1 /* $OpenBSD: p_lib.c,v 1.25 2019/03/17 18:17:45 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/opensslconf.h>
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>
70 #include <openssl/dh.h>
72 #ifndef OPENSSL_NO_DSA
73 #include <openssl/dsa.h>
75 #ifndef OPENSSL_NO_RSA
76 #include <openssl/rsa.h>
79 #ifndef OPENSSL_NO_ENGINE
80 #include <openssl/engine.h>
83 #include "asn1_locl.h"
85 static void EVP_PKEY_free_it(EVP_PKEY *x);
88 EVP_PKEY_bits(const EVP_PKEY *pkey)
90 if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
91 return pkey->ameth->pkey_bits(pkey);
96 EVP_PKEY_size(const EVP_PKEY *pkey)
98 if (pkey && pkey->ameth && pkey->ameth->pkey_size)
99 return pkey->ameth->pkey_size(pkey);
104 EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
106 #ifndef OPENSSL_NO_DSA
107 if (pkey->type == EVP_PKEY_DSA) {
108 int ret = pkey->save_parameters;
111 pkey->save_parameters = mode;
115 #ifndef OPENSSL_NO_EC
116 if (pkey->type == EVP_PKEY_EC) {
117 int ret = pkey->save_parameters;
120 pkey->save_parameters = mode;
128 EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
130 if (to->type != from->type) {
131 EVPerror(EVP_R_DIFFERENT_KEY_TYPES);
135 if (EVP_PKEY_missing_parameters(from)) {
136 EVPerror(EVP_R_MISSING_PARAMETERS);
139 if (from->ameth && from->ameth->param_copy)
140 return from->ameth->param_copy(to, from);
147 EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
149 if (pkey->ameth && pkey->ameth->param_missing)
150 return pkey->ameth->param_missing(pkey);
155 EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
157 if (a->type != b->type)
159 if (a->ameth && a->ameth->param_cmp)
160 return a->ameth->param_cmp(a, b);
165 EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
167 if (a->type != b->type)
172 /* Compare parameters if the algorithm has them */
173 if (a->ameth->param_cmp) {
174 ret = a->ameth->param_cmp(a, b);
179 if (a->ameth->pub_cmp)
180 return a->ameth->pub_cmp(a, b);
191 ret = malloc(sizeof(EVP_PKEY));
193 EVPerror(ERR_R_MALLOC_FAILURE);
196 ret->type = EVP_PKEY_NONE;
197 ret->save_type = EVP_PKEY_NONE;
201 ret->pkey.ptr = NULL;
202 ret->attributes = NULL;
203 ret->save_parameters = 1;
208 EVP_PKEY_up_ref(EVP_PKEY *pkey)
210 int refs = CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
211 return ((refs > 1) ? 1 : 0);
214 /* Setup a public key ASN1 method and ENGINE from a NID or a string.
215 * If pkey is NULL just return 1 or 0 if the algorithm exists.
219 pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
221 const EVP_PKEY_ASN1_METHOD *ameth;
225 EVP_PKEY_free_it(pkey);
226 /* If key type matches and a method exists then this
227 * lookup has succeeded once so just indicate success.
