1 /* evp_pkey.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include "cryptlib.h"
62 #include <openssl/x509.h>
63 #include <openssl/rand.h>
64 #include "asn1_locl.h"
65
66 /* Extract a private key from a PKCS8 structure */
67
68 EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)
69 {
70 EVP_PKEY *pkey = NULL;
71 ASN1_OBJECT *algoid;
72 char obj_tmp[80];
73
74 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
75 return NULL;
76
77 if (!(pkey = EVP_PKEY_new())) {
78 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
79 return NULL;
80 }
81
82 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid)))
83 {
84 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
85 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
86 ERR_add_error_data(2, "TYPE=", obj_tmp);
87 goto error;
88 }
89
90 if (pkey->ameth->priv_decode)
91 {
92 if (!pkey->ameth->priv_decode(pkey, p8))
93 {
94 EVPerr(EVP_F_EVP_PKCS82PKEY,
95 EVP_R_PRIVATE_KEY_DECODE_ERROR);
96 goto error;
97 }
98 }
99 else
100 {
101 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED);
102 goto error;
103 }
104
105 return pkey;
106
107 error:
108 EVP_PKEY_free (pkey);
109 return NULL;
110 }
111
112 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
113 {
114 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
115 }
116
117 /* Turn a private key into a PKCS8 structure */
118
119 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
120 {
121 PKCS8_PRIV_KEY_INFO *p8;
122
123 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
124 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
125 return NULL;
126 }
127 p8->broken = broken;
128
129 if (pkey->ameth)
130 {
131 if (pkey->ameth->priv_encode)
132 {
133 if (!pkey->ameth->priv_encode(p8, pkey))
134 {
135 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
136 EVP_R_PRIVATE_KEY_ENCODE_ERROR);
137 goto error;
138 }
139 }
140 else
141 {
142 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
143 EVP_R_METHOD_NOT_SUPPORTED);
144 goto error;
145 }
146 }
147 else
148 {
149 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
150 EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
151 goto error;
152 }
153 RAND_add(p8->pkey->value.octet_string->data,
154 p8->pkey->value.octet_string->length, 0.0);
155 return p8;
156 error:
157 PKCS8_PRIV_KEY_INFO_free(p8);
158 return NULL;
159 }
160
161 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
162 {
163 switch (broken) {
164
165 case PKCS8_OK:
166 p8->broken = PKCS8_OK;
167 return p8;
168 break;
169
170 case PKCS8_NO_OCTET:
171 p8->broken = PKCS8_NO_OCTET;
172 p8->pkey->type = V_ASN1_SEQUENCE;
173 return p8;
174 break;
175
176 default:
177 EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
178 return NULL;
179 }
180 }
181
182 /* EVP_PKEY attribute functions */
183
184 int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
185 {
186 return X509at_get_attr_count(key->attributes);
187 }
188
189 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,
190 int lastpos)
191 {
192 return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
193 }
194
195 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,
196 int lastpos)
197 {
198 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
199 }
200
201 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
202 {
203 return X509at_get_attr(key->attributes, loc);
204 }
205
206 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
207 {
208 return X509at_delete_attr(key->attributes, loc);
209 }
210
211 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
212 {
213 if(X509at_add1_attr(&key->attributes, attr)) return 1;
214 return 0;
215 }
216
217 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
218 const ASN1_OBJECT *obj, int type,
219 const unsigned char *bytes, int len)
220 {
221 if(X509at_add1_attr_by_OBJ(&key->attributes, obj,
222 type, bytes, len)) return 1;
223 return 0;
224 }
225
226 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
227 int nid, int type,
228 const unsigned char *bytes, int len)
229 {
230 if(X509at_add1_attr_by_NID(&key->attributes, nid,
231 type, bytes, len)) return 1;
232 return 0;
233 }
234
235 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
236 const char *attrname, int type,
237 const unsigned char *bytes, int len)
238 {
239 if(X509at_add1_attr_by_txt(&key->attributes, attrname,
240 type, bytes, len)) return 1;
241 return 0;
242 }