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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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
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 :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
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. | |
52 | * | |
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> | |
d02b48c6 | 67 | |
d02b48c6 | 68 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
bb2297a4 | 69 | |
6b691a5c | 70 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
58964a49 | 71 | { |
4d94ae00 BM |
72 | if (0) |
73 | return 0; | |
cf1b7d96 | 74 | #ifndef OPENSSL_NO_RSA |
4d94ae00 | 75 | else if (pkey->type == EVP_PKEY_RSA) |
58964a49 | 76 | return(BN_num_bits(pkey->pkey.rsa->n)); |
58964a49 | 77 | #endif |
cf1b7d96 | 78 | #ifndef OPENSSL_NO_DSA |
4d94ae00 | 79 | else if (pkey->type == EVP_PKEY_DSA) |
58964a49 | 80 | return(BN_num_bits(pkey->pkey.dsa->p)); |
4d94ae00 BM |
81 | #endif |
82 | #ifndef OPENSSL_NO_ECDSA | |
83 | else if (pkey->type == EVP_PKEY_ECDSA) | |
84 | { | |
85 | BIGNUM *order = BN_new(); | |
86 | int ret; | |
87 | ||
88 | if (!order) | |
89 | { | |
90 | ERR_clear_error(); | |
91 | return 0; | |
92 | } | |
93 | if (!EC_GROUP_get_order(pkey->pkey.ecdsa->group, order, NULL)) | |
94 | { | |
95 | ERR_clear_error(); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | ret = BN_num_bits(order); | |
100 | BN_free(order); | |
101 | return ret; | |
102 | } | |
58964a49 RE |
103 | #endif |
104 | return(0); | |
105 | } | |
106 | ||
6b691a5c | 107 | int EVP_PKEY_size(EVP_PKEY *pkey) |
d02b48c6 | 108 | { |
92dad6cc BL |
109 | if (pkey == NULL) |
110 | return(0); | |
93d9121a | 111 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
112 | if (pkey->type == EVP_PKEY_RSA) |
113 | return(RSA_size(pkey->pkey.rsa)); | |
114 | else | |
115 | #endif | |
cf1b7d96 | 116 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
117 | if (pkey->type == EVP_PKEY_DSA) |
118 | return(DSA_size(pkey->pkey.dsa)); | |
119 | #endif | |
4d94ae00 BM |
120 | #ifndef OPENSSL_NO_ECDSA |
121 | if (pkey->type == EVP_PKEY_ECDSA) | |
122 | return(ECDSA_size(pkey->pkey.ecdsa)); | |
123 | #endif | |
124 | ||
d02b48c6 RE |
125 | return(0); |
126 | } | |
127 | ||
6b691a5c | 128 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
d02b48c6 | 129 | { |
cf1b7d96 | 130 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
131 | if (pkey->type == EVP_PKEY_DSA) |
132 | { | |
bc8a9f1f | 133 | int ret=pkey->save_parameters; |
d02b48c6 RE |
134 | |
135 | if (mode >= 0) | |
136 | pkey->save_parameters=mode; | |
137 | return(ret); | |
138 | } | |
4d94ae00 BM |
139 | #endif |
140 | #ifndef OPENSSL_NO_ECDSA | |
141 | if (pkey->type == EVP_PKEY_ECDSA) | |
142 | { | |
143 | int ret = pkey->save_parameters; | |
144 | ||
145 | if (mode >= 0) | |
146 | pkey->save_parameters = mode; | |
147 | return(ret); | |
148 | } | |
d02b48c6 RE |
149 | #endif |
150 | return(0); | |
151 | } | |
152 | ||
6b691a5c | 153 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, EVP_PKEY *from) |
d02b48c6 RE |
154 | { |
155 | if (to->type != from->type) | |
156 | { | |
157 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
58964a49 | 158 | goto err; |
d02b48c6 RE |
159 | } |
160 | ||
161 | if (EVP_PKEY_missing_parameters(from)) | |
162 | { | |
657e60fa | 163 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS); |
58964a49 | 164 | goto err; |
d02b48c6 | 165 | } |
cf1b7d96 | 166 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
167 | if (to->type == EVP_PKEY_DSA) |
168 | { | |
169 | BIGNUM *a; | |
170 | ||
171 | if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err; | |
172 | if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p); | |
173 | to->pkey.dsa->p=a; | |
174 | ||
175 | if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err; | |
176 | if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q); | |
