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1 | /* crypto/evp/p_lib.c */ | |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
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" | |
61 | #include <openssl/bn.h> | |
62 | #include <openssl/err.h> | |
63 | #include <openssl/objects.h> | |
64 | #include <openssl/evp.h> | |
65 | #include <openssl/asn1_mac.h> | |
66 | #include <openssl/x509.h> | |
67 | ||
68 | static void EVP_PKEY_free_it(EVP_PKEY *x); | |
69 | ||
70 | int EVP_PKEY_bits(EVP_PKEY *pkey) | |
71 | { | |
72 | if (0) | |
73 | return 0; | |
74 | #ifndef OPENSSL_NO_RSA | |
75 | else if (pkey->type == EVP_PKEY_RSA) | |
76 | return(BN_num_bits(pkey->pkey.rsa->n)); | |
77 | #endif | |
78 | #ifndef OPENSSL_NO_DSA | |
79 | else if (pkey->type == EVP_PKEY_DSA) | |
80 | return(BN_num_bits(pkey->pkey.dsa->p)); | |
81 | #endif | |
82 | #ifndef OPENSSL_NO_EC | |
83 | else if (pkey->type == EVP_PKEY_EC) | |
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.eckey->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 | } | |
103 | #endif | |
104 | return(0); | |
105 | } | |
106 | ||
107 | int EVP_PKEY_size(EVP_PKEY *pkey) | |
108 | { | |
109 | if (pkey == NULL) | |
110 | return(0); | |
111 | #ifndef OPENSSL_NO_RSA | |
112 | if (pkey->type == EVP_PKEY_RSA) | |
113 | return(RSA_size(pkey->pkey.rsa)); | |
114 | else | |
115 | #endif | |
116 | #ifndef OPENSSL_NO_DSA | |
117 | if (pkey->type == EVP_PKEY_DSA) | |
118 | return(DSA_size(pkey->pkey.dsa)); | |
119 | #endif | |
120 | #ifndef OPENSSL_NO_ECDSA | |
121 | if (pkey->type == EVP_PKEY_EC) | |
122 | return(ECDSA_size(pkey->pkey.eckey)); | |
123 | #endif | |
124 | ||
125 | return(0); | |
126 | } | |
127 | ||
128 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) | |
129 | { | |
130 | #ifndef OPENSSL_NO_DSA | |
131 | if (pkey->type == EVP_PKEY_DSA) | |
132 | { | |
133 | int ret=pkey->save_parameters; | |
134 | ||
135 | if (mode >= 0) | |
136 | pkey->save_parameters=mode; | |
137 | return(ret); | |
138 | } | |
139 | #endif | |
140 | #ifndef OPENSSL_NO_EC | |
141 | if (pkey->type == EVP_PKEY_EC) | |
142 | { | |
143 | int ret = pkey->save_parameters; | |
144 | ||
145 | if (mode >= 0) | |
146 | pkey->save_parameters = mode; | |
147 | return(ret); | |
148 | } | |
149 | #endif | |
150 | return(0); | |
151 | } | |
152 | ||
153 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, cpnst EVP_PKEY *from) | |
154 | { | |
155 | if (to->type != from->type) | |
156 | { | |
157 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
158 | goto err; | |
159 | } | |
160 | ||
161 | if (EVP_PKEY_missing_parameters(from)) | |
162 | { | |
163 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS); | |
164 | goto err; | |
165 | } | |
166 | #ifndef OPENSSL_NO_DSA | |
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 | } | |
183 | #endif | |
184 | #ifndef OPENSSL_NO_EC | |
185 | if (to->type == EVP_PKEY_EC) | |
186 | { | |
187 | if (to->pkey.eckey->group != NULL) | |
188 | EC_GROUP_free(to->pkey.eckey->group); | |
189 | if ((to->pkey.eckey->group = EC_GROUP_new( | |
190 | EC_GROUP_method_of(from->pkey.eckey->group))) == NULL) | |
191 | goto err; | |
192 | if (!EC_GROUP_copy(to->pkey.eckey->group, | |
193 | from->pkey.eckey->group)) goto err; | |
194 | } | |
195 | #endif | |
196 | return(1); | |
197 | err: | |
198 | return(0); | |
199 | } | |
200 | ||
201 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) | |
202 | { | |
203 | #ifndef OPENSSL_NO_DSA | |
204 | if (pkey->type == EVP_PKEY_DSA) | |
205 | { | |
206 | DSA *dsa; | |
207 | ||
208 | dsa=pkey->pkey.dsa; | |
