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<?php |
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declare(strict_types=1); |
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/** |
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* Sasl library. |
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* |
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* Copyright (c) 2002-2003 Richard Heyes, |
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* 2014-2025 Fabian Grutschus |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* o Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* o Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution.| |
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* o The names of the authors may not be used to endorse or promote |
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* products derived from this software without specific prior written |
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* permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* @author Richard Heyes <[email protected]> |
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*/ |
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namespace Fabiang\SASL\Authentication; |
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use Fabiang\SASL\Authentication\AbstractAuthentication; |
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/** |
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* Implmentation of CRAM-MD5 SASL mechanism |
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* |
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* @author Richard Heyes <[email protected]> |
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*/ |
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class CramMD5 extends AbstractAuthentication implements ChallengeAuthenticationInterface |
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{ |
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/** |
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* Implements the CRAM-MD5 SASL mechanism |
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* This DOES NOT base64 encode the return value, |
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* you will need to do that yourself. |
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* |
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* @param string|null $challenge The challenge supplied by the server. |
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* this should be already base64_decoded. |
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* |
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* @return string|false The string to pass back to the server, of the form |
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* "<user> <digest>". This is NOT base64_encoded. |
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*/ |
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public function createResponse(?string $challenge = null): string|false |
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{ |
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$authcid = $this->options->getAuthcid(); |
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$secret = $this->options->getSecret(); |
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if ($authcid === null || $secret === null || $challenge === null |
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|| $authcid === '' || $secret === '' || $challenge === '') { |
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return false; |
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} |
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return $authcid . ' ' . hash_hmac('md5', $challenge, $secret); |
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} |
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} |
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fabiang /
sasl
