1 /* v3_skey.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999 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
60 #include <stdio.h>
61 #include "cryptlib.h"
62 #include <openssl/x509v3.h>
63
64 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
65 const X509V3_EXT_METHOD v3_skey_id = {
66 NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
67 0,0,0,0,
68 (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
69 (X509V3_EXT_S2I)s2i_skey_id,
70 0,0,0,0,
71 NULL};
72
73 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
74 ASN1_OCTET_STRING *oct)
75 {
76 return hex_to_string(oct->data, oct->length);
77 }
78
79 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
80 X509V3_CTX *ctx, char *str)
81 {
82 ASN1_OCTET_STRING *oct;
83 long length;
84
85 if(!(oct = M_ASN1_OCTET_STRING_new())) {
86 X509V3err(X509V3_F_S2I_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE);
87 return NULL;
88 }
89
90 if(!(oct->data = string_to_hex(str, &length))) {
91 M_ASN1_OCTET_STRING_free(oct);
92 return NULL;
93 }
94
95 oct->length = length;
96
97 return oct;
98
99 }
100
101 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
102 X509V3_CTX *ctx, char *str)
103 {
104 ASN1_OCTET_STRING *oct;
105 ASN1_BIT_STRING *pk;
106 unsigned char pkey_dig[EVP_MAX_MD_SIZE];
107 unsigned int diglen;
108
109 if(strcmp(str, "hash")) return s2i_ASN1_OCTET_STRING(method, ctx, str);
110
111 if(!(oct = M_ASN1_OCTET_STRING_new())) {
112 X509V3err(X509V3_F_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
113 return NULL;
114 }
115
116 if(ctx && (ctx->flags == CTX_TEST)) return oct;
117
118 if(!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
119 X509V3err(X509V3_F_S2I_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
120 goto err;
121 }
122
123 if(ctx->subject_req)
124 pk = ctx->subject_req->req_info->pubkey->public_key;
125 else pk = ctx->subject_cert->cert_info->key->public_key;
126
127 if(!pk) {
128 X509V3err(X509V3_F_S2I_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
129 goto err;
130 }
131
132 if (!EVP_Digest(pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
133 goto err;
134
135 if(!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
136 X509V3err(X509V3_F_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
137 goto err;
138 }
139
140 return oct;
141
142 err:
143 M_ASN1_OCTET_STRING_free(oct);
144 return NULL;
145 }