1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2017-2020, Linaro Limited 4 */ 5 6 #include <assert.h> 7 #include <pkcs11_ta.h> 8 #include <string.h> 9 #include <util.h> 10 #include <tee_api.h> 11 #include <tee_internal_api_extensions.h> 12 13 #include "pkcs11_helpers.h" 14 #include "token_capabilities.h" 15 16 #define ALLOWED_PKCS11_CKFM \ 17 (PKCS11_CKFM_ENCRYPT | PKCS11_CKFM_DECRYPT | \ 18 PKCS11_CKFM_DERIVE | PKCS11_CKFM_DIGEST | \ 19 PKCS11_CKFM_SIGN | PKCS11_CKFM_SIGN_RECOVER | \ 20 PKCS11_CKFM_VERIFY | PKCS11_CKFM_VERIFY_RECOVER | \ 21 PKCS11_CKFM_GENERATE | PKCS11_CKFM_GENERATE_KEY_PAIR | \ 22 PKCS11_CKFM_WRAP | PKCS11_CKFM_UNWRAP) 23 24 /* 25 * Definition of supported processings for a PKCS#11 mechanisms 26 * @id: Mechanism ID 27 * @flags: Valid PKCS11_CKFM_* for a mechanism as per PKCS#11 28 * @one_shot: true of mechanism can be used for a one-short processing 29 * @string: Helper string of the mechanism ID for debug purpose 30 */ 31 struct pkcs11_mechachism_modes { 32 uint32_t id; 33 uint32_t flags; 34 bool one_shot; 35 #if CFG_TEE_TA_LOG_LEVEL > 0 36 const char *string; 37 #endif 38 }; 39 40 #if CFG_TEE_TA_LOG_LEVEL > 0 41 #define MECHANISM(_label, _flags, _single_part) \ 42 { \ 43 .id = _label, \ 44 .one_shot = (_single_part), \ 45 .flags = (_flags), \ 46 .string = #_label, \ 47 } 48 #else 49 #define MECHANISM(_label, _flags, _single_part) \ 50 { \ 51 .id = _label, \ 52 .one_shot = (_single_part), \ 53 .flags = (_flags), \ 54 } 55 #endif 56 57 #define SINGLE_PART_ONLY true 58 #define ANY_PART false 59 60 #define CKFM_CIPHER (PKCS11_CKFM_ENCRYPT | PKCS11_CKFM_DECRYPT) 61 #define CKFM_WRAP_UNWRAP (PKCS11_CKFM_WRAP | PKCS11_CKFM_UNWRAP) 62 #define CKFM_CIPHER_WRAP (CKFM_CIPHER | CKFM_WRAP_UNWRAP) 63 #define CKFM_CIPHER_WRAP_DERIVE (CKFM_CIPHER_WRAP | PKCS11_CKFM_DERIVE) 64 #define CKFM_AUTH_NO_RECOVER (PKCS11_CKFM_SIGN | PKCS11_CKFM_VERIFY) 65 #define CKFM_AUTH_WITH_RECOVER (PKCS11_CKFM_SIGN_RECOVER | \ 66 PKCS11_CKFM_VERIFY_RECOVER) 67 68 /* PKCS#11 specificies permitted operation for each mechanism */ 69 static const struct pkcs11_mechachism_modes pkcs11_modes[] = { 70 /* AES */ 71 MECHANISM(PKCS11_CKM_AES_ECB, CKFM_CIPHER_WRAP, ANY_PART), 72 MECHANISM(PKCS11_CKM_AES_CBC, CKFM_CIPHER_WRAP, ANY_PART), 73 MECHANISM(PKCS11_CKM_AES_CBC_PAD, CKFM_CIPHER_WRAP, ANY_PART), 74 MECHANISM(PKCS11_CKM_AES_CTS, CKFM_CIPHER_WRAP, ANY_PART), 75 MECHANISM(PKCS11_CKM_AES_CTR, CKFM_CIPHER_WRAP, ANY_PART), 76 MECHANISM(PKCS11_CKM_AES_CMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 77 MECHANISM(PKCS11_CKM_AES_CMAC_GENERAL, CKFM_AUTH_NO_RECOVER, ANY_PART), 78 MECHANISM(PKCS11_CKM_AES_ECB_ENCRYPT_DATA, PKCS11_CKFM_DERIVE, 79 ANY_PART), 80 MECHANISM(PKCS11_CKM_AES_CBC_ENCRYPT_DATA, PKCS11_CKFM_DERIVE, 81 ANY_PART), 82 