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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 68static void EVP_PKEY_free_it(EVP_PKEY *x);
bb2297a4 69
6b691a5c 70int 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 107int 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 128int 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 153int 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);
194err:
195 return(0);
196 }
197
6b691a5c 198int 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 221int 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 237EVP_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 255int 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 267int 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 275RSA *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 287int 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 295DSA *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
308int 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
315ECDSA *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 330int 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 338DH *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 349int 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 371void 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 393static 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