Update build for OpenSSL-1.0.0a.
[dragonfly.git] / crypto / openssl / crypto / evp / p_lib.c
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56276539
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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>
5bd86ce5 67#ifndef OPENSSL_NO_RSA
56276539 68#include <openssl/rsa.h>
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69#endif
70#ifndef OPENSSL_NO_DSA
56276539 71#include <openssl/dsa.h>
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72#endif
73#ifndef OPENSSL_NO_DH
56276539 74#include <openssl/dh.h>
5bd86ce5 75#endif
56276539 76
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77#ifndef OPENSSL_NO_ENGINE
78#include <openssl/engine.h>
79#endif
80
01185282 81#include "../asn1/asn1_locl.h"
919b01cc 82
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83static void EVP_PKEY_free_it(EVP_PKEY *x);
84
85int EVP_PKEY_bits(EVP_PKEY *pkey)
86 {
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87 if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
88 return pkey->ameth->pkey_bits(pkey);
89 return 0;
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90 }
91
92int EVP_PKEY_size(EVP_PKEY *pkey)
93 {
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94 if (pkey && pkey->ameth && pkey->ameth->pkey_size)
95 return pkey->ameth->pkey_size(pkey);
96 return 0;
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97 }
98
99int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
100 {
101#ifndef OPENSSL_NO_DSA
102 if (pkey->type == EVP_PKEY_DSA)
103 {
104 int ret=pkey->save_parameters;
105
106 if (mode >= 0)
107 pkey->save_parameters=mode;
108 return(ret);
109 }
110#endif
111#ifndef OPENSSL_NO_EC
112 if (pkey->type == EVP_PKEY_EC)
113 {
114 int ret = pkey->save_parameters;
115
116 if (mode >= 0)
117 pkey->save_parameters = mode;
118 return(ret);
119 }
120#endif
121 return(0);
122 }
123
124int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
125 {
126 if (to->type != from->type)
127 {
128 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
129 goto err;
130 }
131
132 if (EVP_PKEY_missing_parameters(from))
133 {
134 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
135 goto err;
136 }
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137 if (from->ameth && from->ameth->param_copy)
138 return from->ameth->param_copy(to, from);
56276539 139err:
919b01cc 140 return 0;
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141 }
142
143int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
144 {
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145 if (pkey->ameth && pkey->ameth->param_missing)
146 return pkey->ameth->param_missing(pkey);
147 return 0;
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148 }
149
150int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
151 {
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152 if (a->type != b->type)
153 return -1;
154 if (a->ameth && a->ameth->param_cmp)
155 return a->ameth->param_cmp(a, b);
156 return -2;
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157 }
158
159int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
160 {
161 if (a->type != b->type)
162 return -1;
163
919b01cc 164 if (a->ameth)
56276539 165 {
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166 int ret;
167 /* Compare parameters if the algorithm has them */
168 if (a->ameth->param_cmp)
56276539 169 {
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170 ret = a->ameth->param_cmp(a, b);
171 if (ret <= 0)
172 return ret;
56276539 173 }
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174
175 if (a->ameth->pub_cmp)
176 return a->ameth->pub_cmp(a, b);
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177 }
178
919b01cc 179 return -2;
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180 }
181
182EVP_PKEY *EVP_PKEY_new(void)
183 {
184 EVP_PKEY *ret;
185
186 ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
187 if (ret == NULL)
188 {
189 EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
190 return(NULL);
191 }
192 ret->type=EVP_PKEY_NONE;
919b01cc 193 ret->save_type=EVP_PKEY_NONE;
56276539 194 ret->references=1;
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195 ret->ameth=NULL;
196 ret->engine=NULL;
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197 ret->pkey.ptr=NULL;
198 ret->attributes=NULL;
199 ret->save_parameters=1;
200 return(ret);
201 }
202
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203/* Setup a public key ASN1 method and ENGINE from a NID or a string.
204 * If pkey is NULL just return 1 or 0 if the algorithm exists.
205 */
206
207static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
56276539 208 {
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209 const EVP_PKEY_ASN1_METHOD *ameth;
210 ENGINE *e = NULL;
211 if (pkey)
212 {
213 if (pkey->pkey.ptr)
214 EVP_PKEY_free_it(pkey);
215 /* If key type matches and a method exists then this
216 * lookup has succeeded once so just indicate success.
