Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
100.00% |
11 / 11 |
|
100.00% |
6 / 6 |
CRAP | |
100.00% |
1 / 1 |
| PasswordHasher | |
100.00% |
11 / 11 |
|
100.00% |
6 / 6 |
8 | |
100.00% |
1 / 1 |
| __construct | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| hash | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| verify | |
100.00% |
3 / 3 |
|
100.00% |
1 / 1 |
2 | |||
| needsRehash | |
100.00% |
3 / 3 |
|
100.00% |
1 / 1 |
2 | |||
| isLegacyHash | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| legacyHash | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Password hashing and verification for database authentication. |
| 5 | * |
| 6 | * Writes bcrypt hashes and verifies both bcrypt and legacy salted SHA-256 |
| 7 | * hashes, enabling transparent migration of legacy passwords on login. |
| 8 | * |
| 9 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 10 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 11 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 12 | * |
| 13 | * @package phpMyFAQ |
| 14 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 15 | * @copyright 2026 phpMyFAQ Team |
| 16 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 17 | * @link https://www.phpmyfaq.de |
| 18 | */ |
| 19 | |
| 20 | declare(strict_types=1); |
| 21 | |
| 22 | namespace phpMyFAQ\Auth; |
| 23 | |
| 24 | use phpMyFAQ\Configuration; |
| 25 | use SensitiveParameter; |
| 26 | |
| 27 | final class PasswordHasher |
| 28 | { |
| 29 | public function __construct( |
| 30 | private readonly Configuration $configuration, |
| 31 | ) { |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * Hashes a password for storage using bcrypt. |
| 36 | */ |
| 37 | public function hash(#[SensitiveParameter] string $password): string |
| 38 | { |
| 39 | return password_hash($password, PASSWORD_BCRYPT); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Verifies a password against a stored hash, accepting both bcrypt and |
| 44 | * legacy salted SHA-256 hashes. |
| 45 | */ |
| 46 | public function verify(string $login, #[SensitiveParameter] string $password, string $storedHash): bool |
| 47 | { |
| 48 | if ($this->isLegacyHash($storedHash)) { |
| 49 | return hash_equals($storedHash, $this->legacyHash($login, $password)); |
| 50 | } |
| 51 | |
| 52 | return password_verify($password, $storedHash); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Returns true when the stored hash should be upgraded to current bcrypt |
| 57 | * parameters (legacy SHA-256, or bcrypt with outdated cost). |
| 58 | */ |
| 59 | public function needsRehash(string $storedHash): bool |
| 60 | { |
| 61 | if ($this->isLegacyHash($storedHash)) { |
| 62 | return true; |
| 63 | } |
| 64 | |
| 65 | return password_needs_rehash($storedHash, PASSWORD_BCRYPT); |
| 66 | } |
| 67 | |
| 68 | private function isLegacyHash(string $storedHash): bool |
| 69 | { |
| 70 | // password_get_info() reports algo === null for non-PHC strings, |
| 71 | // i.e. the 64-char salted SHA-256 hex hashes produced by the old scheme. |
| 72 | return password_get_info($storedHash)['algo'] === null; |
| 73 | } |
| 74 | |
| 75 | private function legacyHash(string $login, #[SensitiveParameter] string $password): string |
| 76 | { |
| 77 | $salt = (string) $this->configuration->get('security.salt') . $login; |
| 78 | return hash('sha256', $password . $salt); |
| 79 | } |
| 80 | } |