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
|
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <stdio.h>
#include <openssl/err.h>
#include <openssl/opensslv.h>
#include <isc/iterated_hash.h>
#include <isc/util.h>
#if OPENSSL_VERSION_NUMBER < 0x30000000L || OPENSSL_API_LEVEL < 30000
#include <openssl/sha.h>
int
isc_iterated_hash(unsigned char *out, const unsigned int hashalg,
const int iterations, const unsigned char *salt,
const int saltlength, const unsigned char *in,
const int inlength) {
REQUIRE(out != NULL);
int n = 0;
size_t len;
const unsigned char *buf;
SHA_CTX ctx;
if (hashalg != 1) {
return (0);
}
buf = in;
len = inlength;
do {
if (SHA1_Init(&ctx) != 1) {
ERR_clear_error();
return (0);
}
if (SHA1_Update(&ctx, buf, len) != 1) {
ERR_clear_error();
return (0);
}
if (SHA1_Update(&ctx, salt, saltlength) != 1) {
ERR_clear_error();
return (0);
}
if (SHA1_Final(out, &ctx) != 1) {
ERR_clear_error();
return (0);
}
buf = out;
len = SHA_DIGEST_LENGTH;
} while (n++ < iterations);
return (SHA_DIGEST_LENGTH);
}
#else
#include <openssl/evp.h>
#include <isc/md.h>
int
isc_iterated_hash(unsigned char *out, const unsigned int hashalg,
const int iterations, const unsigned char *salt,
const int saltlength, const unsigned char *in,
const int inlength) {
REQUIRE(out != NULL);
int n = 0;
size_t len;
unsigned int outlength = 0;
const unsigned char *buf;
EVP_MD_CTX *ctx;
;
EVP_MD *md;
if (hashalg != 1) {
return (0);
}
ctx = EVP_MD_CTX_new();
RUNTIME_CHECK(ctx != NULL);
md = EVP_MD_fetch(NULL, "SHA1", NULL);
RUNTIME_CHECK(md != NULL);
buf = in;
len = inlength;
do {
if (EVP_DigestInit_ex(ctx, md, NULL) != 1) {
goto fail;
}
if (EVP_DigestUpdate(ctx, buf, len) != 1) {
goto fail;
}
if (EVP_DigestUpdate(ctx, salt, saltlength) != 1) {
goto fail;
}
if (EVP_DigestFinal_ex(ctx, out, &outlength) != 1) {
goto fail;
}
buf = out;
len = outlength;
} while (n++ < iterations);
EVP_MD_CTX_free(ctx);
EVP_MD_free(md);
return (outlength);
fail:
EVP_MD_CTX_free(ctx);
EVP_MD_free(md);
ERR_clear_error();
return (0);
}
#endif
|