217 */
218 if ((type == pkey->save_type) && pkey->ameth)
219 return 1;
220#ifndef OPENSSL_NO_ENGINE
221 /* If we have an ENGINE release it */
222 if (pkey->engine)
223 {
224 ENGINE_finish(pkey->engine);
225 pkey->engine = NULL;
226 }
227#endif
228 }
229 if (str)
230 ameth = EVP_PKEY_asn1_find_str(&e, str, len);
231 else
232 ameth = EVP_PKEY_asn1_find(&e, type);
233#ifndef OPENSSL_NO_ENGINE
234 if (!pkey && e)
235 ENGINE_finish(e);
236#endif
237 if (!ameth)
238 {
239 EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
240 return 0;
241 }
242 if (pkey)
243 {
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 }
252
253int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
254 {
255 return pkey_set_type(pkey, type, NULL, -1);
256 }
257
258int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
259 {
260 return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
261 }
262
263int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
264 {
265 if (!EVP_PKEY_set_type(pkey, type))
266 return 0;
56276539 267 pkey->pkey.ptr=key;
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268 return (key != NULL);
269 }
270
271void *EVP_PKEY_get0(EVP_PKEY *pkey)
272 {
273 return pkey->pkey.ptr;
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274 }
275
276#ifndef OPENSSL_NO_RSA
277int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
278{
279 int ret = EVP_PKEY_assign_RSA(pkey, key);
280 if(ret)
281 RSA_up_ref(key);
282 return ret;
283}
284
285RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
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;
293}
294#endif
295
296#ifndef OPENSSL_NO_DSA
297int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
298{
299 int ret = EVP_PKEY_assign_DSA(pkey, key);
300 if(ret)
301 DSA_up_ref(key);
302 return ret;
303}
304
305DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
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;
313}
314#endif
315
316#ifndef OPENSSL_NO_EC
317
318int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
319{
320 int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
321 if (ret)
322 EC_KEY_up_ref(key);
323 return ret;
324}
325
326EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
327{
328 if (pkey->type != EVP_PKEY_EC)
329 {
330 EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
331 return NULL;
332 }
333 EC_KEY_up_ref(pkey->pkey.ec);
334 return pkey->pkey.ec;
335}
336#endif
337
338
339#ifndef OPENSSL_NO_DH
340
341int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
342{
343 int ret = EVP_PKEY_assign_DH(pkey, key);
344 if(ret)
345 DH_up_ref(key);
346 return ret;
347}
348
349DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
350 {
351 if(pkey->type != EVP_PKEY_DH) {
352 EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
353 return NULL;
354 }
355 DH_up_ref(pkey->pkey.dh);
356 return pkey->pkey.dh;
357}
358#endif
359
360int EVP_PKEY_type(int type)
361 {
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362 int ret;
363 const EVP_PKEY_ASN1_METHOD *ameth;
364 ENGINE *e;
365 ameth = EVP_PKEY_asn1_find(&e, type);
366 if (ameth)
367 ret = ameth->pkey_id;
368 else
369 ret = NID_undef;
370#ifndef OPENSSL_NO_ENGINE
371 if (e)
372 ENGINE_finish(e);
373#endif
374 return ret;
375 }
376
377int EVP_PKEY_id(const EVP_PKEY *pkey)
378 {
379 return pkey->type;
380 }
381
382int EVP_PKEY_base_id(const EVP_PKEY *pkey)
383 {
384 return EVP_PKEY_type(pkey->type);
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385 }
386
387void EVP_PKEY_free(EVP_PKEY *x)
388 {
389 int i;
390
391 if (x == NULL) return;
392
393 i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
394#ifdef REF_PRINT
395 REF_PRINT("EVP_PKEY",x);
396#endif
397 if (i > 0) return;
398#ifdef REF_CHECK
399 if (i < 0)
400 {
401 fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
402 abort();
403 }
404#endif
405 EVP_PKEY_free_it(x);
406 if (x->attributes)
407 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
408 OPENSSL_free(x);
409 }
410
411static void EVP_PKEY_free_it(EVP_PKEY *x)
412 {
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413 if (x->ameth && x->ameth->pkey_free)
414 x->ameth->pkey_free(x);
415#ifndef OPENSSL_NO_ENGINE
416 if (x->engine)
56276539 417 {
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418 ENGINE_finish(x->engine);
419 x->engine = NULL;
56276539 420 }
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421#endif
422 }
423
424static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
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 }
432
433int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
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 }
441
442int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
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 }
450
451int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
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 }
458
459int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
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);
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465 }
466