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| 1 | +<?php |
| 2 | + |
| 3 | +/* |
| 4 | +Copyright (c) 2024, Till Brehm, ISPConfig UG |
| 5 | +All rights reserved. |
| 6 | +
|
| 7 | +Redistribution and use in source and binary forms, with or without modification, |
| 8 | +are permitted provided that the following conditions are met: |
| 9 | +
|
| 10 | + * Redistributions of source code must retain the above copyright notice, |
| 11 | + this list of conditions and the following disclaimer. |
| 12 | + * Redistributions in binary form must reproduce the above copyright notice, |
| 13 | + this list of conditions and the following disclaimer in the documentation |
| 14 | + and/or other materials provided with the distribution. |
| 15 | + * Neither the name of ISPConfig nor the names of its contributors |
| 16 | + may be used to endorse or promote products derived from this software without |
| 17 | + specific prior written permission. |
| 18 | +
|
| 19 | +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 20 | +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 21 | +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | +IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| 23 | +INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 26 | +OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 27 | +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| 28 | +EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | +*/ |
| 30 | + |
| 31 | +class crypt { |
| 32 | + |
| 33 | + /** |
| 34 | + * Encode passwords for PostgreSQL with scram-sha-256 |
| 35 | + * |
| 36 | + * @param mixed $password |
| 37 | + * @return string |
| 38 | + */ |
| 39 | + |
| 40 | + public function postgres_scram_sha_256($password) { |
| 41 | + $salt = openssl_random_pseudo_bytes(16); // Salt size = 16 |
| 42 | + $digest_key = hash_pbkdf2("sha256", $password, $salt, 4096, 32, true); // Rounds 4096 and Digest length = 32 |
| 43 | + $client_key = hash_hmac("sha256", 'Client Key', $digest_key, true); |
| 44 | + $stored_key = hash("sha256", $client_key, true); |
| 45 | + $server_key = hash_hmac("sha256", 'Server Key', $digest_key, true); |
| 46 | + return sprintf('SCRAM-SHA-256$4096:%s$%s:%s', base64_encode($salt), base64_encode($stored_key), base64_encode($server_key)); |
| 47 | + } |
| 48 | + |
| 49 | +} |
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