209 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
210 | return(1); | |
211 | } | |
212 | #endif | |
213 | #ifndef OPENSSL_NO_EC | |
214 | if (pkey->type == EVP_PKEY_EC) | |
215 | { | |
216 | if (pkey->pkey.eckey->group == NULL) | |
217 | return(1); | |
218 | } | |
219 | #endif | |
220 | ||
221 | return(0); | |
222 | } | |
223 | ||
224 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) | |
225 | { | |
226 | #ifndef OPENSSL_NO_DSA | |
227 | if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA)) | |
228 | { | |
229 | if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) || | |
230 | BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) || | |
231 | BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g)) | |
232 | return(0); | |
233 | else | |
234 | return(1); | |
235 | } | |
236 | #endif | |
237 | return(-1); | |
238 | } | |
239 | ||
240 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) | |
241 | { | |
242 | if (a->type != b->type) | |
243 | return -1; | |
244 | ||
245 | switch (a->type) | |
246 | { | |
247 | #ifndef OPENSSL_NO_RSA | |
248 | case EVP_PKEY_RSA: | |
249 | if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0 | |
250 | || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0) | |
251 | return 0; | |
252 | break; | |
253 | #endif | |
254 | #ifndef OPENSSL_NO_DSA | |
255 | case EVP_PKEY_DSA: | |
256 | if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0) | |
257 | return 0; | |
258 | break; | |
259 | #endif | |
260 | #ifndef OPENSSL_NO_EC | |
261 | case EVP_PKEY_EC: | |
262 | { | |
263 | int r = EC_POINT_cmp(b->pkey.eckey->group, | |
264 | b->pkey.eckey->pub_key,a->pkey.eckey->pub_key,NULL); | |
265 | if (r != 0) | |
266 | { | |
267 | if (r == 1) | |
268 | return 0; | |
269 | else | |
270 | return -2; | |
271 | } | |
272 | } | |
273 | break; | |
274 | #endif | |
275 | #ifndef OPENSSL_NO_DH | |
276 | case EVP_PKEY_DH: | |
277 | return -2; | |
278 | #endif | |
279 | default: | |
280 | return -2; | |
281 | } | |
282 | ||
283 | return 1; | |
284 | } | |
285 | ||
286 | EVP_PKEY *EVP_PKEY_new(void) | |
287 | { | |
288 | EVP_PKEY *ret; | |
289 | ||
290 | ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); | |
291 | if (ret == NULL) | |
292 | { | |
293 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
294 | return(NULL); | |
295 | } | |
296 | ret->type=EVP_PKEY_NONE; | |
297 | ret->references=1; | |
298 | ret->pkey.ptr=NULL; | |
299 | ret->attributes=NULL; | |
300 | ret->save_parameters=1; | |
301 | return(ret); | |
302 | } | |
303 | ||
304 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key) | |
305 | { | |
306 | if (pkey == NULL) return(0); | |
307 | if (pkey->pkey.ptr != NULL) | |
308 | EVP_PKEY_free_it(pkey); | |
309 | pkey->type=EVP_PKEY_type(type); | |
310 | pkey->save_type=type; | |
311 | pkey->pkey.ptr=key; | |
312 | return(key != NULL); | |
313 | } | |
314 | ||
315 | #ifndef OPENSSL_NO_RSA | |
316 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) | |
317 | { | |
318 | int ret = EVP_PKEY_assign_RSA(pkey, key); | |
319 | if(ret) | |
320 | RSA_up_ref(key); | |
321 | return ret; | |
322 | } | |
323 | ||
324 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) | |
325 | { | |
326 | if(pkey->type != EVP_PKEY_RSA) { | |
327 | EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); | |
328 | return NULL; | |
329 | } | |
330 | RSA_up_ref(pkey->pkey.rsa); | |
331 | return pkey->pkey.rsa; | |
332 | } | |
333 | #endif | |
334 | ||
335 | #ifndef OPENSSL_NO_DSA | |
336 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) | |
337 | { | |