229 if ((type == pkey->save_type) && pkey->ameth)
231 #ifndef OPENSSL_NO_ENGINE
232 ENGINE_finish(pkey->engine);
237 ameth = EVP_PKEY_asn1_find_str(&e, str, len);
239 ameth = EVP_PKEY_asn1_find(&e, type);
240 #ifndef OPENSSL_NO_ENGINE
245 EVPerror(EVP_R_UNSUPPORTED_ALGORITHM);
252 pkey->type = pkey->ameth->pkey_id;
253 pkey->save_type = type;
259 EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
261 return pkey_set_type(pkey, type, NULL, -1);
265 EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
267 return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
271 EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
273 if (!EVP_PKEY_set_type(pkey, type))
275 pkey->pkey.ptr = key;
276 return (key != NULL);
280 EVP_PKEY_get0(const EVP_PKEY *pkey)
282 return pkey->pkey.ptr;
285 const unsigned char *
286 EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
288 ASN1_OCTET_STRING *os;
290 if (pkey->type != EVP_PKEY_HMAC) {
291 EVPerror(EVP_R_EXPECTING_AN_HMAC_KEY);
295 os = EVP_PKEY_get0(pkey);
301 #ifndef OPENSSL_NO_RSA
303 EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
305 if (pkey->type != EVP_PKEY_RSA) {
306 EVPerror(EVP_R_EXPECTING_AN_RSA_KEY);
309 return pkey->pkey.rsa;
313 EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
315 if (pkey->type != EVP_PKEY_RSA) {
316 EVPerror(EVP_R_EXPECTING_AN_RSA_KEY);
319 RSA_up_ref(pkey->pkey.rsa);
320 return pkey->pkey.rsa;
324 EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
326 int ret = EVP_PKEY_assign_RSA(pkey, key);
333 #ifndef OPENSSL_NO_DSA
335 EVP_PKEY_get0_DSA(EVP_PKEY *pkey)
337 if (pkey->type != EVP_PKEY_DSA) {
338 EVPerror(EVP_R_EXPECTING_A_DSA_KEY);
341 return pkey->pkey.dsa;
345 EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
347 if (pkey->type != EVP_PKEY_DSA) {
348 EVPerror(EVP_R_EXPECTING_A_DSA_KEY);
351 DSA_up_ref(pkey->pkey.dsa);
352 return pkey->pkey.dsa;
356 EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
358 int ret = EVP_PKEY_assign_DSA(pkey, key);
365 #ifndef OPENSSL_NO_EC
367 EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey)
369 if (pkey->type != EVP_PKEY_EC) {
370 EVPerror(EVP_R_EXPECTING_A_EC_KEY);
373 return pkey->pkey.ec;
377 EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
379 if (pkey->type != EVP_PKEY_EC) {
380 EVPerror(EVP_R_EXPECTING_A_EC_KEY);
383 EC_KEY_up_ref(pkey->pkey.ec);
384 return pkey->pkey.ec;
388 EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
390 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
398 #ifndef OPENSSL_NO_DH
400 EVP_PKEY_get0_DH(EVP_PKEY *pkey)
402 if (pkey->type != EVP_PKEY_DH) {
403 EVPerror(EVP_R_EXPECTING_A_DH_KEY);
406 return pkey->pkey.dh;
410 EVP_PKEY_get1_DH(EVP_PKEY *pkey)
412 if (pkey->type != EVP_PKEY_DH) {
413 EVPerror(EVP_R_EXPECTING_A_DH_KEY);
416 DH_up_ref(pkey->pkey.dh);
417 return pkey->pkey.dh;
421 EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
423 int ret = EVP_PKEY_assign_DH(pkey, key);
431 EVP_PKEY_type(int type)
434 const EVP_PKEY_ASN1_METHOD *ameth;
436 ameth = EVP_PKEY_asn1_find(&e, type);
438 ret = ameth->pkey_id;
441 #ifndef OPENSSL_NO_ENGINE
448 EVP_PKEY_id(const EVP_PKEY *pkey)
454 EVP_PKEY_base_id(const EVP_PKEY *pkey)
456 return EVP_PKEY_type(pkey->type);
460 EVP_PKEY_free(EVP_PKEY *x)
467 i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_EVP_PKEY);
473 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
478 EVP_PKEY_free_it(EVP_PKEY *x)
480 if (x->ameth && x->ameth->pkey_free) {
481 x->ameth->pkey_free(x);
484 #ifndef OPENSSL_NO_ENGINE
485 ENGINE_finish(x->engine);
491 unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, const char *kstr)
493 BIO_indent(out, indent, 128);
494 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
495 kstr, OBJ_nid2ln(pkey->type));
500 EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
503 if (pkey->ameth && pkey->ameth->pub_print)
504 return pkey->ameth->pub_print(out, pkey, indent, pctx);
506 return unsup_alg(out, pkey, indent, "Public Key");
510 EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
513 if (pkey->ameth && pkey->ameth->priv_print)
514 return pkey->ameth->priv_print(out, pkey, indent, pctx);
516 return unsup_alg(out, pkey, indent, "Private Key");
520 EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
523 if (pkey->ameth && pkey->ameth->param_print)
524 return pkey->ameth->param_print(out, pkey, indent, pctx);
525 return unsup_alg(out, pkey, indent, "Parameters");
529 EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
531 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
533 return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID,