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d02b48c6 | 1 | /* crypto/evp/p_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 8 | * |
d02b48c6 RE |
9 | * This library is free for commercial and non-commercial use as long as |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 15 | * |
d02b48c6 RE |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
0f113f3e | 52 | * |
d02b48c6 RE |
53 | * The licence and distribution terms for any publically available version or |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
4d94ae00 BM |
61 | #include <openssl/bn.h> |
62 | #include <openssl/err.h> | |
ec577822 BM |
63 | #include <openssl/objects.h> |
64 | #include <openssl/evp.h> | |
65 | #include <openssl/asn1_mac.h> | |
66 | #include <openssl/x509.h> | |
3eeaab4b | 67 | #ifndef OPENSSL_NO_RSA |
0f113f3e | 68 | # include <openssl/rsa.h> |
3eeaab4b NL |
69 | #endif |
70 | #ifndef OPENSSL_NO_DSA | |
0f113f3e | 71 | # include <openssl/dsa.h> |
3eeaab4b NL |
72 | #endif |
73 | #ifndef OPENSSL_NO_DH | |
0f113f3e | 74 | # include <openssl/dh.h> |
3eeaab4b | 75 | #endif |
d02b48c6 | 76 | |
01b8b3c7 | 77 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 78 | # include <openssl/engine.h> |
01b8b3c7 DSH |
79 | #endif |
80 | ||
5fe736e5 | 81 | #include "internal/asn1_int.h" |
18e377b4 | 82 | |
d02b48c6 | 83 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
bb2297a4 | 84 | |
6b691a5c | 85 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
0f113f3e MC |
86 | { |
87 | if (pkey && pkey->ameth && pkey->ameth->pkey_bits) | |
88 | return pkey->ameth->pkey_bits(pkey); | |
89 | return 0; | |
90 | } | |
58964a49 | 91 | |
2514fa79 | 92 | int EVP_PKEY_security_bits(const EVP_PKEY *pkey) |
0f113f3e MC |
93 | { |
94 | if (pkey == NULL) | |
95 | return 0; | |
96 | if (!pkey->ameth || !pkey->ameth->pkey_security_bits) | |
97 | return -2; | |
98 | return pkey->ameth->pkey_security_bits(pkey); | |
99 | } | |
2514fa79 | 100 | |
6b691a5c | 101 | int EVP_PKEY_size(EVP_PKEY *pkey) |
0f113f3e MC |
102 | { |
103 | if (pkey && pkey->ameth && pkey->ameth->pkey_size) | |
104 | return pkey->ameth->pkey_size(pkey); | |
105 | return 0; | |
106 | } | |
d02b48c6 | 107 | |
6b691a5c | 108 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
0f113f3e | 109 | { |
cf1b7d96 | 110 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
111 | if (pkey->type == EVP_PKEY_DSA) { |
112 | int ret = pkey->save_parameters; | |
113 | ||
114 | if (mode >= 0) | |
115 | pkey->save_parameters = mode; | |
116 | return (ret); | |
117 | } | |
4d94ae00 | 118 | #endif |
5488bb61 | 119 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
120 | if (pkey->type == EVP_PKEY_EC) { |
121 | int ret = pkey->save_parameters; | |
122 | ||
123 | if (mode >= 0) | |
124 | pkey->save_parameters = mode; | |
125 | return (ret); | |
126 | } | |
d02b48c6 | 127 | #endif |
0f113f3e MC |
128 | return (0); |
129 | } | |
d02b48c6 | 130 | |
a8b72844 | 131 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
0f113f3e MC |
132 | { |
133 | if (to->type != from->type) { | |
134 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES); | |
135 | goto err; | |
136 | } | |
137 | ||
138 | if (EVP_PKEY_missing_parameters(from)) { | |
139 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS); | |
140 | goto err; | |
141 | } | |
142 | if (from->ameth && from->ameth->param_copy) | |
143 | return from->ameth->param_copy(to, from); | |
144 | err: | |
145 | return 0; | |
146 | } | |
d02b48c6 | 147 | |