338 | int ret = EVP_PKEY_assign_DSA(pkey, key); | |
339 | if(ret) | |
340 | DSA_up_ref(key); | |
341 | return ret; | |
342 | } | |
343 | ||
344 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) | |
345 | { | |
346 | if(pkey->type != EVP_PKEY_DSA) { | |
347 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); | |
348 | return NULL; | |
349 | } | |
350 | DSA_up_ref(pkey->pkey.dsa); | |
351 | return pkey->pkey.dsa; | |
352 | } | |
353 | #endif | |
354 | ||
355 | #ifndef OPENSSL_NO_EC | |
356 | ||
357 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) | |
358 | { | |
359 | int ret = EVP_PKEY_assign_EC_KEY(pkey,key); | |
360 | if (ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_EC); | |
361 | return ret; | |
362 | } | |
363 | ||
364 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) | |
365 | { | |
366 | if (pkey->type != EVP_PKEY_EC) | |
367 | { | |
368 | EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); | |
369 | return NULL; | |
370 | } | |
371 | CRYPTO_add(&pkey->pkey.eckey->references, 1, CRYPTO_LOCK_EC); | |
372 | return pkey->pkey.eckey; | |
373 | } | |
374 | #endif | |
375 | ||
376 | ||
377 | #ifndef OPENSSL_NO_DH | |
378 | ||
379 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) | |
380 | { | |
381 | int ret = EVP_PKEY_assign_DH(pkey, key); | |
382 | if(ret) | |
383 | DH_up_ref(key); | |
384 | return ret; | |
385 | } | |
386 | ||
387 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) | |
388 | { | |
389 | if(pkey->type != EVP_PKEY_DH) { | |
390 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); | |
391 | return NULL; | |
392 | } | |
393 | DH_up_ref(pkey->pkey.dh); | |
394 | return pkey->pkey.dh; | |
395 | } | |
396 | #endif | |
397 | ||
398 | int EVP_PKEY_type(int type) | |
399 | { | |
400 | switch (type) | |
401 | { | |
402 | case EVP_PKEY_RSA: | |
403 | case EVP_PKEY_RSA2: | |
404 | return(EVP_PKEY_RSA); | |
405 | case EVP_PKEY_DSA: | |
406 | case EVP_PKEY_DSA1: | |
407 | case EVP_PKEY_DSA2: | |
408 | case EVP_PKEY_DSA3: | |
409 | case EVP_PKEY_DSA4: | |
410 | return(EVP_PKEY_DSA); | |
411 | case EVP_PKEY_DH: | |
412 | return(EVP_PKEY_DH); | |
413 | case EVP_PKEY_EC: | |
414 | return(EVP_PKEY_EC); | |
415 | default: | |
416 | return(NID_undef); | |
417 | } | |
418 | } | |
419 | ||
420 | void EVP_PKEY_free(EVP_PKEY *x) | |
421 | { | |
422 | int i; | |
423 | ||
424 | if (x == NULL) return; | |
425 | ||
426 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
427 | #ifdef REF_PRINT | |
428 | REF_PRINT("EVP_PKEY",x); | |
429 | #endif | |
430 | if (i > 0) return; | |
431 | #ifdef REF_CHECK | |
432 | if (i < 0) | |
433 | { | |
434 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
435 | abort(); | |
436 | } | |
437 | #endif | |
438 | EVP_PKEY_free_it(x); | |
439 | OPENSSL_free(x); | |
440 | } | |
441 | ||
442 | static void EVP_PKEY_free_it(EVP_PKEY *x) | |
443 | { | |
444 | switch (x->type) | |
445 | { | |
446 | #ifndef OPENSSL_NO_RSA | |
447 | case EVP_PKEY_RSA: | |
448 | case EVP_PKEY_RSA2: | |
449 | RSA_free(x->pkey.rsa); | |
450 | break; | |
451 | #endif | |
452 | #ifndef OPENSSL_NO_DSA | |
453 | case EVP_PKEY_DSA: | |
454 | case EVP_PKEY_DSA2: | |
455 | case EVP_PKEY_DSA3: | |
456 | case EVP_PKEY_DSA4: | |
457 | DSA_free(x->pkey.dsa); | |
458 | break; | |
459 | #endif | |
460 | #ifndef OPENSSL_NO_EC | |
461 | case EVP_PKEY_EC: | |
462 | EC_KEY_free(x->pkey.eckey); | |
463 | break; | |
464 | #endif | |
465 | #ifndef OPENSSL_NO_DH | |
466 | case EVP_PKEY_DH: | |
467 | DH_free(x->pkey.dh); | |
468 | break; | |
469 | #endif | |
470 | } | |
471 | } | |
472 |