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#include "internal.h"
67
68
69static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
70 X509V3_CTX *ctx, char *str);
71const X509V3_EXT_METHOD v3_skey_id = {
72 NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
73 0, 0, 0, 0,
74 (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
75 (X509V3_EXT_S2I)s2i_skey_id,
76 0, 0, 0, 0,
77 NULL
78};
79
80char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct)
81{
82 return x509v3_bytes_to_hex(oct->data, oct->length);
83}
84
85ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
86 X509V3_CTX *ctx, char *str)
87{
88 ASN1_OCTET_STRING *oct;
89 long length;
90
91 if (!(oct = M_ASN1_OCTET_STRING_new())) {
92 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
93 return NULL;
94 }
95
96 if (!(oct->data = x509v3_hex_to_bytes(str, &length))) {
97 M_ASN1_OCTET_STRING_free(oct);
98 return NULL;
99 }
100
101 oct->length = length;
102
103 return oct;
104
105}
106
107static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
108 X509V3_CTX *ctx, char *str)
109{
110 ASN1_OCTET_STRING *oct;
111 ASN1_BIT_STRING *pk;
112 unsigned char pkey_dig[EVP_MAX_MD_SIZE];
113 unsigned int diglen;
114
115 if (strcmp(str, "hash"))
116 return s2i_ASN1_OCTET_STRING(method, ctx, str);
117
118 if (!(oct = M_ASN1_OCTET_STRING_new())) {
119 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
120 return NULL;
121 }
122
123 if (ctx && (ctx->flags == CTX_TEST))
124 return oct;
125
126 if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
127 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
128 goto err;
129 }
130
131 if (ctx->subject_req)
132 pk = ctx->subject_req->req_info->pubkey->public_key;
133 else
134 pk = ctx->subject_cert->cert_info->key->public_key;
135
136 if (!pk) {
137 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
138 goto err;
139 }
140
141 if (!EVP_Digest
142 (pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
143 goto err;
144
145 if (!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
146 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
147 goto err;
148 }
149
150 return oct;
151
152 err:
153 M_ASN1_OCTET_STRING_free(oct);
154 return NULL;
155}
156