MECHANISM(PKCS11_CKM_AES_KEY_GEN, PKCS11_CKFM_GENERATE, ANY_PART), 83 MECHANISM(PKCS11_CKM_GENERIC_SECRET_KEY_GEN, PKCS11_CKFM_GENERATE, 84 ANY_PART), 85 /* Digest */ 86 MECHANISM(PKCS11_CKM_MD5, PKCS11_CKFM_DIGEST, ANY_PART), 87 MECHANISM(PKCS11_CKM_SHA_1, PKCS11_CKFM_DIGEST, ANY_PART), 88 MECHANISM(PKCS11_CKM_SHA224, PKCS11_CKFM_DIGEST, ANY_PART), 89 MECHANISM(PKCS11_CKM_SHA256, PKCS11_CKFM_DIGEST, ANY_PART), 90 MECHANISM(PKCS11_CKM_SHA384, PKCS11_CKFM_DIGEST, ANY_PART), 91 MECHANISM(PKCS11_CKM_SHA512, PKCS11_CKFM_DIGEST, ANY_PART), 92 /* HMAC */ 93 MECHANISM(PKCS11_CKM_MD5_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 94 MECHANISM(PKCS11_CKM_SHA_1_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 95 MECHANISM(PKCS11_CKM_SHA224_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 96 MECHANISM(PKCS11_CKM_SHA256_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 97 MECHANISM(PKCS11_CKM_SHA384_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 98 MECHANISM(PKCS11_CKM_SHA512_HMAC, CKFM_AUTH_NO_RECOVER, ANY_PART), 99 MECHANISM(PKCS11_CKM_MD5_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, ANY_PART), 100 MECHANISM(PKCS11_CKM_SHA_1_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, 101 ANY_PART), 102 MECHANISM(PKCS11_CKM_SHA224_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, 103 ANY_PART), 104 MECHANISM(PKCS11_CKM_SHA256_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, 105 ANY_PART), 106 MECHANISM(PKCS11_CKM_SHA384_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, 107 ANY_PART), 108 MECHANISM(PKCS11_CKM_SHA512_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER, 109 ANY_PART), 110 /* EC */ 111 MECHANISM(PKCS11_CKM_EC_KEY_PAIR_GEN, PKCS11_CKFM_GENERATE_KEY_PAIR, 112 ANY_PART), 113 MECHANISM(PKCS11_CKM_ECDSA, CKFM_AUTH_NO_RECOVER, SINGLE_PART_ONLY), 114 MECHANISM(PKCS11_CKM_ECDSA_SHA1, CKFM_AUTH_NO_RECOVER, ANY_PART), 115 MECHANISM(PKCS11_CKM_ECDSA_SHA224, CKFM_AUTH_NO_RECOVER, ANY_PART), 116 MECHANISM(PKCS11_CKM_ECDSA_SHA256, CKFM_AUTH_NO_RECOVER, ANY_PART), 117 MECHANISM(PKCS11_CKM_ECDSA_SHA384, CKFM_AUTH_NO_RECOVER, ANY_PART), 118 MECHANISM(PKCS11_CKM_ECDSA_SHA512, CKFM_AUTH_NO_RECOVER, ANY_PART), 119 /* RSA */ 120 MECHANISM(PKCS11_CKM_RSA_PKCS_KEY_PAIR_GEN, 121 PKCS11_CKFM_GENERATE_KEY_PAIR, ANY_PART), 122 MECHANISM(PKCS11_CKM_RSA_PKCS, CKFM_CIPHER_WRAP | CKFM_AUTH_NO_RECOVER | 123 CKFM_AUTH_WITH_RECOVER, SINGLE_PART_ONLY), 124 MECHANISM(PKCS11_CKM_RSA_PKCS_OAEP, CKFM_CIPHER_WRAP, 125 SINGLE_PART_ONLY), 126 MECHANISM(PKCS11_CKM_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, 127 SINGLE_PART_ONLY), 128 MECHANISM(PKCS11_CKM_MD5_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 129 MECHANISM(PKCS11_CKM_SHA1_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 130 MECHANISM(PKCS11_CKM_SHA1_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, ANY_PART), 