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