1 /* $OpenBSD: evp_pkey.c,v 1.23 2018/08/24 20:26:03 tb 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_locl.h"
66
67 /* Extract a private key from a PKCS8 structure */
68
69 EVP_PKEY *
EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO * p8)70 EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8)
71 {
72 EVP_PKEY *pkey = NULL;
73 const ASN1_OBJECT *algoid;
74 char obj_tmp[80];
75
76 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
77 return NULL;
78
79 if (!(pkey = EVP_PKEY_new())) {
80 EVPerror(ERR_R_MALLOC_FAILURE);
81 return NULL;
82 }
83
84 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {
85 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
86 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
87 ERR_asprintf_error_data("TYPE=%s", obj_tmp);
88 goto error;
89 }
90
91 if (pkey->ameth->priv_decode) {
92 if (!pkey->ameth->priv_decode(pkey, p8)) {
93 EVPerror(EVP_R_PRIVATE_KEY_DECODE_ERROR);
94 goto error;
95 }
96 } else {
97 EVPerror(EVP_R_METHOD_NOT_SUPPORTED);
98 goto error;
99 }
100
101 return pkey;
102
103 error:
104 EVP_PKEY_free(pkey);
105 return NULL;
106 }
107
108 /* Turn a private key into a PKCS8 structure */
109
110 PKCS8_PRIV_KEY_INFO *
EVP_PKEY2PKCS8(EVP_PKEY * pkey)111 EVP_PKEY2PKCS8(EVP_PKEY *pkey)
112 {
113 PKCS8_PRIV_KEY_INFO *p8;
114
115 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
116 EVPerror(ERR_R_MALLOC_FAILURE);
117 return NULL;
118 }
119
120 if (pkey->ameth) {
121 if (pkey->ameth->priv_encode) {
122 if (!pkey->ameth->priv_encode(p8, pkey)) {
123 EVPerror(EVP_R_PRIVATE_KEY_ENCODE_ERROR);
124 goto error;
125 }
126 } else {
127 EVPerror(EVP_R_METHOD_NOT_SUPPORTED);
128 goto error;
129 }
130 } else {
131 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
132 goto error;
133 }
134 return p8;
135
136 error:
137 PKCS8_PRIV_KEY_INFO_free(p8);
138 return NULL;
139 }
140
141 /* EVP_PKEY attribute functions */
142
143 int
EVP_PKEY_get_attr_count(const EVP_PKEY * key)144 EVP_PKEY_get_attr_count(const EVP_PKEY *key)
145 {
146 return X509at_get_attr_count(key->attributes);
147 }
148
149 int
EVP_PKEY_get_attr_by_NID(const EVP_PKEY * key,int nid,int lastpos)150 EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos)
151 {
152 return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
153 }
154
155 int
EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY * key,const ASN1_OBJECT * obj,int lastpos)156 EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, const ASN1_OBJECT *obj,
157 int lastpos)
158 {
159 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
160 }
161
162 X509_ATTRIBUTE *
EVP_PKEY_get_attr(const EVP_PKEY * key,int loc)163 EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
164 {
165 return X509at_get_attr(key->attributes, loc);
166 }
167
168 X509_ATTRIBUTE *
EVP_PKEY_delete_attr(EVP_PKEY * key,int loc)169 EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
170 {
171 return X509at_delete_attr(key->attributes, loc);
172 }
173
174 int
EVP_PKEY_add1_attr(EVP_PKEY * key,X509_ATTRIBUTE * attr)175 EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
176 {
177 if (X509at_add1_attr(&key->attributes, attr))
178 return 1;
179 return 0;
180 }
181
182 int
EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY * key,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)183 EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, const ASN1_OBJECT *obj, int type,
184 const unsigned char *bytes, int len)
185 {
186 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len))
187 return 1;
188 return 0;
189 }
190
191 int
EVP_PKEY_add1_attr_by_NID(EVP_PKEY * key,int nid,int type,const unsigned char * bytes,int len)192 EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, int nid, int type,
193 const unsigned char *bytes, int len)
194 {
195 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len))
196 return 1;
197 return 0;
198 }
199
200 int
EVP_PKEY_add1_attr_by_txt(EVP_PKEY * key,const char * attrname,int type,const unsigned char * bytes,int len)201 EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, const char *attrname, int type,
202 const unsigned char *bytes, int len)
203 {
204 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type,
205 bytes, len))
206 return 1;
207 return 0;
208 }
209