131 MECHANISM(PKCS11_CKM_SHA256_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 132 MECHANISM(PKCS11_CKM_SHA384_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 133 MECHANISM(PKCS11_CKM_SHA512_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 134 MECHANISM(PKCS11_CKM_SHA256_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, 135 ANY_PART), 136 MECHANISM(PKCS11_CKM_SHA384_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, 137 ANY_PART), 138 MECHANISM(PKCS11_CKM_SHA512_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, 139 ANY_PART), 140 MECHANISM(PKCS11_CKM_SHA224_RSA_PKCS, CKFM_AUTH_NO_RECOVER, ANY_PART), 141 MECHANISM(PKCS11_CKM_SHA224_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER, 142 ANY_PART), 143 }; 144 145 #if CFG_TEE_TA_LOG_LEVEL > 0 146 const char *mechanism_string_id(enum pkcs11_mechanism_id id) 147 { 148 const size_t offset = sizeof("PKCS11_CKM_") - 1; 149 size_t n = 0; 150 151 for (n = 0; n < ARRAY_SIZE(pkcs11_modes); n++) 152 if (pkcs11_modes[n].id == id) 153 return pkcs11_modes[n].string + offset; 154 155 return "Unknown ID"; 156 } 157 #endif /*CFG_TEE_TA_LOG_LEVEL*/ 158 159 /* 160 * Return true if @id is a valid mechanism ID 161 */ 162 bool mechanism_is_valid(enum pkcs11_mechanism_id id) 163 { 164 size_t n = 0; 165 166 for (n = 0; n < ARRAY_SIZE(pkcs11_modes); n++) 167 if (id == pkcs11_modes[n].id) 168 return true; 169 170 return false; 171 } 172 173 /* 174 * Return true if mechanism ID is valid and flags matches PKCS#11 compliancy 175 */ 176 bool __maybe_unused mechanism_flags_complies_pkcs11(uint32_t mechanism_type, 177 uint32_t flags) 178 { 179 size_t n = 0; 180 181 assert((flags & ~ALLOWED_PKCS11_CKFM) == 0); 182 183 for (n = 0; n < ARRAY_SIZE(pkcs11_modes); n++) { 184 if (pkcs11_modes[n].id == mechanism_type) { 185 if (flags & ~pkcs11_modes[n].flags) 186 EMSG("%s flags: 0x%"PRIx32" vs 0x%"PRIx32, 187 id2str_mechanism(mechanism_type), 188 flags, pkcs11_modes[n].flags); 189 190 return (flags & ~pkcs11_modes[n].flags) == 0; 191 } 192 } 193 194 /* Mechanism ID unexpectedly not found */ 195 return false; 196 } 197 198 bool mechanism_is_one_shot_only(uint32_t mechanism_type) 199 { 200 size_t n = 0; 201 202 for (n = 0; n < ARRAY_SIZE(pkcs11_modes); n++) 203 if (pkcs11_modes[n].id == mechanism_type) 204 return pkcs11_modes[n].one_shot; 205 206 /* Mechanism ID unexpectedly not found */ 207 TEE_Panic(PKCS11_RV_NOT_FOUND); 208 /* Dummy return to keep compiler happy */ 209 return false; 210 } 211 212 /* 213 * Field single_part_only is unused from array token_mechanism[], hence 214 * simply use ANY_PART for all mechanism there. 215 */ 216 #define TA_MECHANISM(_label, _flags) MECHANISM((_label), (_flags), ANY_PART) 217 218 /* 219 * Arrays that centralizes the IDs and processing flags for mechanisms 220 * supported by each embedded token. 