/src/libressl/crypto/ecdsa/ecs_vrf.c
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1 | | /* $OpenBSD: ecs_vrf.c,v 1.9 2022/01/27 20:30:29 tb Exp $ */ |
2 | | /* |
3 | | * Written by Nils Larsch for the OpenSSL project |
4 | | */ |
5 | | /* ==================================================================== |
6 | | * Copyright (c) 1998-2002 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 | | * openssl-core@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 | | #include <openssl/opensslconf.h> |
60 | | |
61 | | #ifndef OPENSSL_NO_ENGINE |
62 | | #include <openssl/engine.h> |
63 | | #endif |
64 | | #include <openssl/err.h> |
65 | | #include <openssl/evp.h> |
66 | | |
67 | | #include "bn_lcl.h" |
68 | | #include "ecs_locl.h" |
69 | | #include "ec_lcl.h" |
70 | | |
71 | | /* returns |
72 | | * 1: correct signature |
73 | | * 0: incorrect signature |
74 | | * -1: error |
75 | | */ |
76 | | int |
77 | | ECDSA_do_verify(const unsigned char *dgst, int dgst_len, const ECDSA_SIG *sig, |
78 | | EC_KEY *eckey) |
79 | 0 | { |
80 | 0 | if (eckey->meth->verify_sig != NULL) |
81 | 0 | return eckey->meth->verify_sig(dgst, dgst_len, sig, eckey); |
82 | 0 | ECDSAerror(EVP_R_METHOD_NOT_SUPPORTED); |
83 | 0 | return 0; |
84 | 0 | } |
85 | | |
86 | | /* returns |
87 | | * 1: correct signature |
88 | | * 0: incorrect signature |
89 | | * -1: error |
90 | | */ |
91 | | int |
92 | | ECDSA_verify(int type, const unsigned char *dgst, int dgst_len, |
93 | | const unsigned char *sigbuf, int sig_len, EC_KEY *eckey) |
94 | 0 | { |
95 | 0 | if (eckey->meth->verify != NULL) |
96 | 0 | return eckey->meth->verify(type, dgst, dgst_len, |
97 | 0 | sigbuf, sig_len, eckey); |
98 | 0 | ECDSAerror(EVP_R_METHOD_NOT_SUPPORTED); |
99 | 0 | return 0; |
100 | 0 | } |