backup
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src
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phpseclib3
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Crypt
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EC
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Formats
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Keys
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MontgomeryPrivate.php
.htaccess
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Common.php
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JWK.php
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MontgomeryPrivate.php
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MontgomeryPublic.php
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OpenSSH.php
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PKCS1.php
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web.config
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MontgomeryPrivate.php
94 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Montgomery Private Key Handler |
| 5 | * |
| 6 | * "Naked" Curve25519 private keys can pretty much be any sequence of random 32x bytes so unless |
| 7 | * we have a "hidden" key handler pretty much every 32 byte string will be loaded as a curve25519 |
| 8 | * private key even if it probably isn't one by PublicKeyLoader. |
| 9 | * |
| 10 | * "Naked" Curve25519 public keys also a string of 32 bytes so distinguishing between a "naked" |
| 11 | * curve25519 private key and a public key is nigh impossible, hence separate plugins for each |
| 12 | * |
| 13 | * PHP version 5 |
| 14 | * |
| 15 | * @author Jim Wigginton <terrafrost@php.net> |
| 16 | * @copyright 2015 Jim Wigginton |
| 17 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
| 18 | * @link http://phpseclib.sourceforge.net |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace phpseclib3\Crypt\EC\Formats\Keys; |
| 24 | |
| 25 | use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve; |
| 26 | use phpseclib3\Crypt\EC\Curves\Curve25519; |
| 27 | use phpseclib3\Crypt\EC\Curves\Curve448; |
| 28 | use phpseclib3\Exception\LengthException; |
| 29 | use phpseclib3\Exception\UnsupportedFormatException; |
| 30 | use phpseclib3\Math\BigInteger; |
| 31 | use phpseclib3\Math\Common\FiniteField\Integer; |
| 32 | |
| 33 | /** |
| 34 | * Montgomery Curve Private Key Handler |
| 35 | * |
| 36 | * @author Jim Wigginton <terrafrost@php.net> |
| 37 | */ |
| 38 | abstract class MontgomeryPrivate |
| 39 | { |
| 40 | /** |
| 41 | * Is invisible flag |
| 42 | */ |
| 43 | public const IS_INVISIBLE = true; |
| 44 | |
| 45 | /** |
| 46 | * Break a public or private key down into its constituent components |
| 47 | */ |
| 48 | public static function load(string $key, ?string $password = null): array |
| 49 | { |
| 50 | switch (strlen($key)) { |
| 51 | case 32: |
| 52 | $curve = new Curve25519(); |
| 53 | break; |
| 54 | case 56: |
| 55 | $curve = new Curve448(); |
| 56 | break; |
| 57 | default: |
| 58 | throw new LengthException('The only supported lengths are 32 and 56'); |
| 59 | } |
| 60 | |
| 61 | $components = ['curve' => $curve]; |
| 62 | $components['dA'] = new BigInteger($key, 256); |
| 63 | $curve->rangeCheck($components['dA']); |
| 64 | // note that EC::getEncodedCoordinates does some additional "magic" (it does strrev on the result) |
| 65 | $components['QA'] = $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']); |
| 66 | |
| 67 | return $components; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Convert an EC public key to the appropriate format |
| 72 | * |
| 73 | * @param Integer[] $publicKey |
| 74 | */ |
| 75 | public static function savePublicKey(MontgomeryCurve $curve, array $publicKey): string |
| 76 | { |
| 77 | return strrev($publicKey[0]->toBytes()); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Convert a private key to the appropriate format. |
| 82 | * |
| 83 | * @param Integer[] $publicKey |
| 84 | */ |
| 85 | public static function savePrivateKey(BigInteger $privateKey, MontgomeryCurve $curve, array $publicKey, ?string $password = null): string |
| 86 | { |
| 87 | if (!empty($password) && is_string($password)) { |
| 88 | throw new UnsupportedFormatException('MontgomeryPrivate private keys do not support encryption'); |
| 89 | } |
| 90 | |
| 91 | return $privateKey->toBytes(); |
| 92 | } |
| 93 | } |
| 94 |