221 */ 222 const struct pkcs11_mechachism_modes token_mechanism[] = { 223 TA_MECHANISM(PKCS11_CKM_AES_ECB, CKFM_CIPHER_WRAP), 224 TA_MECHANISM(PKCS11_CKM_AES_CBC, CKFM_CIPHER_WRAP), 225 TA_MECHANISM(PKCS11_CKM_AES_CBC_PAD, CKFM_CIPHER), 226 TA_MECHANISM(PKCS11_CKM_AES_CTR, CKFM_CIPHER), 227 TA_MECHANISM(PKCS11_CKM_AES_CTS, CKFM_CIPHER), 228 TA_MECHANISM(PKCS11_CKM_AES_CMAC, CKFM_AUTH_NO_RECOVER), 229 TA_MECHANISM(PKCS11_CKM_AES_CMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 230 TA_MECHANISM(PKCS11_CKM_AES_ECB_ENCRYPT_DATA, PKCS11_CKFM_DERIVE), 231 TA_MECHANISM(PKCS11_CKM_AES_CBC_ENCRYPT_DATA, PKCS11_CKFM_DERIVE), 232 TA_MECHANISM(PKCS11_CKM_AES_KEY_GEN, PKCS11_CKFM_GENERATE), 233 TA_MECHANISM(PKCS11_CKM_GENERIC_SECRET_KEY_GEN, PKCS11_CKFM_GENERATE), 234 TA_MECHANISM(PKCS11_CKM_MD5, PKCS11_CKFM_DIGEST), 235 TA_MECHANISM(PKCS11_CKM_SHA_1, PKCS11_CKFM_DIGEST), 236 TA_MECHANISM(PKCS11_CKM_SHA224, PKCS11_CKFM_DIGEST), 237 TA_MECHANISM(PKCS11_CKM_SHA256, PKCS11_CKFM_DIGEST), 238 TA_MECHANISM(PKCS11_CKM_SHA384, PKCS11_CKFM_DIGEST), 239 TA_MECHANISM(PKCS11_CKM_SHA512, PKCS11_CKFM_DIGEST), 240 TA_MECHANISM(PKCS11_CKM_MD5_HMAC, CKFM_AUTH_NO_RECOVER), 241 TA_MECHANISM(PKCS11_CKM_SHA_1_HMAC, CKFM_AUTH_NO_RECOVER), 242 TA_MECHANISM(PKCS11_CKM_SHA224_HMAC, CKFM_AUTH_NO_RECOVER), 243 TA_MECHANISM(PKCS11_CKM_SHA256_HMAC, CKFM_AUTH_NO_RECOVER), 244 TA_MECHANISM(PKCS11_CKM_SHA384_HMAC, CKFM_AUTH_NO_RECOVER), 245 TA_MECHANISM(PKCS11_CKM_SHA512_HMAC, CKFM_AUTH_NO_RECOVER), 246 TA_MECHANISM(PKCS11_CKM_MD5_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 247 TA_MECHANISM(PKCS11_CKM_SHA_1_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 248 TA_MECHANISM(PKCS11_CKM_SHA224_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 249 TA_MECHANISM(PKCS11_CKM_SHA256_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 250 TA_MECHANISM(PKCS11_CKM_SHA384_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 251 TA_MECHANISM(PKCS11_CKM_SHA512_HMAC_GENERAL, CKFM_AUTH_NO_RECOVER), 252 TA_MECHANISM(PKCS11_CKM_EC_KEY_PAIR_GEN, 253 PKCS11_CKFM_GENERATE_KEY_PAIR), 254 TA_MECHANISM(PKCS11_CKM_ECDSA, CKFM_AUTH_NO_RECOVER), 255 TA_MECHANISM(PKCS11_CKM_ECDSA_SHA1, CKFM_AUTH_NO_RECOVER), 256 TA_MECHANISM(PKCS11_CKM_ECDSA_SHA224, CKFM_AUTH_NO_RECOVER), 257 TA_MECHANISM(PKCS11_CKM_ECDSA_SHA256, CKFM_AUTH_NO_RECOVER), 258 TA_MECHANISM(PKCS11_CKM_ECDSA_SHA384, CKFM_AUTH_NO_RECOVER), 259 TA_MECHANISM(PKCS11_CKM_ECDSA_SHA512, CKFM_AUTH_NO_RECOVER), 260 TA_MECHANISM(PKCS11_CKM_RSA_PKCS_KEY_PAIR_GEN, 261 PKCS11_CKFM_GENERATE_KEY_PAIR), 262 TA_MECHANISM(PKCS11_CKM_RSA_PKCS, CKFM_CIPHER | CKFM_AUTH_NO_RECOVER), 263 TA_MECHANISM(PKCS11_CKM_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 264 