.htaccess
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Common.php
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JWK.php
1 year ago
MontgomeryPrivate.php
1 year ago
MontgomeryPublic.php
1 year ago
OpenSSH.php
1 year ago
PKCS1.php
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PKCS8.php
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PuTTY.php
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XML.php
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web.config
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PuTTY.php
136 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * PuTTY Formatted EC Key Handler |
| 5 | * |
| 6 | * PHP version 5 |
| 7 | * |
| 8 | * @author Jim Wigginton <terrafrost@php.net> |
| 9 | * @copyright 2015 Jim Wigginton |
| 10 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
| 11 | * @link http://phpseclib.sourceforge.net |
| 12 | */ |
| 13 | |
| 14 | declare(strict_types=1); |
| 15 | |
| 16 | namespace phpseclib3\Crypt\EC\Formats\Keys; |
| 17 | |
| 18 | use phpseclib3\Common\Functions\Strings; |
| 19 | use phpseclib3\Crypt\Common\Formats\Keys\PuTTY as Progenitor; |
| 20 | use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve; |
| 21 | use phpseclib3\Crypt\EC\BaseCurves\TwistedEdwards as TwistedEdwardsCurve; |
| 22 | use phpseclib3\Exception\RuntimeException; |
| 23 | use phpseclib3\Math\BigInteger; |
| 24 | use phpseclib3\Math\Common\FiniteField; |
| 25 | use phpseclib3\Math\Common\FiniteField\Integer; |
| 26 | |
| 27 | /** |
| 28 | * PuTTY Formatted EC Key Handler |
| 29 | * |
| 30 | * @author Jim Wigginton <terrafrost@php.net> |
| 31 | */ |
| 32 | abstract class PuTTY extends Progenitor |
| 33 | { |
| 34 | use Common; |
| 35 | |
| 36 | /** |
| 37 | * Public Handler |
| 38 | * |
| 39 | * @var string |
| 40 | */ |
| 41 | public const PUBLIC_HANDLER = 'phpseclib3\Crypt\EC\Formats\Keys\OpenSSH'; |
| 42 | |
| 43 | /** |
| 44 | * Supported Key Types |
| 45 | * |
| 46 | * @var array |
| 47 | */ |
| 48 | protected static $types = [ |
| 49 | 'ecdsa-sha2-nistp256', |
| 50 | 'ecdsa-sha2-nistp384', |
| 51 | 'ecdsa-sha2-nistp521', |
| 52 | 'ssh-ed25519', |
| 53 | ]; |
| 54 | |
| 55 | /** |
| 56 | * Break a public or private key down into its constituent components |
| 57 | * |
| 58 | * @param string|array $key |
| 59 | * @param string|false $password |
| 60 | * @return array|false |
| 61 | */ |
| 62 | public static function load($key, $password) |
| 63 | { |
| 64 | $components = parent::load($key, $password); |
| 65 | if (!isset($components['private'])) { |
| 66 | return $components; |
| 67 | } |
| 68 | |
| 69 | $private = $components['private']; |
| 70 | |
| 71 | $temp = Strings::base64_encode(Strings::packSSH2('s', $components['type']) . $components['public']); |
| 72 | $components = OpenSSH::load($components['type'] . ' ' . $temp . ' ' . $components['comment']); |
| 73 | |
| 74 | if ($components['curve'] instanceof TwistedEdwardsCurve) { |
| 75 | if (Strings::shift($private, 4) != "\0\0\0\x20") { |
| 76 | throw new RuntimeException('Length of ssh-ed25519 key should be 32'); |
| 77 | } |
| 78 | $arr = $components['curve']->extractSecret($private); |
| 79 | $components['dA'] = $arr['dA']; |
| 80 | $components['secret'] = $arr['secret']; |
| 81 | } else { |
| 82 | [$components['dA']] = Strings::unpackSSH2('i', $private); |
| 83 | $components['curve']->rangeCheck($components['dA']); |
| 84 | } |
| 85 | |
| 86 | return $components; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Convert a private key to the appropriate format. |
| 91 | * |
| 92 | * @param Integer[] $publicKey |
| 93 | */ |
| 94 | public static function savePrivateKey(BigInteger $privateKey, BaseCurve $curve, array $publicKey, ?string $secret = null, ?string $password = null, array $options = []): string |
| 95 | { |
| 96 | self::initialize_static_variables(); |
| 97 | |
| 98 | $public = explode(' ', OpenSSH::savePublicKey($curve, $publicKey)); |
| 99 | $name = $public[0]; |
| 100 | $public = Strings::base64_decode($public[1]); |
| 101 | [, $length] = unpack('N', Strings::shift($public, 4)); |
| 102 | Strings::shift($public, $length); |
| 103 | |
| 104 | // PuTTY pads private keys with a null byte per the following: |
| 105 | // https://github.com/github/putty/blob/a3d14d77f566a41fc61dfdc5c2e0e384c9e6ae8b/sshecc.c#L1926 |
| 106 | if (!$curve instanceof TwistedEdwardsCurve) { |
| 107 | $private = $privateKey->toBytes(); |
| 108 | if (!(strlen($privateKey->toBits()) & 7)) { |
| 109 | $private = "\0$private"; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | $private = $curve instanceof TwistedEdwardsCurve ? |
| 114 | Strings::packSSH2('s', $secret) : |
| 115 | Strings::packSSH2('s', $private); |
| 116 | |
| 117 | return self::wrapPrivateKey($public, $private, $name, $password, $options); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Convert an EC public key to the appropriate format |
| 122 | * |
| 123 | * @param FiniteField[] $publicKey |
| 124 | */ |
| 125 | public static function savePublicKey(BaseCurve $curve, array $publicKey): string |
| 126 | { |
| 127 | $public = explode(' ', OpenSSH::savePublicKey($curve, $publicKey)); |
| 128 | $type = $public[0]; |
| 129 | $public = Strings::base64_decode($public[1]); |
| 130 | [, $length] = unpack('N', Strings::shift($public, 4)); |
| 131 | Strings::shift($public, $length); |
| 132 | |
| 133 | return self::wrapPublicKey($public, $type); |
| 134 | } |
| 135 | } |
| 136 |