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diff --git a/src/lib/libcrypto/evp/p_lib.c b/src/lib/libcrypto/evp/p_lib.c
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1/* $OpenBSD: p_lib.c,v 1.16 2014/07/12 22:26:01 miod Exp $ */
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
61#include <openssl/opensslconf.h>
62
63#include <openssl/bn.h>
64#include <openssl/err.h>
65#include <openssl/evp.h>
66#include <openssl/objects.h>
67#include <openssl/x509.h>
68
69#ifndef OPENSSL_NO_DH
70#include <openssl/dh.h>
71#endif
72#ifndef OPENSSL_NO_DSA
73#include <openssl/dsa.h>
74#endif
75#ifndef OPENSSL_NO_RSA
76#include <openssl/rsa.h>
77#endif
78
79#ifndef OPENSSL_NO_ENGINE
80#include <openssl/engine.h>
81#endif
82
83#include "asn1_locl.h"
84
85static void EVP_PKEY_free_it(EVP_PKEY *x);
86
87int
88EVP_PKEY_bits(EVP_PKEY *pkey)
89{
90 if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
91 return pkey->ameth->pkey_bits(pkey);
92 return 0;
93}
94
95int
96EVP_PKEY_size(EVP_PKEY *pkey)
97{
98 if (pkey && pkey->ameth && pkey->ameth->pkey_size)
99 return pkey->ameth->pkey_size(pkey);
100 return 0;
101}
102
103int
104EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
105{
106#ifndef OPENSSL_NO_DSA
107 if (pkey->type == EVP_PKEY_DSA) {
108 int ret = pkey->save_parameters;
109
110 if (mode >= 0)
111 pkey->save_parameters = mode;
112 return (ret);
113 }
114#endif
115#ifndef OPENSSL_NO_EC
116 if (pkey->type == EVP_PKEY_EC) {
117 int ret = pkey->save_parameters;
118
119 if (mode >= 0)
120 pkey->save_parameters = mode;
121 return (ret);
122 }
123#endif
124 return (0);
125}
126
127int
128EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
129{
130 if (to->type != from->type) {
131 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,
132 EVP_R_DIFFERENT_KEY_TYPES);
133 goto err;
134 }
135
136 if (EVP_PKEY_missing_parameters(from)) {
137 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,
138 EVP_R_MISSING_PARAMETERS);
139 goto err;
140 }
141 if (from->ameth && from->ameth->param_copy)
142 return from->ameth->param_copy(to, from);
143
144err:
145 return 0;
146}
147
148int
149EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
150{
151 if (pkey->ameth && pkey->ameth->param_missing)
152 return pkey->ameth->param_missing(pkey);
153 return 0;
154}
155
156int
157EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
158{
159 if (a->type != b->type)
160 return -1;
161 if (a->ameth && a->ameth->param_cmp)
162 return a->ameth->param_cmp(a, b);
163 return -2;
164}
165
166int
167EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
168{
169 if (a->type != b->type)
170 return -1;
171
172 if (a->ameth) {
173 int ret;
174 /* Compare parameters if the algorithm has them */
175 if (a->ameth->param_cmp) {
176 ret = a->ameth->param_cmp(a, b);
177 if (ret <= 0)
178 return ret;
179 }
180
181 if (a->ameth->pub_cmp)
182 return a->ameth->pub_cmp(a, b);
183 }
184
185 return -2;
186}
187
188EVP_PKEY *
189EVP_PKEY_new(void)
190{
191 EVP_PKEY *ret;
192
193 ret = malloc(sizeof(EVP_PKEY));
194 if (ret == NULL) {
195 EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
196 return (NULL);
197 }
198 ret->type = EVP_PKEY_NONE;
199 ret->save_type = EVP_PKEY_NONE;
200 ret->references = 1;
201 ret->ameth = NULL;
202 ret->engine = NULL;
203 ret->pkey.ptr = NULL;
204 ret->attributes = NULL;
205 ret->save_parameters = 1;
206 return (ret);
207}
208
209/* Setup a public key ASN1 method and ENGINE from a NID or a string.
210 * If pkey is NULL just return 1 or 0 if the algorithm exists.
211 */
212
213static int
214pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
215{
216 const EVP_PKEY_ASN1_METHOD *ameth;
217 ENGINE *e = NULL;
218 if (pkey) {
219 if (pkey->pkey.ptr)
220 EVP_PKEY_free_it(pkey);
221 /* If key type matches and a method exists then this
222 * lookup has succeeded once so just indicate success.