TA_MECHANISM(PKCS11_CKM_MD5_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 265 TA_MECHANISM(PKCS11_CKM_SHA1_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 266 TA_MECHANISM(PKCS11_CKM_RSA_PKCS_OAEP, CKFM_CIPHER), 267 TA_MECHANISM(PKCS11_CKM_SHA1_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 268 TA_MECHANISM(PKCS11_CKM_SHA256_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 269 TA_MECHANISM(PKCS11_CKM_SHA384_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 270 TA_MECHANISM(PKCS11_CKM_SHA512_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 271 TA_MECHANISM(PKCS11_CKM_SHA256_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 272 TA_MECHANISM(PKCS11_CKM_SHA384_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 273 TA_MECHANISM(PKCS11_CKM_SHA512_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 274 TA_MECHANISM(PKCS11_CKM_SHA224_RSA_PKCS, CKFM_AUTH_NO_RECOVER), 275 TA_MECHANISM(PKCS11_CKM_SHA224_RSA_PKCS_PSS, CKFM_AUTH_NO_RECOVER), 276 }; 277 278 /* 279 * tee_malloc_mechanism_array - Allocate and fill array of supported mechanisms 280 * @count: [in] [out] Pointer to number of mechanism IDs in client resource 281 * Return allocated array of the supported mechanism IDs 282 * 283 * Allocates array with 32bit cells mechanism IDs for the supported ones only 284 * if *@count covers number mechanism IDs exposed. 285 */ 286 uint32_t *tee_malloc_mechanism_list(size_t *out_count) 287 { 288 size_t n = 0; 289 size_t count = 0; 290 uint32_t *array = NULL; 291 292 for (n = 0; n < ARRAY_SIZE(token_mechanism); n++) 293 if (token_mechanism[n].flags) 294 count++; 295 296 if (*out_count >= count) 297 array = TEE_Malloc(count * sizeof(*array), 298 TEE_USER_MEM_HINT_NO_FILL_ZERO); 299 300 *out_count = count; 301 302 if (!array) 303 return NULL; 304 305 for (n = 0; n < ARRAY_SIZE(token_mechanism); n++) { 306 if (token_mechanism[n].flags) { 307 count--; 308 array[count] = token_mechanism[n].id; 309 } 310 } 311 assert(!count); 312 313 return array; 314 } 315 316 uint32_t mechanism_supported_flags(enum pkcs11_mechanism_id id) 317 { 318 size_t n = 0; 319 320 for (n = 0; n < ARRAY_SIZE(token_mechanism); n++) { 321 if (id == token_mechanism[n].id) { 322 uint32_t flags = token_mechanism[n].flags; 323 324 assert(mechanism_flags_complies_pkcs11(id, flags)); 325 return flags; 326 } 327 } 328 329 return 0; 330 } 331 332 void pkcs11_mechanism_supported_key_sizes(uint32_t proc_id, 333 uint32_t *min_key_size, 334 uint32_t *max_key_size) 335 { 336 switch (proc_id) { 337 case PKCS11_CKM_GENERIC_SECRET_KEY_GEN: 338 /* This mechanism expects the keysize to be returned in bits */ 339 *min_key_size = 1; /* in bits */ 340 *max_key_size = 4096; /* in bits */ 341 break; 342 case PKCS11_CKM_MD5_HMAC: 343 case PKCS11_CKM_MD5_HMAC_GENERAL: 344 *min_key_size = 8; 345 *max_key_size = 64; 346 