/var/www/flurhymez/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys
Edit: /var/www/flurhymez/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Keys/MontgomeryPrivate.php (3434B)
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib3\Crypt\EC\Formats\Keys;
use phpseclib3\Crypt\EC\Curves\Curve25519;
use phpseclib3\Crypt\EC\Curves\Curve448;
use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
use phpseclib3\Math\BigInteger;
use phpseclib3\Exception\UnsupportedFormatException;
/**
* Montgomery Curve Private Key Handler
*
* @package EC
* @author Jim Wigginton
* @access public
*/
abstract class MontgomeryPrivate
{
/**
* Is invisible flag
*
* @access private
*/
const IS_INVISIBLE = true;
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
public static function load($key, $password = '')
{
switch (strlen($key)) {
case 32:
$curve = new Curve25519;
break;
case 56:
$curve = new Curve448;
break;
default:
throw new \LengthException('The only supported lengths are 32 and 56');
}
$components = ['curve' => $curve];
$components['dA'] = new BigInteger($key, 256);
$curve->rangeCheck($components['dA']);
// note that EC::getEncodedCoordinates does some additional "magic" (it does strrev on the result)
$components['QA'] = $components['curve']->multiplyPoint($components['curve']->getBasePoint(), $components['dA']);
return $components;
}
/**
* Convert an EC public key to the appropriate format
*
* @access public
* @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve
* @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
* @return string
*/
public static function savePublicKey(MontgomeryCurve $curve, array $publicKey)
{
return strrev($publicKey[0]->toBytes());
}
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib3\Math\BigInteger $privateKey
* @param \phpseclib3\Crypt\EC\BaseCurves\Montgomery $curve
* @param \phpseclib3\Math\Common\FiniteField\Integer[] $publicKey
* @param string $password optional
* @return string
*/
public static function savePrivateKey(BigInteger $privateKey, MontgomeryCurve $curve, array $publicKey, $password = '')
{
if (!empty($password) && is_string($password)) {
throw new UnsupportedFormatException('MontgomeryPrivate private keys do not support encryption');
}
return $privateKey->toBytes();
}
}