177 | to->pkey.dsa->q=a; | |
178 | ||
179 | if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err; | |
180 | if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g); | |
181 | to->pkey.dsa->g=a; | |
182 | } | |
4d94ae00 BM |
183 | #endif |
184 | #ifndef OPENSSL_NO_ECDSA | |
185 | if (to->type == EVP_PKEY_ECDSA) | |
186 | { | |
187 | if (to->pkey.ecdsa->group != NULL) | |
188 | EC_GROUP_free(to->pkey.ecdsa->group); | |
189 | if ((to->pkey.ecdsa->group = EC_GROUP_new(EC_GROUP_method_of(from->pkey.ecdsa->group))) == NULL) goto err; | |
190 | if (!EC_GROUP_copy(to->pkey.ecdsa->group,from->pkey.ecdsa->group)) goto err; | |
191 | } | |
d02b48c6 RE |
192 | #endif |
193 | return(1); | |
194 | err: | |
195 | return(0); | |
196 | } | |
197 | ||
6b691a5c | 198 | int EVP_PKEY_missing_parameters(EVP_PKEY *pkey) |
d02b48c6 | 199 | { |
cf1b7d96 | 200 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
201 | if (pkey->type == EVP_PKEY_DSA) |
202 | { | |
203 | DSA *dsa; | |
204 | ||
205 | dsa=pkey->pkey.dsa; | |
206 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
207 | return(1); | |
208 | } | |
209 | #endif | |
4d94ae00 BM |
210 | #ifndef OPENSSL_NO_ECDSA |
211 | if (pkey->type == EVP_PKEY_ECDSA) | |
212 | { | |
213 | if (pkey->pkey.ecdsa->group == NULL) | |
214 | return(1); | |
215 | } | |
216 | #endif | |
217 | ||
d02b48c6 RE |
218 | return(0); |
219 | } | |
220 | ||
6b691a5c | 221 | int EVP_PKEY_cmp_parameters(EVP_PKEY *a, EVP_PKEY *b) |
58964a49 | 222 | { |
cf1b7d96 | 223 | #ifndef OPENSSL_NO_DSA |
58964a49 RE |
224 | if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA)) |
225 | { | |
226 | if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) || | |
227 | BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) || | |
228 | BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g)) | |
229 | return(0); | |
230 | else | |
231 | return(1); | |
232 | } | |
233 | #endif | |
234 | return(-1); | |
235 | } | |
236 | ||
6b691a5c | 237 | EVP_PKEY *EVP_PKEY_new(void) |
d02b48c6 RE |
238 | { |
239 | EVP_PKEY *ret; | |
240 | ||
26a3a48d | 241 | ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); |
d02b48c6 RE |
242 | if (ret == NULL) |
243 | { | |
244 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
245 | return(NULL); | |
246 | } | |
247 | ret->type=EVP_PKEY_NONE; | |
248 | ret->references=1; | |
249 | ret->pkey.ptr=NULL; | |
250 | ret->attributes=NULL; | |
251 | ret->save_parameters=1; | |
252 | return(ret); | |
253 | } | |
254 | ||
6b691a5c | 255 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key) |
d02b48c6 RE |
256 | { |
257 | if (pkey == NULL) return(0); | |
258 | if (pkey->pkey.ptr != NULL) | |
259 | EVP_PKEY_free_it(pkey); | |
260 | pkey->type=EVP_PKEY_type(type); | |
261 | pkey->save_type=type; | |
262 | pkey->pkey.ptr=key; | |
7f5b6f0f | 263 | return(key != NULL); |
d02b48c6 RE |
264 | } |
265 | ||
cf1b7d96 | 266 | #ifndef OPENSSL_NO_RSA |
c7cb16a8 | 267 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 268 | { |
6d3724d3 | 269 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
78435364 | 270 | if(ret) |
6ac4e8bd | 271 | RSA_up_ref(key); |
6d3724d3 | 272 | return ret; |
52664f50 DSH |
273 | } |
274 | ||
c7cb16a8 | 275 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) |
f769ce3e DSH |
276 | { |
277 | if(pkey->type != EVP_PKEY_RSA) { | |
c7cb16a8 | 278 | EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); |
f769ce3e DSH |
279 | return NULL; |
280 | } | |
6ac4e8bd | 281 | RSA_up_ref(pkey->pkey.rsa); |
f769ce3e DSH |
282 | return pkey->pkey.rsa; |
283 | } | |
284 | #endif | |
285 | ||
cf1b7d96 | 286 | #ifndef OPENSSL_NO_DSA |
c7cb16a8 | 287 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 288 | { |
6d3724d3 | 289 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
78435364 | 290 | if(ret) |
6ac4e8bd | 291 | DSA_up_ref(key); |
6d3724d3 | 292 | return ret; |
52664f50 DSH |
293 | } |
294 | ||
