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
59
60#include <stdio.h>
61#include "cryptlib.h"
62#include <openssl/x509v3.h>
63
64static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
65const X509V3_EXT_METHOD v3_skey_id = {
66NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
670,0,0,0,
68(X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
69(X509V3_EXT_S2I)s2i_skey_id,
700,0,0,0,
71NULL};
72
73char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
74	     ASN1_OCTET_STRING *oct)
75{
76	return hex_to_string(oct->data, oct->length);
77}
78
79ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
80	     X509V3_CTX *ctx, char *str)
81{
82	ASN1_OCTET_STRING *oct;
83	long length;
84
85	if(!(oct = M_ASN1_OCTET_STRING_new())) {
86		X509V3err(X509V3_F_S2I_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE);
87		return NULL;
88	}
89
90	if(!(oct->data = string_to_hex(str, &length))) {
91		M_ASN1_OCTET_STRING_free(oct);
92		return NULL;
93	}
94
95	oct->length = length;
96
97	return oct;
98
99}
100
101static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
102	     X509V3_CTX *ctx, char *str)
103{
104	ASN1_OCTET_STRING *oct;
105	ASN1_BIT_STRING *pk;
106	unsigned char pkey_dig[EVP_MAX_MD_SIZE];
107	unsigned int diglen;
108
109	if(strcmp(str, "hash")) return s2i_ASN1_OCTET_STRING(method, ctx, str);
110
111	if(!(oct = M_ASN1_OCTET_STRING_new())) {
112		X509V3err(X509V3_F_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
113		return NULL;
114	}
115
116	if(ctx && (ctx->flags == CTX_TEST)) return oct;
117
118	if(!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
119		X509V3err(X509V3_F_S2I_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
120		goto err;
121	}
122
123	if(ctx->subject_req)
124		pk = ctx->subject_req->req_info->pubkey->public_key;
125	else pk = ctx->subject_cert->cert_info->key->public_key;
126
127	if(!pk) {
128		X509V3err(X509V3_F_S2I_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
129		goto err;
130	}
131
132	EVP_Digest(pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL);
133
134	if(!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
135		X509V3err(X509V3_F_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
136		goto err;
137	}
138
139	return oct;
140
141	err:
142	M_ASN1_OCTET_STRING_free(oct);
143	return NULL;
144}
145