break; 347 case PKCS11_CKM_SHA_1_HMAC: 348 case PKCS11_CKM_SHA_1_HMAC_GENERAL: 349 *min_key_size = 10; 350 *max_key_size = 64; 351 break; 352 case PKCS11_CKM_SHA224_HMAC: 353 case PKCS11_CKM_SHA224_HMAC_GENERAL: 354 *min_key_size = 14; 355 *max_key_size = 64; 356 break; 357 case PKCS11_CKM_SHA256_HMAC: 358 case PKCS11_CKM_SHA256_HMAC_GENERAL: 359 *min_key_size = 24; 360 *max_key_size = 128; 361 break; 362 case PKCS11_CKM_SHA384_HMAC: 363 case PKCS11_CKM_SHA384_HMAC_GENERAL: 364 *min_key_size = 32; 365 *max_key_size = 128; 366 break; 367 case PKCS11_CKM_SHA512_HMAC: 368 case PKCS11_CKM_SHA512_HMAC_GENERAL: 369 *min_key_size = 32; 370 *max_key_size = 128; 371 break; 372 case PKCS11_CKM_AES_KEY_GEN: 373 case PKCS11_CKM_AES_ECB: 374 case PKCS11_CKM_AES_CBC: 375 case PKCS11_CKM_AES_CBC_PAD: 376 case PKCS11_CKM_AES_CTR: 377 case PKCS11_CKM_AES_CTS: 378 case PKCS11_CKM_AES_CMAC: 379 case PKCS11_CKM_AES_CMAC_GENERAL: 380 *min_key_size = 16; 381 *max_key_size = 32; 382 break; 383 case PKCS11_CKM_EC_KEY_PAIR_GEN: 384 case PKCS11_CKM_ECDSA: 385 case PKCS11_CKM_ECDSA_SHA1: 386 case PKCS11_CKM_ECDSA_SHA224: 387 case PKCS11_CKM_ECDSA_SHA256: 388 case PKCS11_CKM_ECDSA_SHA384: 389 case PKCS11_CKM_ECDSA_SHA512: 390 *min_key_size = 160; /* in bits */ 391 *max_key_size = 521; /* in bits */ 392 break; 393 case PKCS11_CKM_RSA_PKCS_KEY_PAIR_GEN: 394 case PKCS11_CKM_RSA_PKCS: 395 case PKCS11_CKM_MD5_RSA_PKCS: 396 case PKCS11_CKM_SHA1_RSA_PKCS: 397 case PKCS11_CKM_RSA_PKCS_OAEP: 398 case PKCS11_CKM_SHA1_RSA_PKCS_PSS: 399 case PKCS11_CKM_SHA256_RSA_PKCS: 400 case PKCS11_CKM_SHA384_RSA_PKCS: 401 case PKCS11_CKM_SHA512_RSA_PKCS: 402 case PKCS11_CKM_SHA256_RSA_PKCS_PSS: 403 case PKCS11_CKM_SHA384_RSA_PKCS_PSS: 404 case PKCS11_CKM_SHA512_RSA_PKCS_PSS: 405 case PKCS11_CKM_SHA224_RSA_PKCS: 406 case PKCS11_CKM_SHA224_RSA_PKCS_PSS: 407 *min_key_size = 256; /* in bits */ 408 *max_key_size = 4096; /* in bits */ 409 break; 410 default: 411 *min_key_size = 0; 412 *max_key_size = 0; 413 break; 414 } 415 } 416 417 void mechanism_supported_key_sizes_bytes(uint32_t proc_id, 418 uint32_t *min_key_size, 419 uint32_t *max_key_size) 420 { 421 pkcs11_mechanism_supported_key_sizes(proc_id, min_key_size, 422 max_key_size); 423 424 switch (proc_id) { 425 case PKCS11_CKM_GENERIC_SECRET_KEY_GEN: 426 case PKCS11_CKM_EC_KEY_PAIR_GEN: 427 case PKCS11_CKM_ECDSA: 428 case PKCS11_CKM_ECDSA_SHA1: 429 case PKCS11_CKM_ECDSA_SHA224: 430 case PKCS11_CKM_ECDSA_SHA256: 431 case PKCS11_CKM_ECDSA_SHA384: 432 case PKCS11_CKM_ECDSA_SHA512: 433 case PKCS11_CKM_RSA_PKCS_KEY_PAIR_GEN: 434 /* Size is in bits -> convert to bytes and ceil */ 435 *min_key_size = ROUNDUP(*min_key_size, 8) / 8; 436 *max_key_size = ROUNDUP(*max_key_size, 8) / 8; 437 break; 438 default: 439 /* Size is already in bytes */ 440 break; 441 } 442 } 443