forked from GNUsocial/gnu-social
		
	
		
			
				
	
	
		
			104 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Raw RSA Key Handler
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 *
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 * PHP version 5
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 *
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 * An array containing two \phpseclib\Math\BigInteger objects.
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 *
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 * The exponent can be indexed with any of the following:
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 *
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 * 0, e, exponent, publicExponent
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 *
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 * The modulus can be indexed with any of the following:
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 *
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 * 1, n, modulo, modulus
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 *
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 * @category  Crypt
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 * @package   RSA
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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\RSA;
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use phpseclib\Math\BigInteger;
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/**
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 * Raw RSA Key Handler
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 *
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 * @package RSA
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 * @author  Jim Wigginton <terrafrost@php.net>
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 * @access  public
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 */
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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 string $key
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     * @param string $password optional
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     * @return array
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     */
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    static function load($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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        if (isset($key['isPublicKey']) && isset($key['modulus'])) {
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            if (isset($key['privateExponent']) || isset($key['publicExponent'])) {
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                if (!isset($key['primes'])) {
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                    return $key;
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                }
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                if (isset($key['exponents']) && isset($key['coefficients']) && isset($key['publicExponent']) && isset($key['privateExponent'])) {
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                    return $key;
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                }
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            }
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        }
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        $components = array('isPublicKey' => true);
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        switch (true) {
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            case isset($key['e']):
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                $components['publicExponent'] = $key['e'];
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                break;
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            case isset($key['exponent']):
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                $components['publicExponent'] = $key['exponent'];
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                break;
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            case isset($key['publicExponent']):
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                $components['publicExponent'] = $key['publicExponent'];
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                break;
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            case isset($key[0]):
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                $components['publicExponent'] = $key[0];
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        }
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        switch (true) {
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            case isset($key['n']):
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                $components['modulus'] = $key['n'];
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                break;
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            case isset($key['modulo']):
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                $components['modulus'] = $key['modulo'];
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                break;
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            case isset($key['modulus']):
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                $components['modulus'] = $key['modulus'];
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                break;
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            case isset($key[1]):
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                $components['modulus'] = $key[1];
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        }
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        return isset($components['modulus']) && isset($components['publicExponent']) ? $components : false;
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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 $n
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     * @param \phpseclib\Math\BigInteger $e
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     * @return string
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     */
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    static function savePublicKey(BigInteger $n, BigInteger $e)
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    {
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        return array('e' => clone $e, 'n' => clone $n);
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    }
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}
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