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Commit | Line | Data |
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62867571 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
62867571 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
4d94ae00 BM |
12 | #include <openssl/bn.h> |
13 | #include <openssl/err.h> | |
ec577822 BM |
14 | #include <openssl/objects.h> |
15 | #include <openssl/evp.h> | |
ec577822 | 16 | #include <openssl/x509.h> |
3c27208f RS |
17 | #include <openssl/rsa.h> |
18 | #include <openssl/dsa.h> | |
19 | #include <openssl/dh.h> | |
20 | #include <openssl/engine.h> | |
01b8b3c7 | 21 | |
5fe736e5 | 22 | #include "internal/asn1_int.h" |
3aeb9348 | 23 | #include "internal/evp_int.h" |
18e377b4 | 24 | |
d02b48c6 | 25 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
bb2297a4 | 26 | |
6b691a5c | 27 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
0f113f3e MC |
28 | { |
29 | if (pkey && pkey->ameth && pkey->ameth->pkey_bits) | |
30 | return pkey->ameth->pkey_bits(pkey); | |
31 | return 0; | |
32 | } | |
58964a49 | 33 | |
2514fa79 | 34 | int EVP_PKEY_security_bits(const EVP_PKEY *pkey) |
0f113f3e MC |
35 | { |
36 | if (pkey == NULL) | |
37 | return 0; | |
38 | if (!pkey->ameth || !pkey->ameth->pkey_security_bits) | |
39 | return -2; | |
40 | return pkey->ameth->pkey_security_bits(pkey); | |
41 | } | |
2514fa79 | 42 | |
6b691a5c | 43 | int EVP_PKEY_size(EVP_PKEY *pkey) |
0f113f3e MC |
44 | { |
45 | if (pkey && pkey->ameth && pkey->ameth->pkey_size) | |
46 | return pkey->ameth->pkey_size(pkey); | |
47 | return 0; | |
48 | } | |
d02b48c6 | 49 | |
6b691a5c | 50 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
0f113f3e | 51 | { |
cf1b7d96 | 52 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
53 | if (pkey->type == EVP_PKEY_DSA) { |
54 | int ret = pkey->save_parameters; | |
55 | ||
56 | if (mode >= 0) | |
57 | pkey->save_parameters = mode; | |
58 | return (ret); | |
59 | } | |
4d94ae00 | 60 | #endif |
5488bb61 | 61 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
62 | if (pkey->type == EVP_PKEY_EC) { |
63 | int ret = pkey->save_parameters; | |
64 | ||
65 | if (mode >= 0) | |
66 | pkey->save_parameters = mode; | |
67 | return (ret); | |
68 | } | |
d02b48c6 | 69 | #endif |
0f113f3e MC |
70 | return (0); |
71 | } | |
d02b48c6 | 72 | |
a8b72844 | 73 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
0f113f3e | 74 | { |
2986ecdc DSH |
75 | if (to->type == EVP_PKEY_NONE) { |
76 | if (EVP_PKEY_set_type(to, from->type) == 0) | |
77 | return 0; | |
78 | } else if (to->type != from->type) { | |
0f113f3e MC |
79 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES); |
80 | goto err; | |
81 | } | |
82 | ||
83 | if (EVP_PKEY_missing_parameters(from)) { | |
84 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS); | |
85 | goto err; | |
86 | } | |
f72f00d4 DSH |
87 | |
88 | if (!EVP_PKEY_missing_parameters(to)) { | |
89 | if (EVP_PKEY_cmp_parameters(to, from) == 1) | |
90 | return 1; | |
91 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS); | |
92 | return 0; | |
93 | } | |
94 | ||
0f113f3e MC |
95 | if (from->ameth && from->ameth->param_copy) |
96 | return from->ameth->param_copy(to, from); | |
97 | err: | |
98 | return 0; | |
99 | } | |
d02b48c6 | 100 | |
af0f0f3e | 101 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) |
0f113f3e MC |
102 | { |
103 | if (pkey->ameth && pkey->ameth->param_missing) | |
104 | return pkey->ameth->param_missing(pkey); | |
105 | return 0; | |
106 | } | |
d02b48c6 | 107 | |
af0f0f3e | 108 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
109 | { |
110 | if (a->type != b->type) | |
111 | return -1; | |
112 | if (a->ameth && a->ameth->param_cmp) | |
113 | return a->ameth->param_cmp(a, b); | |
114 | return -2; | |
115 | } | |
58964a49 | 116 | |
af0f0f3e | 117 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
118 | { |
