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>
68 static void EVP_PKEY_free_it(EVP_PKEY *x);
70 int EVP_PKEY_bits(EVP_PKEY *pkey)
74 #ifndef OPENSSL_NO_RSA
75 else if (pkey->type == EVP_PKEY_RSA)
76 return(BN_num_bits(pkey->pkey.rsa->n));
78 #ifndef OPENSSL_NO_DSA
79 else if (pkey->type == EVP_PKEY_DSA)
80 return(BN_num_bits(pkey->pkey.dsa->p));
83 else if (pkey->type == EVP_PKEY_EC)
85 BIGNUM *order = BN_new();
93 if (!EC_GROUP_get_order(pkey->pkey.eckey->group, order, NULL))
99 ret = BN_num_bits(order);
107 int EVP_PKEY_size(EVP_PKEY *pkey)
111 #ifndef OPENSSL_NO_RSA
112 if (pkey->type == EVP_PKEY_RSA)
113 return(RSA_size(pkey->pkey.rsa));
116 #ifndef OPENSSL_NO_DSA
117 if (pkey->type == EVP_PKEY_DSA)
118 return(DSA_size(pkey->pkey.dsa));
120 #ifndef OPENSSL_NO_ECDSA
121 if (pkey->type == EVP_PKEY_EC)
122 return(ECDSA_size(pkey->pkey.eckey));
128 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
130 #ifndef OPENSSL_NO_DSA
131 if (pkey->type == EVP_PKEY_DSA)
133 int ret=pkey->save_parameters;
136 pkey->save_parameters=mode;
140 #ifndef OPENSSL_NO_EC
141 if (pkey->type == EVP_PKEY_EC)
143 int ret = pkey->save_parameters;
146 pkey->save_parameters = mode;
153 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
155 if (to->type != from->type)
157 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
161 if (EVP_PKEY_missing_parameters(from))
163 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
166 #ifndef OPENSSL_NO_DSA
167 if (to->type == EVP_PKEY_DSA)
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);
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);
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);
184 #ifndef OPENSSL_NO_EC
185 if (to->type == EVP_PKEY_EC)
187 if (to->pkey.eckey->group != NULL)
188 EC_GROUP_free(to->pkey.eckey->group);
189 if ((to->pkey.eckey->group = EC_GROUP_new(
190 EC_GROUP_method_of(from->pkey.eckey->group))) == NULL)
192 if (!EC_GROUP_copy(to->pkey.eckey->group,
193 from->pkey.eckey->group)) goto err;
201 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
203 #ifndef OPENSSL_NO_DSA
204 if (pkey->type == EVP_PKEY_DSA)
209 if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
213 #ifndef OPENSSL_NO_EC
214 if (pkey->type == EVP_PKEY_EC)
216 if (pkey->pkey.eckey->group == NULL)
224 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
226 #ifndef OPENSSL_NO_DSA
227 if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
229 if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
230 BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
231 BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
240 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
242 if (a->type != b->type)
246 We should really check for != 0, but cmp_paramters doesn't compare EC
247 groups, and I'm currently unsure how to handle that case... Except for
248 adding such functionality to cmp_parameters, but that would require
249 things like EC_GROUP_cmp(), which I'm not currently ready to write.
250 -- Richard Levitte */
251 if (EVP_PKEY_cmp_parameters(a, b) == 1)
256 #ifndef OPENSSL_NO_RSA
258 if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
259 || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
263 #ifndef OPENSSL_NO_DSA
265 if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
269 #ifndef OPENSSL_NO_EC
272 int r = EC_POINT_cmp(b->pkey.eckey->group,
273 b->pkey.eckey->pub_key,a->pkey.eckey->pub_key,NULL);
284 #ifndef OPENSSL_NO_DH
295 EVP_PKEY *EVP_PKEY_new(void)
299 ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
302 EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
305 ret->type=EVP_PKEY_NONE;
308 ret->attributes=NULL;
309 ret->save_parameters=1;
313 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
315 if (pkey == NULL) return(0);
316 if (pkey->pkey.ptr != NULL)
317 EVP_PKEY_free_it(pkey);
318 pkey->type=EVP_PKEY_type(type);
319 pkey->save_type=type;
324 #ifndef OPENSSL_NO_RSA
325 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
327 int ret = EVP_PKEY_assign_RSA(pkey, key);
333 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
335 if(pkey->type != EVP_PKEY_RSA) {
336 EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
339 RSA_up_ref(pkey->pkey.rsa);
340 return pkey->pkey.rsa;
344 #ifndef OPENSSL_NO_DSA
345 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
347 int ret = EVP_PKEY_assign_DSA(pkey, key);
353 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
355 if(pkey->type != EVP_PKEY_DSA) {
356 EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
359 DSA_up_ref(pkey->pkey.dsa);
360 return pkey->pkey.dsa;
364 #ifndef OPENSSL_NO_EC
366 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
368 int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
369 if (ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_EC);
373 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
375 if (pkey->type != EVP_PKEY_EC)
377 EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
380 CRYPTO_add(&pkey->pkey.eckey->references, 1, CRYPTO_LOCK_EC);
381 return pkey->pkey.eckey;
386 #ifndef OPENSSL_NO_DH
388 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
390 int ret = EVP_PKEY_assign_DH(pkey, key);
396 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
398 if(pkey->type != EVP_PKEY_DH) {
399 EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
402 DH_up_ref(pkey->pkey.dh);
403 return pkey->pkey.dh;
407 int EVP_PKEY_type(int type)
413 return(EVP_PKEY_RSA);
419 return(EVP_PKEY_DSA);
429 void EVP_PKEY_free(EVP_PKEY *x)
433 if (x == NULL) return;
435 i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
437 REF_PRINT("EVP_PKEY",x);
443 fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
451 static void EVP_PKEY_free_it(EVP_PKEY *x)
455 #ifndef OPENSSL_NO_RSA
458 RSA_free(x->pkey.rsa);
461 #ifndef OPENSSL_NO_DSA
466 DSA_free(x->pkey.dsa);
469 #ifndef OPENSSL_NO_EC
471 EC_KEY_free(x->pkey.eckey);
474 #ifndef OPENSSL_NO_DH