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 #include <stdio.h>
59
60 #include <openssl/digest.h>
61 #include <openssl/err.h>
62 #include <openssl/obj.h>
63 #include <openssl/x509v3.h>
64
65
66 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
67 const X509V3_EXT_METHOD v3_skey_id = {
68 NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
69 0,0,0,0,
70 (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
71 (X509V3_EXT_S2I)s2i_skey_id,
72 0,0,0,0,
73 NULL};
74
i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD * method,ASN1_OCTET_STRING * oct)75 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
76 ASN1_OCTET_STRING *oct)
77 {
78 return hex_to_string(oct->data, oct->length);
79 }
80
s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,char * str)81 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
82 X509V3_CTX *ctx, char *str)
83 {
84 ASN1_OCTET_STRING *oct;
85 long length;
86
87 if(!(oct = M_ASN1_OCTET_STRING_new())) {
88 OPENSSL_PUT_ERROR(X509V3, s2i_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
89 return NULL;
90 }
91
92 if(!(oct->data = string_to_hex(str, &length))) {
93 M_ASN1_OCTET_STRING_free(oct);
94 return NULL;
95 }
96
97 oct->length = length;
98
99 return oct;
100
101 }
102
s2i_skey_id(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,char * str)103 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
104 X509V3_CTX *ctx, char *str)
105 {
106 ASN1_OCTET_STRING *oct;
107 ASN1_BIT_STRING *pk;
108 unsigned char pkey_dig[EVP_MAX_MD_SIZE];
109 unsigned int diglen;
110
111 if(strcmp(str, "hash")) return s2i_ASN1_OCTET_STRING(method, ctx, str);
112
113 if(!(oct = M_ASN1_OCTET_STRING_new())) {
114 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, ERR_R_MALLOC_FAILURE);
115 return NULL;
116 }
117
118 if(ctx && (ctx->flags == CTX_TEST)) return oct;
119
120 if(!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
121 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, X509V3_R_NO_PUBLIC_KEY);
122 goto err;
123 }
124
125 if(ctx->subject_req)
126 pk = ctx->subject_req->req_info->pubkey->public_key;
127 else pk = ctx->subject_cert->cert_info->key->public_key;
128
129 if(!pk) {
130 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, X509V3_R_NO_PUBLIC_KEY);
131 goto err;
132 }
133
134 if (!EVP_Digest(pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
135 goto err;
136
137 if(!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
138 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, ERR_R_MALLOC_FAILURE);
139 goto err;
140 }
141
142 return oct;
143
144 err:
145 M_ASN1_OCTET_STRING_free(oct);
146 return NULL;
147 }
148