119 | if (a->type != b->type) | |
120 | return -1; | |
121 | ||
122 | if (a->ameth) { | |
123 | int ret; | |
124 | /* Compare parameters if the algorithm has them */ | |
125 | if (a->ameth->param_cmp) { | |
126 | ret = a->ameth->param_cmp(a, b); | |
127 | if (ret <= 0) | |
128 | return ret; | |
129 | } | |
130 | ||
131 | if (a->ameth->pub_cmp) | |
132 | return a->ameth->pub_cmp(a, b); | |
133 | } | |
134 | ||
135 | return -2; | |
136 | } | |
e6526fbf | 137 | |
6b691a5c | 138 | EVP_PKEY *EVP_PKEY_new(void) |
0f113f3e | 139 | { |
a2d0baa2 | 140 | EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret)); |
0f113f3e | 141 | |
0f113f3e MC |
142 | if (ret == NULL) { |
143 | EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); | |
03273d61 | 144 | return NULL; |
0f113f3e MC |
145 | } |
146 | ret->type = EVP_PKEY_NONE; | |
147 | ret->save_type = EVP_PKEY_NONE; | |
148 | ret->references = 1; | |
0f113f3e | 149 | ret->save_parameters = 1; |
03273d61 AG |
150 | ret->lock = CRYPTO_THREAD_lock_new(); |
151 | if (ret->lock == NULL) { | |
152 | EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); | |
153 | OPENSSL_free(ret); | |
154 | return NULL; | |
155 | } | |
156 | return ret; | |
0f113f3e MC |
157 | } |
158 | ||
c5ebfcab | 159 | int EVP_PKEY_up_ref(EVP_PKEY *pkey) |
2872dbe1 | 160 | { |
03273d61 | 161 | int i; |
c5ebfcab F |
162 | |
163 | if (CRYPTO_atomic_add(&pkey->references, 1, &i, pkey->lock) <= 0) | |
164 | return 0; | |
165 | ||
166 | REF_PRINT_COUNT("EVP_PKEY", pkey); | |
167 | REF_ASSERT_ISNT(i < 2); | |
168 | return ((i > 1) ? 1 : 0); | |
2872dbe1 DSH |
169 | } |
170 | ||
0f113f3e MC |
171 | /* |
172 | * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey | |
173 | * is NULL just return 1 or 0 if the algorithm exists. | |
01b8b3c7 DSH |
174 | */ |
175 | ||
176 | static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len) | |
0f113f3e MC |
177 | { |
178 | const EVP_PKEY_ASN1_METHOD *ameth; | |
179 | ENGINE *e = NULL; | |
180 | if (pkey) { | |
181 | if (pkey->pkey.ptr) | |
182 | EVP_PKEY_free_it(pkey); | |
183 | /* | |
184 | * If key type matches and a method exists then this lookup has | |
185 | * succeeded once so just indicate success. | |
186 | */ | |
187 | if ((type == pkey->save_type) && pkey->ameth) | |
188 | return 1; | |
01b8b3c7 | 189 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 190 | /* If we have an ENGINE release it */ |
7c96dbcd RS |
191 | ENGINE_finish(pkey->engine); |
192 | pkey->engine = NULL; | |
01b8b3c7 | 193 | #endif |
0f113f3e MC |
194 | } |
195 | if (str) | |
196 | ameth = EVP_PKEY_asn1_find_str(&e, str, len); | |
197 | else | |
198 | ameth = EVP_PKEY_asn1_find(&e, type); | |
01b8b3c7 | 199 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd | 200 | if (pkey == NULL) |
0f113f3e | 201 | ENGINE_finish(e); |
01b8b3c7 | 202 | #endif |
7c96dbcd | 203 | if (ameth == NULL) { |
0f113f3e MC |
204 | EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); |
205 | return 0; | |
206 | } | |
207 | if (pkey) { | |
208 | pkey->ameth = ameth; | |
209 | pkey->engine = e; | |
210 | ||
211 | pkey->type = pkey->ameth->pkey_id; | |
212 | pkey->save_type = type; | |
213 | } | |
214 | return 1; | |
215 | } | |
01b8b3c7 DSH |
216 | |
217 | int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) | |
0f113f3e MC |
218 | { |
219 | return pkey_set_type(pkey, type, NULL, -1); | |
220 | } | |
01b8b3c7 DSH |
221 | |
222 | int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len) | |
0f113f3e MC |
223 | { |
224 | return pkey_set_type(pkey, EVP_PKEY_NONE, str, len); | |
225 | } | |
01b8b3c7 DSH |
226 | |
227 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) | |
0f113f3e | 228 | { |
e34c66c6 | 229 | if (pkey == NULL || !EVP_PKEY_set_type(pkey, type)) |
0f113f3e MC |
230 | return 0; |
231 | pkey->pkey.ptr = key; | |
232 | return (key != NULL); | |
233 | } | |
d02b48c6 | 234 | |