223 */
224 if ((type == pkey->save_type) && pkey->ameth)
225 return 1;
226#ifndef OPENSSL_NO_ENGINE
227 /* If we have an ENGINE release it */
228 if (pkey->engine) {
229 ENGINE_finish(pkey->engine);
230 pkey->engine = NULL;
231 }
232#endif
233 }
234 if (str)
235 ameth = EVP_PKEY_asn1_find_str(&e, str, len);
236 else
237 ameth = EVP_PKEY_asn1_find(&e, type);
238#ifndef OPENSSL_NO_ENGINE
239 if (!pkey && e)
240 ENGINE_finish(e);
241#endif
242 if (!ameth) {
243 EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
244 return 0;
245 }
246 if (pkey) {
247 pkey->ameth = ameth;
248 pkey->engine = e;
249
250 pkey->type = pkey->ameth->pkey_id;
251 pkey->save_type = type;
252 }
253 return 1;
254}
255
256int
257EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
258{
259 return pkey_set_type(pkey, type, NULL, -1);
260}
261
262int
263EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
264{
265 return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
266}
267
268int
269EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
270{
271 if (!EVP_PKEY_set_type(pkey, type))
272 return 0;
273 pkey->pkey.ptr = key;
274 return (key != NULL);
275}
276
277void *
278EVP_PKEY_get0(EVP_PKEY *pkey)
279{
280 return pkey->pkey.ptr;
281}
282
283#ifndef OPENSSL_NO_RSA
284int
285EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
286{
287 int ret = EVP_PKEY_assign_RSA(pkey, key);
288 if (ret)
289 RSA_up_ref(key);
290 return ret;
291}
292
293RSA *
294EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
295{
296 if (pkey->type != EVP_PKEY_RSA) {
297 EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
298 return NULL;
299 }
300 RSA_up_ref(pkey->pkey.rsa);
301 return pkey->pkey.rsa;
302}
303#endif
304
305#ifndef OPENSSL_NO_DSA
306int
307EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
308{
309 int ret = EVP_PKEY_assign_DSA(pkey, key);
310 if (ret)
311 DSA_up_ref(key);
312 return ret;
313}
314
315DSA *
316EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
317{
318 if (pkey->type != EVP_PKEY_DSA) {
319 EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
320 return NULL;
321 }
322 DSA_up_ref(pkey->pkey.dsa);
323 return pkey->pkey.dsa;
324}
325#endif
326
327#ifndef OPENSSL_NO_EC
328
329int
330EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
331{
332 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
333 if (ret)
334 EC_KEY_up_ref(key);
335 return ret;
336}
337
338EC_KEY *
339EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
340{
341 if (pkey->type != EVP_PKEY_EC) {
342 EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
343 return NULL;
344 }
345 EC_KEY_up_ref(pkey->pkey.ec);
346 return pkey->pkey.ec;
347}
348#endif
349
350
351#ifndef OPENSSL_NO_DH
352
353int
354EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
355{
356 int ret = EVP_PKEY_assign_DH(pkey, key);
357 if (ret)
358 DH_up_ref(key);
359 return ret;
360}
361
362DH *
363EVP_PKEY_get1_DH(EVP_PKEY *pkey)
364{
365 if (pkey->type != EVP_PKEY_DH) {
366 EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
367 return NULL;
368 }
369 DH_up_ref(pkey->pkey.dh);
370 return pkey->pkey.dh;
371}
372#endif
373
374int
375EVP_PKEY_type(int type)
376{
377 int ret;
378 const EVP_PKEY_ASN1_METHOD *ameth;
379 ENGINE *e;
380 ameth = EVP_PKEY_asn1_find(&e, type);
381 if (ameth)
382 ret = ameth->pkey_id;
383 else
384 ret = NID_undef;
385#ifndef OPENSSL_NO_ENGINE
386 if (e)
387 ENGINE_finish(e);
388#endif
389 return ret;
390}
391
392int
393EVP_PKEY_id(const EVP_PKEY *pkey)
394{
395 return pkey->type;
396}
397
398int
399EVP_PKEY_base_id(const EVP_PKEY *pkey)
400{
401 return EVP_PKEY_type(pkey->type);
402}
403
404void
405EVP_PKEY_free(EVP_PKEY *x)
406{
407 int i;
408
409 if (x == NULL)
410 return;
411
412 i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_EVP_PKEY);
413 if (i > 0)
414 return;
415
416 EVP_PKEY_free_it(x);
417 if (x->attributes)
418 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
419 free(x);
420}
421
422static void
423EVP_PKEY_free_it(EVP_PKEY *x)
424{
425 if (x->ameth && x->ameth->pkey_free) {
426 x->ameth->pkey_free(x);
427 x->pkey.ptr = NULL;
428 }
429#ifndef OPENSSL_NO_ENGINE
430 if (x->engine) {
431 ENGINE_finish(x->engine);
432 x->engine = NULL;
433 }
434#endif
435}
436
437static int
438unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, const char *kstr)
439{
440 BIO_indent(out, indent, 128);
441 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
442 kstr, OBJ_nid2ln(pkey->type));
443 return 1;
444}
445
446int
447EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
448 ASN1_PCTX *pctx)
449{
450 if (pkey->ameth && pkey->ameth->pub_print)
451 return pkey->ameth->pub_print(out, pkey, indent, pctx);
452
453 return unsup_alg(out, pkey, indent, "Public Key");
454}
455
456int
457EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
458 ASN1_PCTX *pctx)
459{
460 if (pkey->ameth && pkey->ameth->priv_print)
461 return pkey->ameth->priv_print(out, pkey, indent, pctx);
462
463 return unsup_alg(out, pkey, indent, "Private Key");
464}
465
466int
467EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
468 ASN1_PCTX *pctx)
469{
470 if (pkey->ameth && pkey->ameth->param_print)
471 return pkey->ameth->param_print(out, pkey, indent, pctx);
472 return unsup_alg(out, pkey, indent, "Parameters");
473}
474
475int
476EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
477{
478 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
479 return -2;
480 return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID,
481 0, pnid);
482}
483
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