af0f0f3e | 148 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) |
0f113f3e MC |
149 | { |
150 | if (pkey->ameth && pkey->ameth->param_missing) | |
151 | return pkey->ameth->param_missing(pkey); | |
152 | return 0; | |
153 | } | |
d02b48c6 | 154 | |
af0f0f3e | 155 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
156 | { |
157 | if (a->type != b->type) | |
158 | return -1; | |
159 | if (a->ameth && a->ameth->param_cmp) | |
160 | return a->ameth->param_cmp(a, b); | |
161 | return -2; | |
162 | } | |
58964a49 | 163 | |
af0f0f3e | 164 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
165 | { |
166 | if (a->type != b->type) | |
167 | return -1; | |
168 | ||
169 | if (a->ameth) { | |
170 | int ret; | |
171 | /* Compare parameters if the algorithm has them */ | |
172 | if (a->ameth->param_cmp) { | |
173 | ret = a->ameth->param_cmp(a, b); | |
174 | if (ret <= 0) | |
175 | return ret; | |
176 | } | |
177 | ||
178 | if (a->ameth->pub_cmp) | |
179 | return a->ameth->pub_cmp(a, b); | |
180 | } | |
181 | ||
182 | return -2; | |
183 | } | |
e6526fbf | 184 | |
6b691a5c | 185 | EVP_PKEY *EVP_PKEY_new(void) |
0f113f3e MC |
186 | { |
187 | EVP_PKEY *ret; | |
188 | ||
189 | ret = (EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); | |
190 | if (ret == NULL) { | |
191 | EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); | |
192 | return (NULL); | |
193 | } | |
194 | ret->type = EVP_PKEY_NONE; | |
195 | ret->save_type = EVP_PKEY_NONE; | |
196 | ret->references = 1; | |
197 | ret->ameth = NULL; | |
198 | ret->engine = NULL; | |
199 | ret->pkey.ptr = NULL; | |
200 | ret->attributes = NULL; | |
201 | ret->save_parameters = 1; | |
202 | return (ret); | |
203 | } | |
204 | ||
205 | /* | |
206 | * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey | |
207 | * is NULL just return 1 or 0 if the algorithm exists. | |
01b8b3c7 DSH |
208 | */ |
209 | ||
210 | static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len) | |
0f113f3e MC |
211 | { |
212 | const EVP_PKEY_ASN1_METHOD *ameth; | |
213 | ENGINE *e = NULL; | |
214 | if (pkey) { | |
215 | if (pkey->pkey.ptr) | |
216 | EVP_PKEY_free_it(pkey); | |
217 | /* | |
218 | * If key type matches and a method exists then this lookup has | |
219 | * succeeded once so just indicate success. | |
220 | */ | |
221 | if ((type == pkey->save_type) && pkey->ameth) | |
222 | return 1; | |
01b8b3c7 | 223 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
224 | /* If we have an ENGINE release it */ |
225 | if (pkey->engine) { | |
226 | ENGINE_finish(pkey->engine); | |
227 | pkey->engine = NULL; | |
228 | } | |
01b8b3c7 | 229 | #endif |
0f113f3e MC |
230 | } |
231 | if (str) | |
232 | ameth = EVP_PKEY_asn1_find_str(&e, str, len); | |
233 | else | |
234 | ameth = EVP_PKEY_asn1_find(&e, type); | |
01b8b3c7 | 235 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
236 | if (!pkey && e) |
237 | ENGINE_finish(e); | |
01b8b3c7 | 238 | #endif |
0f113f3e MC |
239 | if (!ameth) { |
240 | EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); | |
241 | return 0; | |
242 | } | |
243 | if (pkey) { | |
244 | pkey->ameth = ameth; | |
245 | pkey->engine = e; | |
246 | ||
247 | pkey->type = pkey->ameth->pkey_id; | |
248 | pkey->save_type = type; | |
249 | } | |
250 | return 1; | |
251 | } | |
01b8b3c7 DSH |
252 | |
253 | int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) | |
0f113f3e MC |
254 | { |
255 | return pkey_set_type(pkey, type, NULL, -1); | |
256 | } | |
01b8b3c7 DSH |
257 | |