3aeb9348 | 235 | void *EVP_PKEY_get0(const EVP_PKEY *pkey) |
0f113f3e MC |
236 | { |
237 | return pkey->pkey.ptr; | |
238 | } | |
db98bbc1 | 239 | |
ebad0b0b NM |
240 | const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len) |
241 | { | |
242 | ASN1_OCTET_STRING *os = NULL; | |
243 | if (pkey->type != EVP_PKEY_HMAC) { | |
244 | EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY); | |
245 | return NULL; | |
246 | } | |
247 | os = EVP_PKEY_get0(pkey); | |
248 | *len = os->length; | |
249 | return os->data; | |
250 | } | |
251 | ||
cf1b7d96 | 252 | #ifndef OPENSSL_NO_RSA |
c7cb16a8 | 253 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 254 | { |
0f113f3e MC |
255 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
256 | if (ret) | |
257 | RSA_up_ref(key); | |
258 | return ret; | |
52664f50 DSH |
259 | } |
260 | ||
2872dbe1 | 261 | RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey) |
0f113f3e MC |
262 | { |
263 | if (pkey->type != EVP_PKEY_RSA) { | |
2872dbe1 | 264 | EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY); |
0f113f3e MC |
265 | return NULL; |
266 | } | |
0f113f3e | 267 | return pkey->pkey.rsa; |
f769ce3e | 268 | } |
2872dbe1 DSH |
269 | |
270 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) | |
271 | { | |
272 | RSA *ret = EVP_PKEY_get0_RSA(pkey); | |
273 | if (ret != NULL) | |
274 | RSA_up_ref(ret); | |
275 | return ret; | |
276 | } | |
f769ce3e DSH |
277 | #endif |
278 | ||
cf1b7d96 | 279 | #ifndef OPENSSL_NO_DSA |
c7cb16a8 | 280 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 281 | { |
0f113f3e MC |
282 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
283 | if (ret) | |
284 | DSA_up_ref(key); | |
285 | return ret; | |
52664f50 DSH |
286 | } |
287 | ||
2872dbe1 | 288 | DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey) |
0f113f3e MC |
289 | { |
290 | if (pkey->type != EVP_PKEY_DSA) { | |
2872dbe1 | 291 | EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY); |
0f113f3e MC |
292 | return NULL; |
293 | } | |
0f113f3e | 294 | return pkey->pkey.dsa; |
f769ce3e | 295 | } |
2872dbe1 DSH |
296 | |
297 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) | |
298 | { | |
299 | DSA *ret = EVP_PKEY_get0_DSA(pkey); | |
300 | if (ret != NULL) | |
301 | DSA_up_ref(ret); | |
302 | return ret; | |
303 | } | |
f769ce3e DSH |
304 | #endif |
305 | ||
14a7cfb3 | 306 | #ifndef OPENSSL_NO_EC |
4d94ae00 | 307 | |
14a7cfb3 | 308 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) |
4d94ae00 | 309 | { |
0f113f3e MC |
310 | int ret = EVP_PKEY_assign_EC_KEY(pkey, key); |
311 | if (ret) | |
312 | EC_KEY_up_ref(key); | |
313 | return ret; | |
4d94ae00 BM |
314 | } |
315 | ||
2872dbe1 | 316 | EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey) |
4d94ae00 | 317 | { |
0f113f3e | 318 | if (pkey->type != EVP_PKEY_EC) { |
2872dbe1 | 319 | EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); |
0f113f3e MC |
320 | return NULL; |
321 | } | |
0f113f3e | 322 | return pkey->pkey.ec; |
4d94ae00 | 323 | } |
2872dbe1 DSH |
324 | |
325 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) | |
326 | { | |
327 | EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey); | |
328 | if (ret != NULL) | |
329 | EC_KEY_up_ref(ret); | |
330 | return ret; | |
331 | } | |
4d94ae00 BM |
332 | #endif |
333 | ||
cf1b7d96 | 334 | #ifndef OPENSSL_NO_DH |
52664f50 | 335 | |
c7cb16a8 | 336 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 337 | { |
0f113f3e MC |
338 | int ret = EVP_PKEY_assign_DH(pkey, key); |
339 | if (ret) | |
340 | DH_up_ref(key); | |
341 | return ret; | |
52664f50 DSH |
342 | } |
343 | ||
2872dbe1 | 344 | DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey) |
0f113f3e MC |
345 | { |
346 | if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) { | |
2872dbe1 | 347 | EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY); |
0f113f3e MC |
