1 /* $OpenBSD: ecs_asn1.c,v 1.11 2022/09/03 16:01:23 jsing Exp $ */
2 /* ====================================================================
3 * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56 #include "ecs_locl.h"
57 #include <openssl/err.h>
58 #include <openssl/asn1t.h>
59
60 static const ASN1_TEMPLATE ECDSA_SIG_seq_tt[] = {
61 {
62 .flags = 0,
63 .tag = 0,
64 .offset = offsetof(ECDSA_SIG, r),
65 .field_name = "r",
66 .item = &BIGNUM_it,
67 },
68 {
69 .flags = 0,
70 .tag = 0,
71 .offset = offsetof(ECDSA_SIG, s),
72 .field_name = "s",
73 .item = &BIGNUM_it,
74 },
75 };
76
77 const ASN1_ITEM ECDSA_SIG_it = {
78 .itype = ASN1_ITYPE_SEQUENCE,
79 .utype = V_ASN1_SEQUENCE,
80 .templates = ECDSA_SIG_seq_tt,
81 .tcount = sizeof(ECDSA_SIG_seq_tt) / sizeof(ASN1_TEMPLATE),
82 .funcs = NULL,
83 .size = sizeof(ECDSA_SIG),
84 .sname = "ECDSA_SIG",
85 };
86
87 ECDSA_SIG *ECDSA_SIG_new(void);
88 void ECDSA_SIG_free(ECDSA_SIG *a);
89 ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **a, const unsigned char **in, long len);
90 int i2d_ECDSA_SIG(const ECDSA_SIG *a, unsigned char **out);
91
92 ECDSA_SIG *
d2i_ECDSA_SIG(ECDSA_SIG ** a,const unsigned char ** in,long len)93 d2i_ECDSA_SIG(ECDSA_SIG **a, const unsigned char **in, long len)
94 {
95 return (ECDSA_SIG *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
96 &ECDSA_SIG_it);
97 }
98
99 int
i2d_ECDSA_SIG(const ECDSA_SIG * a,unsigned char ** out)100 i2d_ECDSA_SIG(const ECDSA_SIG *a, unsigned char **out)
101 {
102 return ASN1_item_i2d((ASN1_VALUE *)a, out, &ECDSA_SIG_it);
103 }
104
105 ECDSA_SIG *
ECDSA_SIG_new(void)106 ECDSA_SIG_new(void)
107 {
108 return (ECDSA_SIG *)ASN1_item_new(&ECDSA_SIG_it);
109 }
110
111 void
ECDSA_SIG_free(ECDSA_SIG * a)112 ECDSA_SIG_free(ECDSA_SIG *a)
113 {
114 ASN1_item_free((ASN1_VALUE *)a, &ECDSA_SIG_it);
115 }
116
117 void
ECDSA_SIG_get0(const ECDSA_SIG * sig,const BIGNUM ** pr,const BIGNUM ** ps)118 ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
119 {
120 if (pr != NULL)
121 *pr = sig->r;
122 if (ps != NULL)
123 *ps = sig->s;
124 }
125
126 const BIGNUM *
ECDSA_SIG_get0_r(const ECDSA_SIG * sig)127 ECDSA_SIG_get0_r(const ECDSA_SIG *sig)
128 {
129 return sig->r;
130 }
131
132 const BIGNUM *
ECDSA_SIG_get0_s(const ECDSA_SIG * sig)133 ECDSA_SIG_get0_s(const ECDSA_SIG *sig)
134 {
135 return sig->s;
136 }
137
138 int
ECDSA_SIG_set0(ECDSA_SIG * sig,BIGNUM * r,BIGNUM * s)139 ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
140 {
141 if (r == NULL || s == NULL)
142 return 0;
143
144 BN_clear_free(sig->r);
145 BN_clear_free(sig->s);
146 sig->r = r;
147 sig->s = s;
148 return 1;
149 }
150