258 | int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len) | |
0f113f3e MC |
259 | { |
260 | return pkey_set_type(pkey, EVP_PKEY_NONE, str, len); | |
261 | } | |
01b8b3c7 DSH |
262 | |
263 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) | |
0f113f3e MC |
264 | { |
265 | if (!EVP_PKEY_set_type(pkey, type)) | |
266 | return 0; | |
267 | pkey->pkey.ptr = key; | |
268 | return (key != NULL); | |
269 | } | |
d02b48c6 | 270 | |
db98bbc1 | 271 | void *EVP_PKEY_get0(EVP_PKEY *pkey) |
0f113f3e MC |
272 | { |
273 | return pkey->pkey.ptr; | |
274 | } | |
db98bbc1 | 275 | |
cf1b7d96 | 276 | #ifndef OPENSSL_NO_RSA |
c7cb16a8 | 277 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 278 | { |
0f113f3e MC |
279 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
280 | if (ret) | |
281 | RSA_up_ref(key); | |
282 | return ret; | |
52664f50 DSH |
283 | } |
284 | ||
c7cb16a8 | 285 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) |
0f113f3e MC |
286 | { |
287 | if (pkey->type != EVP_PKEY_RSA) { | |
288 | EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); | |
289 | return NULL; | |
290 | } | |
291 | RSA_up_ref(pkey->pkey.rsa); | |
292 | return pkey->pkey.rsa; | |
f769ce3e DSH |
293 | } |
294 | #endif | |
295 | ||
cf1b7d96 | 296 | #ifndef OPENSSL_NO_DSA |
c7cb16a8 | 297 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 298 | { |
0f113f3e MC |
299 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
300 | if (ret) | |
301 | DSA_up_ref(key); | |
302 | return ret; | |
52664f50 DSH |
303 | } |
304 | ||
c7cb16a8 | 305 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) |
0f113f3e MC |
306 | { |
307 | if (pkey->type != EVP_PKEY_DSA) { | |
308 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); | |
309 | return NULL; | |
310 | } | |
311 | DSA_up_ref(pkey->pkey.dsa); | |
312 | return pkey->pkey.dsa; | |
f769ce3e DSH |
313 | } |
314 | #endif | |
315 | ||
14a7cfb3 | 316 | #ifndef OPENSSL_NO_EC |
4d94ae00 | 317 | |
14a7cfb3 | 318 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) |
4d94ae00 | 319 | { |
0f113f3e MC |
320 | int ret = EVP_PKEY_assign_EC_KEY(pkey, key); |
321 | if (ret) | |
322 | EC_KEY_up_ref(key); | |
323 | return ret; | |
4d94ae00 BM |
324 | } |
325 | ||
14a7cfb3 | 326 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) |
4d94ae00 | 327 | { |
0f113f3e MC |
328 | if (pkey->type != EVP_PKEY_EC) { |
329 | EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); | |
330 | return NULL; | |
331 | } | |
332 | EC_KEY_up_ref(pkey->pkey.ec); | |
333 | return pkey->pkey.ec; | |
4d94ae00 BM |
334 | } |
335 | #endif | |
336 | ||
cf1b7d96 | 337 | #ifndef OPENSSL_NO_DH |
52664f50 | 338 | |
c7cb16a8 | 339 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 340 | { |
0f113f3e MC |
341 | int ret = EVP_PKEY_assign_DH(pkey, key); |
342 | if (ret) | |
343 | DH_up_ref(key); | |
344 | return ret; | |
52664f50 DSH |
345 | } |
346 | ||
c7cb16a8 | 347 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) |
0f113f3e MC |
348 | { |
349 | if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) { | |
350 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); | |
351 | return NULL; | |
352 | } | |
353 | DH_up_ref(pkey->pkey.dh); | |
354 | return pkey->pkey.dh; | |
f769ce3e DSH |
355 | } |
356 | #endif | |
357 | ||
6b691a5c | 358 | int EVP_PKEY_type(int type) |
0f113f3e MC |
359 | { |
360 | int ret; | |
361 | const EVP_PKEY_ASN1_METHOD *ameth; | |
362 | ENGINE *e; | |
363 | ameth = EVP_PKEY_asn1_find(&e, type); | |