348 | return NULL; |
349 | } | |
0f113f3e | 350 | return pkey->pkey.dh; |
f769ce3e | 351 | } |
2872dbe1 DSH |
352 | |
353 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) | |
354 | { | |
355 | DH *ret = EVP_PKEY_get0_DH(pkey); | |
356 | if (ret != NULL) | |
357 | DH_up_ref(ret); | |
358 | return ret; | |
359 | } | |
f769ce3e DSH |
360 | #endif |
361 | ||
6b691a5c | 362 | int EVP_PKEY_type(int type) |
0f113f3e MC |
363 | { |
364 | int ret; | |
365 | const EVP_PKEY_ASN1_METHOD *ameth; | |
366 | ENGINE *e; | |
367 | ameth = EVP_PKEY_asn1_find(&e, type); | |
368 | if (ameth) | |
369 | ret = ameth->pkey_id; | |
370 | else | |
371 | ret = NID_undef; | |
01b8b3c7 | 372 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd | 373 | ENGINE_finish(e); |
01b8b3c7 | 374 | #endif |
0f113f3e MC |
375 | return ret; |
376 | } | |
d02b48c6 | 377 | |
7f57b076 | 378 | int EVP_PKEY_id(const EVP_PKEY *pkey) |
0f113f3e MC |
379 | { |
380 | return pkey->type; | |
381 | } | |
7f57b076 DSH |
382 | |
383 | int EVP_PKEY_base_id(const EVP_PKEY *pkey) | |
0f113f3e MC |
384 | { |
385 | return EVP_PKEY_type(pkey->type); | |
386 | } | |
7f57b076 | 387 | |
6b691a5c | 388 | void EVP_PKEY_free(EVP_PKEY *x) |
0f113f3e MC |
389 | { |
390 | int i; | |
d02b48c6 | 391 | |
0f113f3e MC |
392 | if (x == NULL) |
393 | return; | |
d02b48c6 | 394 | |
03273d61 | 395 | CRYPTO_atomic_add(&x->references, -1, &i, x->lock); |
f3f1cf84 | 396 | REF_PRINT_COUNT("EVP_PKEY", x); |
0f113f3e MC |
397 | if (i > 0) |
398 | return; | |
f3f1cf84 | 399 | REF_ASSERT_ISNT(i < 0); |
0f113f3e | 400 | EVP_PKEY_free_it(x); |
222561fe | 401 | sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); |
0f113f3e MC |
402 | OPENSSL_free(x); |
403 | } | |
d02b48c6 | 404 | |
6b691a5c | 405 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
0f113f3e | 406 | { |
c5ba2d99 | 407 | /* internal function; x is never NULL */ |
0f113f3e MC |
408 | if (x->ameth && x->ameth->pkey_free) { |
409 | x->ameth->pkey_free(x); | |
410 | x->pkey.ptr = NULL; | |
411 | } | |
01b8b3c7 | 412 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd RS |
413 | ENGINE_finish(x->engine); |
414 | x->engine = NULL; | |
01b8b3c7 | 415 | #endif |
03273d61 | 416 | CRYPTO_THREAD_lock_free(x->lock); |
0f113f3e | 417 | } |
d02b48c6 | 418 | |
35208f36 | 419 | static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, |
0f113f3e MC |
420 | const char *kstr) |
421 | { | |
422 | BIO_indent(out, indent, 128); | |
423 | BIO_printf(out, "%s algorithm \"%s\" unsupported\n", | |
424 | kstr, OBJ_nid2ln(pkey->type)); | |
425 | return 1; | |
426 | } | |
35208f36 DSH |
427 | |
428 | int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
429 | int indent, ASN1_PCTX *pctx) |
430 | { | |
431 | if (pkey->ameth && pkey->ameth->pub_print) | |
432 | return pkey->ameth->pub_print(out, pkey, indent, pctx); | |
433 | ||
434 | return unsup_alg(out, pkey, indent, "Public Key"); | |
435 | } | |
35208f36 DSH |
436 | |
437 | int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
438 | int indent, ASN1_PCTX *pctx) |
439 | { | |
440 | if (pkey->ameth && pkey->ameth->priv_print) | |
441 | return pkey->ameth->priv_print(out, pkey, indent, pctx); | |
442 | ||
443 | return unsup_alg(out, pkey, indent, "Private Key"); | |
444 | } | |
35208f36 DSH |
445 | |
446 | int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
447 | int indent, ASN1_PCTX *pctx) |
448 | { | |
449 | if (pkey->ameth && pkey->ameth->param_print) | |
450 | return pkey->ameth->param_print(out, pkey, indent, pctx); | |
451 | return unsup_alg(out, pkey, indent, "Parameters"); | |
452 | } | |
03919683 DSH |
453 | |
454 | int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) | |
0f113f3e MC |
455 | { |
456 | if (!pkey->ameth || !pkey->ameth->pkey_ctrl) | |
457 | return -2; | |
458 | return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, | |
459 | 0, pnid); | |
460 | } |