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 #ifndef OPENSSL_NO_ENGINE
78 #include <openssl/engine.h>
81 #include "asn1_locl.h"
83 static void EVP_PKEY_free_it(EVP_PKEY *x);
85 int EVP_PKEY_bits(EVP_PKEY *pkey)
87 if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
88 return pkey->ameth->pkey_bits(pkey);
92 int EVP_PKEY_security_bits(const EVP_PKEY *pkey)
96 if (!pkey->ameth || !pkey->ameth->pkey_security_bits)
98 return pkey->ameth->pkey_security_bits(pkey);
101 int EVP_PKEY_size(EVP_PKEY *pkey)
103 if (pkey && pkey->ameth && pkey->ameth->pkey_size)
104 return pkey->ameth->pkey_size(pkey);
108 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
110 #ifndef OPENSSL_NO_DSA
111 if (pkey->type == EVP_PKEY_DSA)
113 int ret=pkey->save_parameters;
116 pkey->save_parameters=mode;
120 #ifndef OPENSSL_NO_EC
121 if (pkey->type == EVP_PKEY_EC)
123 int ret = pkey->save_parameters;
126 pkey->save_parameters = mode;
133 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
135 if (to->type != from->type)
137 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
141 if (EVP_PKEY_missing_parameters(from))
143 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
146 if (from->ameth && from->ameth->param_copy)
147 return from->ameth->param_copy(to, from);
152 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
154 if (pkey->ameth && pkey->ameth->param_missing)
155 return pkey->ameth->param_missing(pkey);
159 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
161 if (a->type != b->type)
163 if (a->ameth && a->ameth->param_cmp)
164 return a->ameth->param_cmp(a, b);
168 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
170 if (a->type != b->type)
176 /* Compare parameters if the algorithm has them */
177 if (a->ameth->param_cmp)
179 ret = a->ameth->param_cmp(a, b);
184 if (a->ameth->pub_cmp)
185 return a->ameth->pub_cmp(a, b);
191 EVP_PKEY *EVP_PKEY_new(void)
195 ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
198 EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
201 ret->type=EVP_PKEY_NONE;
202 ret->save_type=EVP_PKEY_NONE;
207 ret->attributes=NULL;
208 ret->save_parameters=1;
212 /* Setup a public key ASN1 method and ENGINE from a NID or a string.
213 * If pkey is NULL just return 1 or 0 if the algorithm exists.
216 static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
218 const EVP_PKEY_ASN1_METHOD *ameth;
223 EVP_PKEY_free_it(pkey);
224 /* If key type matches and a method exists then this
225 * lookup has succeeded once so just indicate success.
227 if ((type == pkey->save_type) && pkey->ameth)
229 #ifndef OPENSSL_NO_ENGINE
230 /* If we have an ENGINE release it */
233 ENGINE_finish(pkey->engine);
239 ameth = EVP_PKEY_asn1_find_str(&e, str, len);
241 ameth = EVP_PKEY_asn1_find(&e, type);
242 #ifndef OPENSSL_NO_ENGINE
248 EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
256 pkey->type = pkey->ameth->pkey_id;
257 pkey->save_type=type;
262 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
264 return pkey_set_type(pkey, type, NULL, -1);
267 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
269 return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
272 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
274 if (!EVP_PKEY_set_type(pkey, type))
277 return (key != NULL);
280 void *EVP_PKEY_get0(EVP_PKEY *pkey)
282 return pkey->pkey.ptr;
285 #ifndef OPENSSL_NO_RSA
286 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
288 int ret = EVP_PKEY_assign_RSA(pkey, key);
294 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
296 if(pkey->type != EVP_PKEY_RSA) {
297 EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
300 RSA_up_ref(pkey->pkey.rsa);
301 return pkey->pkey.rsa;
305 #ifndef OPENSSL_NO_DSA
306 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
308 int ret = EVP_PKEY_assign_DSA(pkey, key);
314 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
316 if(pkey->type != EVP_PKEY_DSA) {
317 EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
320 DSA_up_ref(pkey->pkey.dsa);
321 return pkey->pkey.dsa;
325 #ifndef OPENSSL_NO_EC
327 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
329 int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
335 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
337 if (pkey->type != EVP_PKEY_EC)
339 EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
342 EC_KEY_up_ref(pkey->pkey.ec);
343 return pkey->pkey.ec;
348 #ifndef OPENSSL_NO_DH
350 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
352 int ret = EVP_PKEY_assign_DH(pkey, key);
358 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
360 if(pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
361 EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
364 DH_up_ref(pkey->pkey.dh);
365 return pkey->pkey.dh;
369 int EVP_PKEY_type(int type)
372 const EVP_PKEY_ASN1_METHOD *ameth;
374 ameth = EVP_PKEY_asn1_find(&e, type);
376 ret = ameth->pkey_id;
379 #ifndef OPENSSL_NO_ENGINE
386 int EVP_PKEY_id(const EVP_PKEY *pkey)
391 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
393 return EVP_PKEY_type(pkey->type);
396 void EVP_PKEY_free(EVP_PKEY *x)
400 if (x == NULL) return;
402 i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
404 REF_PRINT("EVP_PKEY",x);
410 fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
416 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
420 static void EVP_PKEY_free_it(EVP_PKEY *x)
422 if (x->ameth && x->ameth->pkey_free)
424 x->ameth->pkey_free(x);
427 #ifndef OPENSSL_NO_ENGINE
430 ENGINE_finish(x->engine);
436 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
439 BIO_indent(out, indent, 128);
440 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
441 kstr, OBJ_nid2ln(pkey->type));
445 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
446 int indent, ASN1_PCTX *pctx)
448 if (pkey->ameth && pkey->ameth->pub_print)
449 return pkey->ameth->pub_print(out, pkey, indent, pctx);
451 return unsup_alg(out, pkey, indent, "Public Key");
454 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
455 int indent, ASN1_PCTX *pctx)
457 if (pkey->ameth && pkey->ameth->priv_print)
458 return pkey->ameth->priv_print(out, pkey, indent, pctx);
460 return unsup_alg(out, pkey, indent, "Private Key");
463 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
464 int indent, ASN1_PCTX *pctx)
466 if (pkey->ameth && pkey->ameth->param_print)
467 return pkey->ameth->param_print(out, pkey, indent, pctx);
468 return unsup_alg(out, pkey, indent, "Parameters");
471 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
473 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
475 return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID,