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comparison vendor/pear/auth_sasl/Auth/SASL/Common.php @ 0:1e000243b222

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vanilla 1.3.3 distro, I hope
author Charlie Root
date Thu, 04 Jan 2018 15:50:29 -0500
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-1:000000000000 0:1e000243b222
1 <?php
2 // +-----------------------------------------------------------------------+
3 // | Copyright (c) 2002-2003 Richard Heyes |
4 // | All rights reserved. |
5 // | |
6 // | Redistribution and use in source and binary forms, with or without |
7 // | modification, are permitted provided that the following conditions |
8 // | are met: |
9 // | |
10 // | o Redistributions of source code must retain the above copyright |
11 // | notice, this list of conditions and the following disclaimer. |
12 // | o Redistributions in binary form must reproduce the above copyright |
13 // | notice, this list of conditions and the following disclaimer in the |
14 // | documentation and/or other materials provided with the distribution.|
15 // | o The names of the authors may not be used to endorse or promote |
16 // | products derived from this software without specific prior written |
17 // | permission. |
18 // | |
19 // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
20 // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
21 // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
22 // | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
23 // | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
24 // | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
25 // | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
26 // | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
27 // | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
28 // | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
29 // | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 // | |
31 // +-----------------------------------------------------------------------+
32 // | Author: Richard Heyes <richard@php.net> |
33 // +-----------------------------------------------------------------------+
34 //
35 // $Id$
36
37 /**
38 * Common functionality to SASL mechanisms
39 *
40 * @author Richard Heyes <richard@php.net>
41 * @access public
42 * @version 1.0
43 * @package Auth_SASL
44 */
45
46 class Auth_SASL_Common
47 {
48 /**
49 * Function which implements HMAC MD5 digest
50 *
51 * @param string $key The secret key
52 * @param string $data The data to hash
53 * @param bool $raw_output Whether the digest is returned in binary or hexadecimal format.
54 *
55 * @return string The HMAC-MD5 digest
56 */
57 function _HMAC_MD5($key, $data, $raw_output = FALSE)
58 {
59 if (strlen($key) > 64) {
60 $key = pack('H32', md5($key));
61 }
62
63 if (strlen($key) < 64) {
64 $key = str_pad($key, 64, chr(0));
65 }
66
67 $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64);
68 $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64);
69
70 $inner = pack('H32', md5($k_ipad . $data));
71 $digest = md5($k_opad . $inner, $raw_output);
72
73 return $digest;
74 }
75
76 /**
77 * Function which implements HMAC-SHA-1 digest
78 *
79 * @param string $key The secret key
80 * @param string $data The data to hash
81 * @param bool $raw_output Whether the digest is returned in binary or hexadecimal format.
82 * @return string The HMAC-SHA-1 digest
83 * @author Jehan <jehan.marmottard@gmail.com>
84 * @access protected
85 */
86 protected function _HMAC_SHA1($key, $data, $raw_output = FALSE)
87 {
88 if (strlen($key) > 64) {
89 $key = sha1($key, TRUE);
90 }
91
92 if (strlen($key) < 64) {
93 $key = str_pad($key, 64, chr(0));
94 }
95
96 $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64);
97 $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64);
98
99 $inner = pack('H40', sha1($k_ipad . $data));
100 $digest = sha1($k_opad . $inner, $raw_output);
101
102 return $digest;
103 }
104 }
105 ?>