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/**
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/**
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 * PKCS1 Formatted Key Handler
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 * PKCS1 Formatted Key Handler
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 *
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 *
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 * PHP version 5
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 * PHP version 5
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 *
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 *
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 * @category  Crypt
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 * @package   Common
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 * @author    Jim Wigginton <terrafrost@php.net>
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 * @author    Jim Wigginton <terrafrost@php.net>
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 * @copyright 2015 Jim Wigginton
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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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 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
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 * @link      http://phpseclib.sourceforge.net
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 * @link      http://phpseclib.sourceforge.net
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 */
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 */
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use phpseclib3\File\ASN1;
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use phpseclib3\File\ASN1;
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/**
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/**
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 * PKCS1 Formatted Key Handler
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 * PKCS1 Formatted Key Handler
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 *
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 *
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 * @package RSA
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 * @author  Jim Wigginton <terrafrost@php.net>
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 * @author  Jim Wigginton <terrafrost@php.net>
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 * @access  public
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 */
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 */
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abstract class PKCS1 extends PKCS
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abstract class PKCS1 extends PKCS
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{
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{
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    /**
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    /**
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     * Default encryption algorithm
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     * Default encryption algorithm
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     *
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     *
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     * @var string
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     * @var string
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     * @access private
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     */
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     */
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    private static $defaultEncryptionAlgorithm = 'AES-128-CBC';
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    private static $defaultEncryptionAlgorithm = 'AES-128-CBC';
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    /**
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    /**
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     * Sets the default encryption algorithm
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     * Sets the default encryption algorithm
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     *
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     *
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     * @access public
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     * @param string $algo
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     * @param string $algo
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     */
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     */
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    public static function setEncryptionAlgorithm($algo)
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    public static function setEncryptionAlgorithm($algo)
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    {
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    {
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        self::$defaultEncryptionAlgorithm = $algo;
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        self::$defaultEncryptionAlgorithm = $algo;
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    }
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    }
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    /**
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    /**
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     * Returns the mode constant corresponding to the mode string
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     * Returns the mode constant corresponding to the mode string
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     *
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     *
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     * @access public
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     * @param string $mode
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     * @param string $mode
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     * @return int
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     * @return int
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     * @throws \UnexpectedValueException if the block cipher mode is unsupported
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     * @throws \UnexpectedValueException if the block cipher mode is unsupported
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     */
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     */
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    private static function getEncryptionMode($mode)
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    private static function getEncryptionMode($mode)
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    }
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    }
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    /**
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    /**
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     * Returns a cipher object corresponding to a string
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     * Returns a cipher object corresponding to a string
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     *
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     *
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     * @access public
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     * @param string $algo
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     * @param string $algo
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     * @return string
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     * @return string
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     * @throws \UnexpectedValueException if the encryption algorithm is unsupported
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     * @throws \UnexpectedValueException if the encryption algorithm is unsupported
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     */
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     */
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    private static function getEncryptionObject($algo)
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    private static function getEncryptionObject($algo)
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    }
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    }
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    /**
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    /**
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     * Generate a symmetric key for PKCS#1 keys
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     * Generate a symmetric key for PKCS#1 keys
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     *
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     *
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     * @access private
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     * @param string $password
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     * @param string $password
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     * @param string $iv
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     * @param string $iv
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     * @param int $length
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     * @param int $length
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     * @return string
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     * @return string
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     */
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     */
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    }
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    }
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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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     * Break a public or private key down into its constituent components
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     *
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     *
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     * @access public
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     * @param string $key
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     * @param string $key
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     * @param string $password optional
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     * @param string $password optional
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     * @return array
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     * @return array
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     */
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     */
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    protected static function load($key, $password)
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    protected static function load($key, $password)
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    }
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    }
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    /**
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    /**
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     * Wrap a private key appropriately
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     * Wrap a private key appropriately
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     *
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     *
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     * @access public
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     * @param string $key
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     * @param string $key
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     * @param string $type
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     * @param string $type
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     * @param string $password
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     * @param string $password
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     * @param array $options optional
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     * @param array $options optional
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     * @return string
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     * @return string
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    }
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    }
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    /**
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    /**
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     * Wrap a public key appropriately
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     * Wrap a public key appropriately
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     *
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     *
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     * @access public
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     * @param string $key
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     * @param string $key
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     * @param string $type
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     * @param string $type
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     * @return string
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     * @return string
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     */
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     */
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    protected static function wrapPublicKey($key, $type)
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    protected static function wrapPublicKey($key, $type)