364 | if (ameth) | |
365 | ret = ameth->pkey_id; | |
366 | else | |
367 | ret = NID_undef; | |
01b8b3c7 | 368 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
369 | if (e) |
370 | ENGINE_finish(e); | |
01b8b3c7 | 371 | #endif |
0f113f3e MC |
372 | return ret; |
373 | } | |
d02b48c6 | 374 | |
7f57b076 | 375 | int EVP_PKEY_id(const EVP_PKEY *pkey) |
0f113f3e MC |
376 | { |
377 | return pkey->type; | |
378 | } | |
7f57b076 DSH |
379 | |
380 | int EVP_PKEY_base_id(const EVP_PKEY *pkey) | |
0f113f3e MC |
381 | { |
382 | return EVP_PKEY_type(pkey->type); | |
383 | } | |
7f57b076 | 384 | |
6b691a5c | 385 | void EVP_PKEY_free(EVP_PKEY *x) |
0f113f3e MC |
386 | { |
387 | int i; | |
d02b48c6 | 388 | |
0f113f3e MC |
389 | if (x == NULL) |
390 | return; | |
d02b48c6 | 391 | |
0f113f3e | 392 | i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_EVP_PKEY); |
58964a49 | 393 | #ifdef REF_PRINT |
0f113f3e | 394 | REF_PRINT("EVP_PKEY", x); |
58964a49 | 395 | #endif |
0f113f3e MC |
396 | if (i > 0) |
397 | return; | |
d02b48c6 | 398 | #ifdef REF_CHECK |
0f113f3e MC |
399 | if (i < 0) { |
400 | fprintf(stderr, "EVP_PKEY_free, bad reference count\n"); | |
401 | abort(); | |
402 | } | |
d02b48c6 | 403 | #endif |
0f113f3e MC |
404 | EVP_PKEY_free_it(x); |
405 | if (x->attributes) | |
406 | sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); | |
407 | OPENSSL_free(x); | |
408 | } | |
d02b48c6 | 409 | |
6b691a5c | 410 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
0f113f3e MC |
411 | { |
412 | if (x->ameth && x->ameth->pkey_free) { | |
413 | x->ameth->pkey_free(x); | |
414 | x->pkey.ptr = NULL; | |
415 | } | |
01b8b3c7 | 416 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
417 | if (x->engine) { |
418 | ENGINE_finish(x->engine); | |
419 | x->engine = NULL; | |
420 | } | |
01b8b3c7 | 421 | #endif |
0f113f3e | 422 | } |
d02b48c6 | 423 | |
35208f36 | 424 | static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, |
0f113f3e MC |
425 | const char *kstr) |
426 | { | |
427 | BIO_indent(out, indent, 128); | |
428 | BIO_printf(out, "%s algorithm \"%s\" unsupported\n", | |
429 | kstr, OBJ_nid2ln(pkey->type)); | |
430 | return 1; | |
431 | } | |
35208f36 DSH |
432 | |
433 | int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
434 | int indent, ASN1_PCTX *pctx) |
435 | { | |
436 | if (pkey->ameth && pkey->ameth->pub_print) | |
437 | return pkey->ameth->pub_print(out, pkey, indent, pctx); | |
438 | ||
439 | return unsup_alg(out, pkey, indent, "Public Key"); | |
440 | } | |
35208f36 DSH |
441 | |
442 | int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
443 | int indent, ASN1_PCTX *pctx) |
444 | { | |
445 | if (pkey->ameth && pkey->ameth->priv_print) | |
446 | return pkey->ameth->priv_print(out, pkey, indent, pctx); | |
447 | ||
448 | return unsup_alg(out, pkey, indent, "Private Key"); | |
449 | } | |
35208f36 DSH |
450 | |
451 | int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, | |
0f113f3e MC |
452 | int indent, ASN1_PCTX *pctx) |
453 | { | |
454 | if (pkey->ameth && pkey->ameth->param_print) | |
455 | return pkey->ameth->param_print(out, pkey, indent, pctx); | |
456 | return unsup_alg(out, pkey, indent, "Parameters"); | |
457 | } | |
03919683 DSH |
458 | |
459 | int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) | |
0f113f3e MC |
460 | { |
461 | if (!pkey->ameth || !pkey->ameth->pkey_ctrl) | |
462 | return -2; | |
463 | return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, | |
464 | 0, pnid); | |
465 | } |