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
mechanism_string_id(enum pkcs11_mechanism_id id)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 */
mechanism_is_valid(enum pkcs11_mechanism_id id)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 */
mechanism_flags_complies_pkcs11(uint32_t mechanism_type,uint32_t flags)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
mechanism_is_one_shot_only(uint32_t mechanism_type)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 */
tee_malloc_mechanism_list(size_t * out_count)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
mechanism_supported_flags(enum pkcs11_mechanism_id id)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
pkcs11_mechanism_supported_key_sizes(uint32_t proc_id,uint32_t * min_key_size,uint32_t * max_key_size)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
mechanism_supported_key_sizes_bytes(uint32_t proc_id,uint32_t * min_key_size,uint32_t * max_key_size)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