1 /* v3_skey.c */
2 /*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 1999.
5 */
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com). */
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 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
67 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 };
76
i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD * method,ASN1_OCTET_STRING * oct)77 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, 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, 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"))
113 return s2i_ASN1_OCTET_STRING(method, ctx, str);
114
115 if (!(oct = M_ASN1_OCTET_STRING_new())) {
116 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
117 return NULL;
118 }
119
120 if (ctx && (ctx->flags == CTX_TEST))
121 return oct;
122
123 if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
124 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
125 goto err;
126 }
127
128 if (ctx->subject_req)
129 pk = ctx->subject_req->req_info->pubkey->public_key;
130 else
131 pk = ctx->subject_cert->cert_info->key->public_key;
132
133 if (!pk) {
134 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
135 goto err;
136 }
137
138 if (!EVP_Digest
139 (pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
140 goto err;
141
142 if (!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
143 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
144 goto err;
145 }
146
147 return oct;
148
149 err:
150 M_ASN1_OCTET_STRING_free(oct);
151 return NULL;
152 }
153