OpenCoverage

ecs_vrf.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/ecdsa/ecs_vrf.c
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1/* $OpenBSD: ecs_vrf.c,v 1.6 2017/05/02 03:59:44 deraadt 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 <string.h>-
60#include <openssl/opensslconf.h>-
61-
62#include "ecs_locl.h"-
63#ifndef OPENSSL_NO_ENGINE-
64#include <openssl/engine.h>-
65#endif-
66-
67/* returns-
68 * 1: correct signature-
69 * 0: incorrect signature-
70 * -1: error-
71 */-
72int-
73ECDSA_do_verify(const unsigned char *dgst, int dgst_len, const ECDSA_SIG *sig,-
74 EC_KEY *eckey)-
75{-
76 ECDSA_DATA *ecdsa = ecdsa_check(eckey);-
77-
78 if (ecdsa == NULL)
ecdsa == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 380 times by 1 test
Evaluated by:
  • ecdsatest
0-380
79 return 0;
never executed: return 0;
0
80 return ecdsa->meth->ecdsa_do_verify(dgst, dgst_len, sig, eckey);
executed 380 times by 1 test: return ecdsa->meth->ecdsa_do_verify(dgst, dgst_len, sig, eckey);
Executed by:
  • ecdsatest
380
81}-
82-
83/* returns-
84 * 1: correct signature-
85 * 0: incorrect signature-
86 * -1: error-
87 */-
88int-
89ECDSA_verify(int type, const unsigned char *dgst, int dgst_len,-
90 const unsigned char *sigbuf, int sig_len, EC_KEY *eckey)-
91{-
92 ECDSA_SIG *s;-
93 unsigned char *der = NULL;-
94 const unsigned char *p = sigbuf;-
95 int derlen = -1;-
96 int ret = -1;-
97-
98 s = ECDSA_SIG_new();-
99 if (s == NULL)
s == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 456 times by 1 test
Evaluated by:
  • ecdsatest
0-456
100 return (ret);
never executed: return (ret);
0
101 if (d2i_ECDSA_SIG(&s, &p, sig_len) == NULL)
d2i_ECDSA_SIG(...== ((void *)0)Description
TRUEevaluated 76 times by 1 test
Evaluated by:
  • ecdsatest
FALSEevaluated 380 times by 1 test
Evaluated by:
  • ecdsatest
76-380
102 goto err;
executed 76 times by 1 test: goto err;
Executed by:
  • ecdsatest
76
103 /* Ensure signature uses DER and doesn't have trailing garbage */-
104 derlen = i2d_ECDSA_SIG(s, &der);-
105 if (derlen != sig_len || memcmp(sigbuf, der, derlen))
derlen != sig_lenDescription
TRUEnever evaluated
FALSEevaluated 380 times by 1 test
Evaluated by:
  • ecdsatest
memcmp(sigbuf, der, derlen)Description
TRUEnever evaluated
FALSEevaluated 380 times by 1 test
Evaluated by:
  • ecdsatest
0-380
106 goto err;
never executed: goto err;
0
107 ret = ECDSA_do_verify(dgst, dgst_len, s, eckey);-
108-
109err:
code before this statement executed 380 times by 1 test: err:
Executed by:
  • ecdsatest
380
110 freezero(der, derlen);-
111 ECDSA_SIG_free(s);-
112 return (ret);
executed 456 times by 1 test: return (ret);
Executed by:
  • ecdsatest
456
113}-
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