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96 lines
2.6 KiB
PHP
96 lines
2.6 KiB
PHP
<?php
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/**
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* Raw DSA Key Handler
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*
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* PHP version 5
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*
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* Reads and creates arrays as DSA keys
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*
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* @category Crypt
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* @package DSA
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2015 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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namespace phpseclib\Crypt\DSA\Keys;
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use phpseclib\Math\BigInteger;
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/**
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* Raw DSA Key Handler
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*
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* @package DSA
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* @author Jim Wigginton <terrafrost@php.net>
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* @access public
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*/
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abstract class Raw
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{
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/**
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* Break a public or private key down into its constituent components
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*
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* @access public
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* @param array $key
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* @param string $password optional
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* @return array
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*/
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public static function load($key, $password = '')
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{
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if (!is_array($key)) {
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return false;
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}
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switch (true) {
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case !isset($key['p']) || !isset($key['q']) || !isset($key['g']):
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case !$key['p'] instanceof BigInteger:
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case !$key['q'] instanceof BigInteger:
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case !$key['g'] instanceof BigInteger:
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case !isset($key['x']) && !isset($key['y']):
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case isset($key['x']) && !$key['x'] instanceof BigInteger:
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case isset($key['y']) && !$key['y'] instanceof BigInteger:
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return false;
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}
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$options = ['p' => 1, 'q' => 1, 'g' => 1, 'x' => 1, 'y' => 1];
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return array_intersect_key($key, $options);
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}
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/**
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* Convert a private key to the appropriate format.
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*
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* @access public
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* @param \phpseclib\Math\BigInteger $p
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* @param \phpseclib\Math\BigInteger $q
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* @param \phpseclib\Math\BigInteger $g
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* @param \phpseclib\Math\BigInteger $y
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* @param \phpseclib\Math\BigInteger $x
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* @param array $primes
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* @param array $exponents
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* @param array $coefficients
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* @param string $password optional
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* @return string
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*/
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public static function savePrivateKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y, BigInteger $x, $password = '')
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{
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return compact('p', 'q', 'g', 'y', 'x');
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}
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/**
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* Convert a public key to the appropriate format
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*
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* @access public
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* @param \phpseclib\Math\BigInteger $p
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* @param \phpseclib\Math\BigInteger $q
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* @param \phpseclib\Math\BigInteger $g
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* @param \phpseclib\Math\BigInteger $y
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* @return string
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*/
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public static function savePublicKey(BigInteger $p, BigInteger $q, BigInteger $g, BigInteger $y)
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{
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return compact('p', 'q', 'g', 'y');
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}
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}
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