1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2013-2021 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#include <stdlib.h>
#include <errno.h>
#if defined(HAVE_WOLFSSL)
# include <wolfssl/options.h>
#endif
#include <openssl/evp.h>
#include "sudo_compat.h"
#include "sudo_debug.h"
#include "sudo_digest.h"
struct sudo_digest {
EVP_MD_CTX *ctx;
const EVP_MD *md;
};
static const EVP_MD *
sudo_digest_type_to_md(int digest_type)
{
const EVP_MD *md = NULL;
debug_decl(sudo_digest_type_to_md, SUDO_DEBUG_UTIL);
switch (digest_type) {
case SUDO_DIGEST_SHA224:
md = EVP_sha224();
break;
case SUDO_DIGEST_SHA256:
md = EVP_sha256();
break;
case SUDO_DIGEST_SHA384:
md = EVP_sha384();
break;
case SUDO_DIGEST_SHA512:
md = EVP_sha512();
break;
default:
errno = EINVAL;
break;
}
debug_return_const_ptr(md);
}
struct sudo_digest *
sudo_digest_alloc_v1(int digest_type)
{
struct sudo_digest *dig;
EVP_MD_CTX *mdctx = NULL;
const EVP_MD *md;
debug_decl(sudo_digest_alloc, SUDO_DEBUG_UTIL);
md = sudo_digest_type_to_md(digest_type);
if (md == NULL)
goto bad;
mdctx = EVP_MD_CTX_new();
if (mdctx == NULL || !EVP_DigestInit_ex(mdctx, md, NULL))
goto bad;
if ((dig = malloc(sizeof(*dig))) == NULL)
goto bad;
dig->md = md;
dig->ctx = mdctx;
debug_return_ptr(dig);
bad:
EVP_MD_CTX_free(mdctx);
debug_return_ptr(NULL);
}
void
sudo_digest_free_v1(struct sudo_digest *dig)
{
debug_decl(sudo_digest_free, SUDO_DEBUG_UTIL);
if (dig != NULL) {
EVP_MD_CTX_free(dig->ctx);
free(dig);
}
debug_return;
}
void
sudo_digest_reset_v1(struct sudo_digest *dig)
{
debug_decl(sudo_digest_reset, SUDO_DEBUG_UTIL);
/* These cannot fail. */
EVP_MD_CTX_reset(dig->ctx);
EVP_DigestInit_ex(dig->ctx, dig->md, NULL);
debug_return;
}
int
sudo_digest_getlen_v1(int digest_type)
{
const EVP_MD *md;
debug_decl(sudo_digest_getlen, SUDO_DEBUG_UTIL);
md = sudo_digest_type_to_md(digest_type);
if (md == NULL)
debug_return_int(-1);
debug_return_int(EVP_MD_size(md));
}
void
sudo_digest_update_v1(struct sudo_digest *dig, const void *data, size_t len)
{
debug_decl(sudo_digest_update, SUDO_DEBUG_UTIL);
EVP_DigestUpdate(dig->ctx, data, len);
debug_return;
}
void
sudo_digest_final_v1(struct sudo_digest *dig, unsigned char *md)
{
debug_decl(sudo_digest_final, SUDO_DEBUG_UTIL);
EVP_DigestFinal_ex(dig->ctx, md, NULL);
debug_return;
}
|
