1 /* crypto/evp/p_lib.c */
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/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 #ifndef OPENSSL_NO_RSA
68 # include <openssl/rsa.h>
70 #ifndef OPENSSL_NO_DSA
71 # include <openssl/dsa.h>
74 # include <openssl/dh.h>
77 static void EVP_PKEY_free_it(EVP_PKEY *x);
79 int EVP_PKEY_bits(EVP_PKEY *pkey)
83 #ifndef OPENSSL_NO_RSA
84 else if (pkey->type == EVP_PKEY_RSA)
85 return (BN_num_bits(pkey->pkey.rsa->n));
87 #ifndef OPENSSL_NO_DSA
88 else if (pkey->type == EVP_PKEY_DSA)
89 return (BN_num_bits(pkey->pkey.dsa->p));
92 else if (pkey->type == EVP_PKEY_EC) {
93 BIGNUM *order = BN_new();
94 const EC_GROUP *group;
101 group = EC_KEY_get0_group(pkey->pkey.ec);
102 if (!EC_GROUP_get_order(group, order, NULL)) {
107 ret = BN_num_bits(order);
115 int EVP_PKEY_size(EVP_PKEY *pkey)
119 #ifndef OPENSSL_NO_RSA
120 if (pkey->type == EVP_PKEY_RSA)
121 return (RSA_size(pkey->pkey.rsa));
124 #ifndef OPENSSL_NO_DSA
125 if (pkey->type == EVP_PKEY_DSA)
126 return (DSA_size(pkey->pkey.dsa));
128 #ifndef OPENSSL_NO_ECDSA
129 if (pkey->type == EVP_PKEY_EC)
130 return (ECDSA_size(pkey->pkey.ec));
136 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
138 #ifndef OPENSSL_NO_DSA
139 if (pkey->type == EVP_PKEY_DSA) {
140 int ret = pkey->save_parameters;
143 pkey->save_parameters = mode;
147 #ifndef OPENSSL_NO_EC
148 if (pkey->type == EVP_PKEY_EC) {
149 int ret = pkey->save_parameters;
152 pkey->save_parameters = mode;
159 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
161 if (to->type != from->type) {
162 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES);
166 if (EVP_PKEY_missing_parameters(from)) {
167 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS);
170 #ifndef OPENSSL_NO_DSA
171 if (to->type == EVP_PKEY_DSA) {
174 if ((a = BN_dup(from->pkey.dsa->p)) == NULL)
176 if (to->pkey.dsa->p != NULL)
177 BN_free(to->pkey.dsa->p);
180 if ((a = BN_dup(from->pkey.dsa->q)) == NULL)
182 if (to->pkey.dsa->q != NULL)
183 BN_free(to->pkey.dsa->q);
186 if ((a = BN_dup(from->pkey.dsa->g)) == NULL)
188 if (to->pkey.dsa->g != NULL)
189 BN_free(to->pkey.dsa->g);
193 #ifndef OPENSSL_NO_EC
194 if (to->type == EVP_PKEY_EC) {
195 EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
198 if (EC_KEY_set_group(to->pkey.ec, group) == 0)
200 EC_GROUP_free(group);
208 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
210 #ifndef OPENSSL_NO_DSA
211 if (pkey->type == EVP_PKEY_DSA) {
214 dsa = pkey->pkey.dsa;
215 if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
219 #ifndef OPENSSL_NO_EC
220 if (pkey->type == EVP_PKEY_EC) {
221 if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
229 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
231 #ifndef OPENSSL_NO_DSA
232 if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA)) {
233 if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) ||
234 BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) ||
235 BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g))
241 #ifndef OPENSSL_NO_EC
242 if (a->type == EVP_PKEY_EC && b->type == EVP_PKEY_EC) {
243 const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
244 *group_b = EC_KEY_get0_group(b->pkey.ec);
245 if (EC_GROUP_cmp(group_a, group_b, NULL))
254 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
256 if (a->type != b->type)
259 if (EVP_PKEY_cmp_parameters(a, b) == 0)
263 #ifndef OPENSSL_NO_RSA
265 if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0
266 || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0)
270 #ifndef OPENSSL_NO_DSA
272 if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0)
276 #ifndef OPENSSL_NO_EC
280 const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
281 const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
282 *pb = EC_KEY_get0_public_key(b->pkey.ec);
283 r = EC_POINT_cmp(group, pa, pb, NULL);
293 #ifndef OPENSSL_NO_DH
304 EVP_PKEY *EVP_PKEY_new(void)
308 ret = (EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
310 EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
313 ret->type = EVP_PKEY_NONE;
315 ret->pkey.ptr = NULL;
316 ret->attributes = NULL;
317 ret->save_parameters = 1;
321 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
325 if (pkey->pkey.ptr != NULL)
326 EVP_PKEY_free_it(pkey);
327 pkey->type = EVP_PKEY_type(type);
328 pkey->save_type = type;
329 pkey->pkey.ptr = key;
330 return (key != NULL);
333 #ifndef OPENSSL_NO_RSA
334 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
336 int ret = EVP_PKEY_assign_RSA(pkey, key);
342 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
344 if (pkey->type != EVP_PKEY_RSA) {
345 EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
348 RSA_up_ref(pkey->pkey.rsa);
349 return pkey->pkey.rsa;
353 #ifndef OPENSSL_NO_DSA
354 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
356 int ret = EVP_PKEY_assign_DSA(pkey, key);
362 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
364 if (pkey->type != EVP_PKEY_DSA) {
365 EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
368 DSA_up_ref(pkey->pkey.dsa);
369 return pkey->pkey.dsa;
373 #ifndef OPENSSL_NO_EC
375 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
377 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
383 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
385 if (pkey->type != EVP_PKEY_EC) {
386 EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
389 EC_KEY_up_ref(pkey->pkey.ec);
390 return pkey->pkey.ec;
394 #ifndef OPENSSL_NO_DH
396 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
398 int ret = EVP_PKEY_assign_DH(pkey, key);
404 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
406 if (pkey->type != EVP_PKEY_DH) {
407 EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
410 DH_up_ref(pkey->pkey.dh);
411 return pkey->pkey.dh;
415 int EVP_PKEY_type(int type)
420 return (EVP_PKEY_RSA);
426 return (EVP_PKEY_DSA);
428 return (EVP_PKEY_DH);
430 return (EVP_PKEY_EC);
436 void EVP_PKEY_free(EVP_PKEY *x)
443 i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_EVP_PKEY);
445 REF_PRINT("EVP_PKEY", x);
451 fprintf(stderr, "EVP_PKEY_free, bad reference count\n");
457 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
461 static void EVP_PKEY_free_it(EVP_PKEY *x)
464 #ifndef OPENSSL_NO_RSA
467 RSA_free(x->pkey.rsa);
470 #ifndef OPENSSL_NO_DSA
475 DSA_free(x->pkey.dsa);
478 #ifndef OPENSSL_NO_EC
480 EC_KEY_free(x->pkey.ec);
483 #ifndef OPENSSL_NO_DH