1 /* $OpenBSD: evp_pkey.c,v 1.28 2024/04/09 13:55:02 beck Exp $ */
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
62 #include <openssl/err.h>
63 #include <openssl/x509.h>
64
65 #include "asn1_local.h"
66 #include "evp_local.h"
67
68 /* Extract a private key from a PKCS8 structure */
69
70 EVP_PKEY *
EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO * p8)71 EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8)
72 {
73 EVP_PKEY *pkey = NULL;
74 const ASN1_OBJECT *algoid;
75 char obj_tmp[80];
76
77 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
78 return NULL;
79
80 if (!(pkey = EVP_PKEY_new())) {
81 EVPerror(ERR_R_MALLOC_FAILURE);
82 return NULL;
83 }
84
85 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {
86 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
87 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
88 ERR_asprintf_error_data("TYPE=%s", obj_tmp);
89 goto error;
90 }
91
92 if (pkey->ameth->priv_decode) {
93 if (!pkey->ameth->priv_decode(pkey, p8)) {
94 EVPerror(EVP_R_PRIVATE_KEY_DECODE_ERROR);
95 goto error;
96 }
97 } else {
98 EVPerror(EVP_R_METHOD_NOT_SUPPORTED);
99 goto error;
100 }
101
102 return pkey;
103
104 error:
105 EVP_PKEY_free(pkey);
106 return NULL;
107 }
108 LCRYPTO_ALIAS(EVP_PKCS82PKEY);
109
110 /* Turn a private key into a PKCS8 structure */
111
112 PKCS8_PRIV_KEY_INFO *
EVP_PKEY2PKCS8(EVP_PKEY * pkey)113 EVP_PKEY2PKCS8(EVP_PKEY *pkey)
114 {
115 PKCS8_PRIV_KEY_INFO *p8;
116
117 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
118 EVPerror(ERR_R_MALLOC_FAILURE);
119 return NULL;
120 }
121
122 if (pkey->ameth) {
123 if (pkey->ameth->priv_encode) {
124 if (!pkey->ameth->priv_encode(p8, pkey)) {
125 EVPerror(EVP_R_PRIVATE_KEY_ENCODE_ERROR);
126 goto error;
127 }
128 } else {
129 EVPerror(EVP_R_METHOD_NOT_SUPPORTED);
130 goto error;
131 }
132 } else {
133 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
134 goto error;
135 }
136 return p8;
137
138 error:
139 PKCS8_PRIV_KEY_INFO_free(p8);
140 return NULL;
141 }
142 LCRYPTO_ALIAS(EVP_PKEY2PKCS8);
143
144 /* EVP_PKEY attribute functions */
145
146 int
EVP_PKEY_get_attr_count(const EVP_PKEY * key)147 EVP_PKEY_get_attr_count(const EVP_PKEY *key)
148 {
149 return X509at_get_attr_count(key->attributes);
150 }
151 LCRYPTO_ALIAS(EVP_PKEY_get_attr_count);
152
153 int
EVP_PKEY_get_attr_by_NID(const EVP_PKEY * key,int nid,int lastpos)154 EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos)
155 {
156 return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
157 }
158 LCRYPTO_ALIAS(EVP_PKEY_get_attr_by_NID);
159
160 int
EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY * key,const ASN1_OBJECT * obj,int lastpos)161 EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, const ASN1_OBJECT *obj,
162 int lastpos)
163 {
164 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
165 }
166 LCRYPTO_ALIAS(EVP_PKEY_get_attr_by_OBJ);
167
168 X509_ATTRIBUTE *
EVP_PKEY_get_attr(const EVP_PKEY * key,int loc)169 EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
170 {
171 return X509at_get_attr(key->attributes, loc);
172 }
173 LCRYPTO_ALIAS(EVP_PKEY_get_attr);
174
175 X509_ATTRIBUTE *
EVP_PKEY_delete_attr(EVP_PKEY * key,int loc)176 EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
177 {
178 return X509at_delete_attr(key->attributes, loc);
179 }
180 LCRYPTO_ALIAS(EVP_PKEY_delete_attr);
181
182 int
EVP_PKEY_add1_attr(EVP_PKEY * key,X509_ATTRIBUTE * attr)183 EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
184 {
185 if (X509at_add1_attr(&key->attributes, attr))
186 return 1;
187 return 0;
188 }
189 LCRYPTO_ALIAS(EVP_PKEY_add1_attr);
190
191 int
EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY * key,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)192 EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, const ASN1_OBJECT *obj, int type,
193 const unsigned char *bytes, int len)
194 {
195 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len))
196 return 1;
197 return 0;
198 }
199 LCRYPTO_ALIAS(EVP_PKEY_add1_attr_by_OBJ);
200
201 int
EVP_PKEY_add1_attr_by_NID(EVP_PKEY * key,int nid,int type,const unsigned char * bytes,int len)202 EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, int nid, int type,
203 const unsigned char *bytes, int len)
204 {
205 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len))
206 return 1;
207 return 0;
208 }
209 LCRYPTO_ALIAS(EVP_PKEY_add1_attr_by_NID);
210
211 int
EVP_PKEY_add1_attr_by_txt(EVP_PKEY * key,const char * attrname,int type,const unsigned char * bytes,int len)212 EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, const char *attrname, int type,
213 const unsigned char *bytes, int len)
214 {
215 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type,
216 bytes, len))
217 return 1;
218 return 0;
219 }
220 LCRYPTO_ALIAS(EVP_PKEY_add1_attr_by_txt);
221