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1 | <?php |
2 | |
3 | /** |
4 | * HMAC hash generator |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2007. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package Crypt |
25 | * @author Luke O'Sullivan <l.osullivan@swansea.ac.uk> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org/wiki/development Wiki |
28 | */ |
29 | |
30 | namespace VuFind\Crypt; |
31 | |
32 | /** |
33 | * HMAC hash generator wrapper |
34 | * |
35 | * @category VuFind |
36 | * @package Crypt |
37 | * @author Luke O'Sullivan <l.osullivan@swansea.ac.uk> |
38 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
39 | * @link https://vufind.org/wiki/development Wiki |
40 | */ |
41 | class HMAC |
42 | { |
43 | /** |
44 | * Hash key |
45 | * |
46 | * @var string |
47 | */ |
48 | protected $hashKey; |
49 | |
50 | /** |
51 | * Constructor |
52 | * |
53 | * @param string $key Hash key |
54 | */ |
55 | public function __construct($key) |
56 | { |
57 | $this->hashKey = $key; |
58 | } |
59 | |
60 | /** |
61 | * Accepts $keysToHash, a list of array keys, and $keyValueArray, a keyed array |
62 | * |
63 | * @param array $keysToHash A list of keys to hash |
64 | * @param array $keyValueArray A keyed array |
65 | * |
66 | * @return string A hash_hmac string using md5 |
67 | */ |
68 | public function generate($keysToHash, $keyValueArray) |
69 | { |
70 | $str = ''; |
71 | foreach ($keysToHash as $key) { |
72 | $value = $keyValueArray[$key] ?? ''; |
73 | $str .= $key . '=' . $value . '|'; |
74 | } |
75 | return hash_hmac('md5', $str, $this->hashKey); |
76 | } |
77 | } |