c7cb16a8 | 295 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) |
f769ce3e DSH |
296 | { |
297 | if(pkey->type != EVP_PKEY_DSA) { | |
c7cb16a8 | 298 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); |
f769ce3e DSH |
299 | return NULL; |
300 | } | |
6ac4e8bd | 301 | DSA_up_ref(pkey->pkey.dsa); |
f769ce3e DSH |
302 | return pkey->pkey.dsa; |
303 | } | |
304 | #endif | |
305 | ||
4d94ae00 BM |
306 | #ifndef OPENSSL_NO_ECDSA |
307 | ||
308 | int EVP_PKEY_set1_ECDSA(EVP_PKEY *pkey, ECDSA *key) | |
309 | { | |
310 | int ret = EVP_PKEY_assign_ECDSA(pkey,key); | |
311 | if (ret) CRYPTO_add(&key->references, 1,CRYPTO_LOCK_ECDSA); | |
312 | return ret; | |
313 | } | |
314 | ||
315 | ECDSA *EVP_PKEY_get1_ECDSA(EVP_PKEY *pkey) | |
316 | { | |
317 | if (pkey->type != EVP_PKEY_ECDSA) | |
318 | { | |
319 | EVPerr(EVP_F_EVP_PKEY_GET1_ECDSA, EVP_R_EXPECTING_A_ECDSA_KEY); | |
320 | return NULL; | |
321 | } | |
322 | CRYPTO_add(&pkey->pkey.ecdsa->references, 1, CRYPTO_LOCK_ECDSA); | |
323 | return pkey->pkey.ecdsa; | |
324 | } | |
325 | #endif | |
326 | ||
327 | ||
cf1b7d96 | 328 | #ifndef OPENSSL_NO_DH |
52664f50 | 329 | |
c7cb16a8 | 330 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 331 | { |
6d3724d3 | 332 | int ret = EVP_PKEY_assign_DH(pkey, key); |
78435364 | 333 | if(ret) |
e815d301 | 334 | DH_up_ref(key); |
6d3724d3 | 335 | return ret; |
52664f50 DSH |
336 | } |
337 | ||
c7cb16a8 | 338 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) |
f769ce3e DSH |
339 | { |
340 | if(pkey->type != EVP_PKEY_DH) { | |
c7cb16a8 | 341 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); |
f769ce3e DSH |
342 | return NULL; |
343 | } | |
e815d301 | 344 | DH_up_ref(pkey->pkey.dh); |
f769ce3e DSH |
345 | return pkey->pkey.dh; |
346 | } | |
347 | #endif | |
348 | ||
6b691a5c | 349 | int EVP_PKEY_type(int type) |
d02b48c6 RE |
350 | { |
351 | switch (type) | |
352 | { | |
353 | case EVP_PKEY_RSA: | |
354 | case EVP_PKEY_RSA2: | |
355 | return(EVP_PKEY_RSA); | |
356 | case EVP_PKEY_DSA: | |
58964a49 | 357 | case EVP_PKEY_DSA1: |
d02b48c6 RE |
358 | case EVP_PKEY_DSA2: |
359 | case EVP_PKEY_DSA3: | |
58964a49 | 360 | case EVP_PKEY_DSA4: |
d02b48c6 RE |
361 | return(EVP_PKEY_DSA); |
362 | case EVP_PKEY_DH: | |
363 | return(EVP_PKEY_DH); | |
4d94ae00 BM |
364 | case EVP_PKEY_ECDSA: |
365 | return(EVP_PKEY_ECDSA); | |
d02b48c6 RE |
366 | default: |
367 | return(NID_undef); | |
368 | } | |
369 | } | |
370 | ||
6b691a5c | 371 | void EVP_PKEY_free(EVP_PKEY *x) |
d02b48c6 RE |
372 | { |
373 | int i; | |
374 | ||
375 | if (x == NULL) return; | |
376 | ||
377 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
58964a49 RE |
378 | #ifdef REF_PRINT |
379 | REF_PRINT("EVP_PKEY",x); | |
380 | #endif | |
d02b48c6 RE |
381 | if (i > 0) return; |
382 | #ifdef REF_CHECK | |
383 | if (i < 0) | |
384 | { | |
385 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
386 | abort(); | |
387 | } | |
388 | #endif | |
389 | EVP_PKEY_free_it(x); | |
26a3a48d | 390 | OPENSSL_free(x); |
d02b48c6 RE |
391 | } |
392 | ||
6b691a5c | 393 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
d02b48c6 RE |
394 | { |
395 | switch (x->type) | |
396 | { | |
cf1b7d96 | 397 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
398 | case EVP_PKEY_RSA: |
399 | case EVP_PKEY_RSA2: | |
400 | RSA_free(x->pkey.rsa); | |
401 | break; | |
402 | #endif | |
cf1b7d96 | 403 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
404 | case EVP_PKEY_DSA: |
405 | case EVP_PKEY_DSA2: | |
406 | case EVP_PKEY_DSA3: | |
58964a49 | 407 | case EVP_PKEY_DSA4: |
d02b48c6 RE |
408 | DSA_free(x->pkey.dsa); |
409 | break; | |
410 | #endif | |
4d94ae00 BM |
411 | #ifndef OPENSSL_NO_ECDSA |
412 | case EVP_PKEY_ECDSA: | |
413 | ECDSA_free(x->pkey.ecdsa); | |
414 | break; | |
415 | #endif | |
cf1b7d96 | 416 | #ifndef OPENSSL_NO_DH |
d02b48c6 RE |
417 | case EVP_PKEY_DH: |
418 | DH_free(x->pkey.dh); | |
419 | break; | |
420 | #endif | |
421 | } | |
422 | } | |
423 |