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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 827 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /** |
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| 4 | * PuTTY Formatted RSA Key Handler |
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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 RSA |
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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\RSA\Formats\Keys; |
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| 17 | |||
| 18 | use phpseclib3\Common\Functions\Strings; |
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| 19 | use phpseclib3\Crypt\Common\Formats\Keys\PuTTY as Progenitor; |
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| 20 | use phpseclib3\Math\BigInteger; |
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| 21 | |||
| 22 | /** |
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| 23 | * PuTTY Formatted RSA Key Handler |
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| 24 | * |
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| 874 | daniel-mar | 25 | * @package RSA |
| 827 | daniel-mar | 26 | * @author Jim Wigginton <terrafrost@php.net> |
| 874 | daniel-mar | 27 | * @access public |
| 827 | daniel-mar | 28 | */ |
| 29 | abstract class PuTTY extends Progenitor |
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| 30 | { |
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| 31 | /** |
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| 32 | * Public Handler |
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| 33 | * |
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| 34 | * @var string |
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| 874 | daniel-mar | 35 | * @access private |
| 827 | daniel-mar | 36 | */ |
| 37 | const PUBLIC_HANDLER = 'phpseclib3\Crypt\RSA\Formats\Keys\OpenSSH'; |
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| 38 | |||
| 39 | /** |
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| 40 | * Algorithm Identifier |
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| 41 | * |
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| 42 | * @var array |
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| 874 | daniel-mar | 43 | * @access private |
| 827 | daniel-mar | 44 | */ |
| 45 | protected static $types = ['ssh-rsa']; |
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| 46 | |||
| 47 | /** |
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| 48 | * Break a public or private key down into its constituent components |
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| 49 | * |
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| 874 | daniel-mar | 50 | * @access public |
| 827 | daniel-mar | 51 | * @param string $key |
| 52 | * @param string $password optional |
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| 53 | * @return array |
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| 54 | */ |
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| 55 | public static function load($key, $password = '') |
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| 56 | { |
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| 57 | static $one; |
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| 58 | if (!isset($one)) { |
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| 59 | $one = new BigInteger(1); |
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| 60 | } |
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| 61 | |||
| 62 | $components = parent::load($key, $password); |
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| 63 | if (!isset($components['private'])) { |
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| 64 | return $components; |
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| 65 | } |
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| 66 | extract($components); |
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| 67 | unset($components['public'], $components['private']); |
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| 68 | |||
| 69 | $isPublicKey = false; |
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| 70 | |||
| 71 | $result = Strings::unpackSSH2('ii', $public); |
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| 72 | if ($result === false) { |
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| 73 | throw new \UnexpectedValueException('Key appears to be malformed'); |
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| 74 | } |
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| 75 | list($publicExponent, $modulus) = $result; |
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| 76 | |||
| 77 | $result = Strings::unpackSSH2('iiii', $private); |
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| 78 | if ($result === false) { |
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| 79 | throw new \UnexpectedValueException('Key appears to be malformed'); |
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| 80 | } |
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| 81 | $primes = $coefficients = []; |
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| 82 | list($privateExponent, $primes[1], $primes[2], $coefficients[2]) = $result; |
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| 83 | |||
| 84 | $temp = $primes[1]->subtract($one); |
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| 85 | $exponents = [1 => $publicExponent->modInverse($temp)]; |
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| 86 | $temp = $primes[2]->subtract($one); |
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| 87 | $exponents[] = $publicExponent->modInverse($temp); |
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| 88 | |||
| 89 | return compact('publicExponent', 'modulus', 'privateExponent', 'primes', 'coefficients', 'exponents', 'comment', 'isPublicKey'); |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Convert a private key to the appropriate format. |
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| 94 | * |
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| 874 | daniel-mar | 95 | * @access public |
| 827 | daniel-mar | 96 | * @param \phpseclib3\Math\BigInteger $n |
| 97 | * @param \phpseclib3\Math\BigInteger $e |
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| 98 | * @param \phpseclib3\Math\BigInteger $d |
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| 99 | * @param array $primes |
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| 100 | * @param array $exponents |
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| 101 | * @param array $coefficients |
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| 102 | * @param string $password optional |
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| 103 | * @param array $options optional |
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| 104 | * @return string |
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| 105 | */ |
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| 106 | public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = []) |
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| 107 | { |
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| 108 | if (count($primes) != 2) { |
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| 109 | throw new \InvalidArgumentException('PuTTY does not support multi-prime RSA keys'); |
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| 110 | } |
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| 111 | |||
| 112 | $public = Strings::packSSH2('ii', $e, $n); |
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| 113 | $private = Strings::packSSH2('iiii', $d, $primes[1], $primes[2], $coefficients[2]); |
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| 114 | |||
| 115 | return self::wrapPrivateKey($public, $private, 'ssh-rsa', $password, $options); |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Convert a public key to the appropriate format |
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| 120 | * |
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| 874 | daniel-mar | 121 | * @access public |
| 827 | daniel-mar | 122 | * @param \phpseclib3\Math\BigInteger $n |
| 123 | * @param \phpseclib3\Math\BigInteger $e |
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| 124 | * @return string |
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| 125 | */ |
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| 126 | public static function savePublicKey(BigInteger $n, BigInteger $e) |
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| 127 | { |
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| 128 | return self::wrapPublicKey(Strings::packSSH2('ii', $e, $n), 'ssh-rsa'); |
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| 129 | } |
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| 130 | } |