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 #include <string.h>
60
61 #include <openssl/digest.h>
62 #include <openssl/err.h>
63 #include <openssl/obj.h>
64 #include <openssl/x509v3.h>
65
66
67 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
68 const X509V3_EXT_METHOD v3_skey_id = {
69 NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
70 0,0,0,0,
71 (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
72 (X509V3_EXT_S2I)s2i_skey_id,
73 0,0,0,0,
74 NULL};
75
i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD * method,ASN1_OCTET_STRING * oct)76 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
77 ASN1_OCTET_STRING *oct)
78 {
79 return hex_to_string(oct->data, oct->length);
80 }
81
s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,char * str)82 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
83 X509V3_CTX *ctx, char *str)
84 {
85 ASN1_OCTET_STRING *oct;
86 long length;
87
88 if(!(oct = M_ASN1_OCTET_STRING_new())) {
89 OPENSSL_PUT_ERROR(X509V3, s2i_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
90 return NULL;
91 }
92
93 if(!(oct->data = string_to_hex(str, &length))) {
94 M_ASN1_OCTET_STRING_free(oct);
95 return NULL;
96 }
97
98 oct->length = length;
99
100 return oct;
101
102 }
103
s2i_skey_id(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,char * str)104 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
105 X509V3_CTX *ctx, char *str)
106 {
107 ASN1_OCTET_STRING *oct;
108 ASN1_BIT_STRING *pk;
109 unsigned char pkey_dig[EVP_MAX_MD_SIZE];
110 unsigned int diglen;
111
112 if(strcmp(str, "hash")) return s2i_ASN1_OCTET_STRING(method, ctx, str);
113
114 if(!(oct = M_ASN1_OCTET_STRING_new())) {
115 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, ERR_R_MALLOC_FAILURE);
116 return NULL;
117 }
118
119 if(ctx && (ctx->flags == CTX_TEST)) return oct;
120
121 if(!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
122 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, X509V3_R_NO_PUBLIC_KEY);
123 goto err;
124 }
125
126 if(ctx->subject_req)
127 pk = ctx->subject_req->req_info->pubkey->public_key;
128 else pk = ctx->subject_cert->cert_info->key->public_key;
129
130 if(!pk) {
131 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, X509V3_R_NO_PUBLIC_KEY);
132 goto err;
133 }
134
135 if (!EVP_Digest(pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
136 goto err;
137
138 if(!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
139 OPENSSL_PUT_ERROR(X509V3, s2i_skey_id, ERR_R_MALLOC_FAILURE);
140 goto err;
141 }
142
143 return oct;
144
145 err:
146 M_ASN1_OCTET_STRING_free(oct);
147 return NULL;
148 }
149