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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 827 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /** |
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| 4 | * Fingerprint Trait for Public Keys |
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| 5 | * |
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| 6 | * PHP version 5 |
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| 7 | * |
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| 874 | daniel-mar | 8 | * @category Crypt |
| 9 | * @package Common |
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| 827 | daniel-mar | 10 | * @author Jim Wigginton <terrafrost@php.net> |
| 11 | * @copyright 2015 Jim Wigginton |
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| 12 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
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| 13 | * @link http://phpseclib.sourceforge.net |
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| 14 | */ |
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| 15 | |||
| 16 | namespace phpseclib3\Crypt\Common\Traits; |
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| 17 | |||
| 18 | use phpseclib3\Crypt\Hash; |
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| 19 | |||
| 20 | /** |
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| 21 | * Fingerprint Trait for Private Keys |
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| 22 | * |
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| 874 | daniel-mar | 23 | * @package Common |
| 827 | daniel-mar | 24 | * @author Jim Wigginton <terrafrost@php.net> |
| 874 | daniel-mar | 25 | * @access public |
| 827 | daniel-mar | 26 | */ |
| 27 | trait Fingerprint |
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| 28 | { |
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| 29 | /** |
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| 30 | * Returns the public key's fingerprint |
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| 31 | * |
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| 32 | * The public key's fingerprint is returned, which is equivalent to running `ssh-keygen -lf rsa.pub`. If there is |
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| 33 | * no public key currently loaded, false is returned. |
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| 34 | * Example output (md5): "c1:b1:30:29:d7:b8:de:6c:97:77:10:d7:46:41:63:87" (as specified by RFC 4716) |
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| 35 | * |
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| 874 | daniel-mar | 36 | * @access public |
| 827 | daniel-mar | 37 | * @param string $algorithm The hashing algorithm to be used. Valid options are 'md5' and 'sha256'. False is returned |
| 38 | * for invalid values. |
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| 39 | * @return mixed |
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| 40 | */ |
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| 41 | public function getFingerprint($algorithm = 'md5') |
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| 42 | { |
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| 43 | $type = self::validatePlugin('Keys', 'OpenSSH', 'savePublicKey'); |
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| 44 | if ($type === false) { |
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| 45 | return false; |
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| 46 | } |
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| 47 | $key = $this->toString('OpenSSH', ['binary' => true]); |
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| 48 | if ($key === false) { |
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| 49 | return false; |
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| 50 | } |
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| 51 | switch ($algorithm) { |
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| 52 | case 'sha256': |
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| 53 | $hash = new Hash('sha256'); |
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| 54 | $base = base64_encode($hash->hash($key)); |
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| 55 | return substr($base, 0, strlen($base) - 1); |
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| 56 | case 'md5': |
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| 57 | return substr(chunk_split(md5($key), 2, ':'), 0, -1); |
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| 58 | default: |
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| 59 | return false; |
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| 60 | } |
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| 61 | } |
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| 62 | } |