Rev 874 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 827 | daniel-mar | 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 | namespace phpseclib3\Crypt\EC\Formats\Keys; |
||
| 15 | |||
| 16 | use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve; |
||
| 17 | use phpseclib3\Crypt\EC\Curves\Curve25519; |
||
| 18 | use phpseclib3\Crypt\EC\Curves\Curve448; |
||
| 19 | use phpseclib3\Math\BigInteger; |
||
| 20 | |||
| 21 | /** |
||
| 22 | * Montgomery Public Key Handler |
||
| 23 | * |
||
| 24 | * @author Jim Wigginton <terrafrost@php.net> |
||
| 25 | */ |
||
| 26 | abstract class MontgomeryPublic |
||
| 27 | { |
||
| 28 | /** |
||
| 29 | * Is invisible flag |
||
| 30 | * |
||
| 31 | */ |
||
| 32 | const IS_INVISIBLE = true; |
||
| 33 | |||
| 34 | /** |
||
| 35 | * Break a public or private key down into its constituent components |
||
| 36 | * |
||
| 37 | * @param string $key |
||
| 38 | * @param string $password optional |
||
| 39 | * @return array |
||
| 40 | */ |
||
| 41 | public static function load($key, $password = '') |
||
| 42 | { |
||
| 43 | switch (strlen($key)) { |
||
| 44 | case 32: |
||
| 45 | $curve = new Curve25519(); |
||
| 46 | break; |
||
| 47 | case 56: |
||
| 48 | $curve = new Curve448(); |
||
| 49 | break; |
||
| 50 | default: |
||
| 51 | throw new \LengthException('The only supported lengths are 32 and 56'); |
||
| 52 | } |
||
| 53 | |||
| 54 | $components = ['curve' => $curve]; |
||
| 55 | $components['QA'] = [$components['curve']->convertInteger(new BigInteger(strrev($key), 256))]; |
||
| 56 | |||
| 57 | return $components; |
||
| 58 | } |
||
| 59 | |||
| 60 | /** |
||
| 61 | * Convert an EC public key to the appropriate format |
||
| 62 | * |
||
| 63 | * @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve |
||
| 64 | * @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey |
||
| 65 | * @return string |
||
| 66 | */ |
||
| 67 | public static function savePublicKey(MontgomeryCurve $curve, array $publicKey) |
||
| 68 | { |
||
| 69 | return strrev($publicKey[0]->toBytes()); |
||
| 70 | } |
||
| 71 | } |