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| Rev | Author | Line No. | Line |
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| 827 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /** |
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| 4 | * "PKCS1" Formatted EC Key Handler |
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| 5 | * |
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| 6 | * PHP version 5 |
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| 7 | * |
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| 8 | * Processes keys with the following headers: |
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| 9 | * |
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| 10 | * -----BEGIN DH PARAMETERS----- |
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| 11 | * |
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| 12 | * Technically, PKCS1 is for RSA keys, only, but we're using PKCS1 to describe |
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| 13 | * DSA, whose format isn't really formally described anywhere, so might as well |
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| 14 | * use it to describe this, too. |
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| 15 | * |
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| 874 | daniel-mar | 16 | * @category Crypt |
| 17 | * @package DH |
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| 827 | daniel-mar | 18 | * @author Jim Wigginton <terrafrost@php.net> |
| 19 | * @copyright 2015 Jim Wigginton |
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| 20 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
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| 21 | * @link http://phpseclib.sourceforge.net |
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| 22 | */ |
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| 23 | |||
| 24 | namespace phpseclib3\Crypt\DH\Formats\Keys; |
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| 25 | |||
| 26 | use phpseclib3\Crypt\Common\Formats\Keys\PKCS1 as Progenitor; |
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| 27 | use phpseclib3\File\ASN1; |
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| 28 | use phpseclib3\File\ASN1\Maps; |
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| 29 | use phpseclib3\Math\BigInteger; |
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| 30 | |||
| 31 | /** |
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| 32 | * "PKCS1" Formatted DH Key Handler |
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| 33 | * |
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| 874 | daniel-mar | 34 | * @package DH |
| 827 | daniel-mar | 35 | * @author Jim Wigginton <terrafrost@php.net> |
| 874 | daniel-mar | 36 | * @access public |
| 827 | daniel-mar | 37 | */ |
| 38 | abstract class PKCS1 extends Progenitor |
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| 39 | { |
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| 40 | /** |
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| 41 | * Break a public or private key down into its constituent components |
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| 42 | * |
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| 874 | daniel-mar | 43 | * @access public |
| 827 | daniel-mar | 44 | * @param string $key |
| 45 | * @param string $password optional |
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| 46 | * @return array |
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| 47 | */ |
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| 48 | public static function load($key, $password = '') |
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| 49 | { |
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| 50 | $key = parent::load($key, $password); |
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| 51 | |||
| 52 | $decoded = ASN1::decodeBER($key); |
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| 53 | if (empty($decoded)) { |
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| 54 | throw new \RuntimeException('Unable to decode BER'); |
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| 55 | } |
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| 56 | |||
| 57 | $components = ASN1::asn1map($decoded[0], Maps\DHParameter::MAP); |
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| 58 | if (!is_array($components)) { |
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| 59 | throw new \RuntimeException('Unable to perform ASN1 mapping on parameters'); |
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| 60 | } |
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| 61 | |||
| 62 | return $components; |
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| 63 | } |
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| 64 | |||
| 65 | /** |
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| 66 | * Convert EC parameters to the appropriate format |
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| 67 | * |
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| 874 | daniel-mar | 68 | * @access public |
| 827 | daniel-mar | 69 | * @return string |
| 70 | */ |
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| 71 | public static function saveParameters(BigInteger $prime, BigInteger $base, array $options = []) |
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| 72 | { |
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| 73 | $params = [ |
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| 74 | 'prime' => $prime, |
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| 75 | 'base' => $base |
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| 76 | ]; |
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| 77 | $params = ASN1::encodeDER($params, Maps\DHParameter::MAP); |
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| 78 | |||
| 79 | return "-----BEGIN DH PARAMETERS-----\r\n" . |
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| 80 | chunk_split(base64_encode($params), 64) . |
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| 81 | "-----END DH PARAMETERS-----\r\n"; |
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| 82 | } |
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| 83 | } |