rv != CRYPTO_SUCCESS) 365 return (rv); 366 } 367 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SIGN_RECOVER_ATOMIC, sid, mech, 368 key, data, signature, tmpl); 369 rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE); 370 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 371 KCF_PROV_REFRELE(real_provider); 372 373 return (rv); 374 } 375 376 int 377 crypto_sign_recover(crypto_mechanism_t *mech, crypto_key_t *key, 378 crypto_data_t *data, crypto_ctx_template_t tmpl, crypto_data_t *signature, 379 crypto_call_req_t *crq) 380 { 381 return (sign_sr_atomic_common(mech, key, data, tmpl, signature, crq, 382 CRYPTO_FG_SIGN_RECOVER_ATOMIC)); 383 } 384 385 int 386 crypto_sign_recover_init_prov(crypto_provider_t provider, 387 crypto_session_id_t sid, crypto_mechanism_t *mech, crypto_key_t *key, 388 crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq) 389 { 390 int rv; 391 crypto_ctx_t *ctx; 392 kcf_req_params_t params; 393 kcf_provider_desc_t *pd = provider; 394 kcf_provider_desc_t *real_provider = pd; 395 396 ASSERT(KCF_PROV_REFHELD(pd)); 397 398 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) { 399 rv = kcf_get_hardware_provider(mech->cm_type, key, 400 CRYPTO_MECH_INVALID, NULL, pd, &real_provider, 401 CRYPTO_FG_SIGN_RECOVER); 402 403 if (rv != CRYPTO_SUCCESS) 404 return (rv); 405 } 406 407 /* Allocate and initialize the canonical context */ 408 if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) { 409 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 410 KCF_PROV_REFRELE(real_provider); 411 return (CRYPTO_HOST_MEMORY); 412 } 413 414 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SIGN_RECOVER_INIT, sid, mech, 415 key, NULL, NULL, tmpl); 416 rv = kcf_submit_request(real_provider, ctx, crq, ¶ms, B_FALSE); 417 if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) 418 KCF_PROV_REFRELE(real_provider); 419 420 if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED)) 421 *ctxp = (crypto_context_t)ctx; 422 else { 423 /* Release the hold done in kcf_new_ctx(). */ 424 KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private); 425 } 426 427 return (rv); 428 } 429 430 int 431 crypto_sign_recover_single(crypto_context_t context, crypto_data_t *data, 432 crypto_data_t *signature, crypto_call_req_t *cr) 433 { 434 crypto_ctx_t *ctx = (crypto_ctx_t *)context; 435 kcf_context_t *kcf_ctx; 436 kcf_provider_desc_t *pd; 437 int error; 438 kcf_req_params_t params; 439 440 if ((ctx == NULL) || 441 ((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) || 442 ((pd = kcf_ctx->kc_prov_desc) == NULL)) { 443 return (CRYPTO_INVALID_CONTEXT); 444 } 445 446 KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SIGN_RECOVER, 0, NULL, 447 NULL, data, signature, NULL); 448 error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE); 449 450 /* Release the hold done in kcf_new_ctx() during init step. */ 451 KCF_CONTEXT_COND_RELEASE(error, kcf_ctx); 452 return (error); 453 } 454