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   1  <?php
   2  
   3  /**
   4   * secp192k1
   5   *
   6   * PHP version 5 and 7
   7   *
   8   * @author    Jim Wigginton <terrafrost@php.net>
   9   * @copyright 2017 Jim Wigginton
  10   * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
  11   * @link      http://pear.php.net/package/Math_BigInteger
  12   */
  13  
  14  namespace phpseclib3\Crypt\EC\Curves;
  15  
  16  use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
  17  use phpseclib3\Math\BigInteger;
  18  
  19  class secp192k1 extends KoblitzPrime
  20  {
  21      public function __construct()
  22      {
  23          $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37', 16));
  24          $this->setCoefficients(
  25              new BigInteger('000000000000000000000000000000000000000000000000', 16),
  26              new BigInteger('000000000000000000000000000000000000000000000003', 16)
  27          );
  28          $this->setBasePoint(
  29              new BigInteger('DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D', 16),
  30              new BigInteger('9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D', 16)
  31          );
  32          $this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D', 16));
  33  
  34          $this->basis = [];
  35          $this->basis[] = [
  36              'a' => new BigInteger('00B3FB3400DEC5C4ADCEB8655C', -16),
  37              'b' => new BigInteger('8EE96418CCF4CFC7124FDA0F', -16)
  38          ];
  39          $this->basis[] = [
  40              'a' => new BigInteger('01D90D03E8F096B9948B20F0A9', -16),
  41              'b' => new BigInteger('42E49819ABBA9474E1083F6B', -16)
  42          ];
  43          $this->beta = $this->factory->newInteger(new BigInteger('447A96E6C647963E2F7809FEAAB46947F34B0AA3CA0BBA74', -16));
  44      }
  45  }