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
67static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
68const X509V3_EXT_METHOD v3_skey_id = {
69NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
700,0,0,0,
71(X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
72(X509V3_EXT_S2I)s2i_skey_id,
730,0,0,0,
74NULL};
75
76char *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
82ASN1_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
104static 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, 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, 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, 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, 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