backup
/
src
/
JetBackup
/
3rdparty
/
phpseclib3
/
Crypt
/
EC
/
Formats
/
Keys
/
MontgomeryPublic.php
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Common.php
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MontgomeryPrivate.php
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MontgomeryPublic.php
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OpenSSH.php
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MontgomeryPublic.php
69 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Montgomery Public 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\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve; |
| 19 | use phpseclib3\Crypt\EC\Curves\Curve25519; |
| 20 | use phpseclib3\Crypt\EC\Curves\Curve448; |
| 21 | use phpseclib3\Exception\LengthException; |
| 22 | use phpseclib3\Math\BigInteger; |
| 23 | use phpseclib3\Math\Common\FiniteField\Integer; |
| 24 | |
| 25 | /** |
| 26 | * Montgomery Public Key Handler |
| 27 | * |
| 28 | * @author Jim Wigginton <terrafrost@php.net> |
| 29 | */ |
| 30 | abstract class MontgomeryPublic |
| 31 | { |
| 32 | /** |
| 33 | * Is invisible flag |
| 34 | */ |
| 35 | public const IS_INVISIBLE = true; |
| 36 | |
| 37 | /** |
| 38 | * Break a public or private key down into its constituent components |
| 39 | */ |
| 40 | public static function load(string $key, ?string $password = null): array |
| 41 | { |
| 42 | switch (strlen($key)) { |
| 43 | case 32: |
| 44 | $curve = new Curve25519(); |
| 45 | break; |
| 46 | case 56: |
| 47 | $curve = new Curve448(); |
| 48 | break; |
| 49 | default: |
| 50 | throw new LengthException('The only supported lengths are 32 and 56'); |
| 51 | } |
| 52 | |
| 53 | $components = ['curve' => $curve]; |
| 54 | $components['QA'] = [$components['curve']->convertInteger(new BigInteger(strrev($key), 256))]; |
| 55 | |
| 56 | return $components; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Convert an EC public key to the appropriate format |
| 61 | * |
| 62 | * @param Integer[] $publicKey |
| 63 | */ |
| 64 | public static function savePublicKey(MontgomeryCurve $curve, array $publicKey): string |
| 65 | { |
| 66 | return strrev($publicKey[0]->toBytes()); |
| 67 | } |
| 68 | } |
| 69 |