| commit | author | age | ||
| 627330 | 1 | <?php |
| T | 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 $data The data to protect | |
| 53 | * @return string The HMAC MD5 digest | |
| 54 | */ | |
| 55 | function _HMAC_MD5($key, $data) | |
| 56 | { | |
| 57 | if (strlen($key) > 64) { | |
| 58 | $key = pack('H32', md5($key)); | |
| 59 | } | |
| 60 | ||
| 61 | if (strlen($key) < 64) { | |
| 62 | $key = str_pad($key, 64, chr(0)); | |
| 63 | } | |
| 64 | ||
| 65 | $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64); | |
| 66 | $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64); | |
| 67 | ||
| 68 | $inner = pack('H32', md5($k_ipad . $data)); | |
| 69 | $digest = md5($k_opad . $inner); | |
| 70 | ||
| 71 | return $digest; | |
| 72 | } | |
| 73 | } | |
| 74 | ?> | |
