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   1  <?php
   2  
   3  /**
   4   * secp224k1
   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 secp224k1 extends KoblitzPrime
  20  {
  21      public function __construct()
  22      {
  23          $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D', 16));
  24          $this->setCoefficients(
  25              new BigInteger('00000000000000000000000000000000000000000000000000000000', 16),
  26              new BigInteger('00000000000000000000000000000000000000000000000000000005', 16)
  27          );
  28          $this->setBasePoint(
  29              new BigInteger('A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C', 16),
  30              new BigInteger('7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5', 16)
  31          );
  32          $this->setOrder(new BigInteger('010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7', 16));
  33  
  34          $this->basis = [];
  35          $this->basis[] = [
  36              'a' => new BigInteger('00B8ADF1378A6EB73409FA6C9C637D', -16),
  37              'b' => new BigInteger('94730F82B358A3776A826298FA6F', -16)
  38          ];
  39          $this->basis[] = [
  40              'a' => new BigInteger('01DCE8D2EC6184CAF0A972769FCC8B', -16),
  41              'b' => new BigInteger('4D2100BA3DC75AAB747CCF355DEC', -16)
  42          ];
  43          $this->beta = $this->factory->newInteger(new BigInteger('01F178FFA4B17C89E6F73AECE2AAD57AF4C0A748B63C830947B27E04', -16));
  44      }
  45  }