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   1  <?php
   2  
   3  /**
   4   * secp224k1
   5   *
   6   * PHP version 5 and 7
   7   *
   8   * @category  Crypt
   9   * @package   EC
  10   * @author    Jim Wigginton <[email protected]>
  11   * @copyright 2017 Jim Wigginton
  12   * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
  13   * @link      http://pear.php.net/package/Math_BigInteger
  14   */
  15  
  16  namespace phpseclib3\Crypt\EC\Curves;
  17  
  18  use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
  19  use phpseclib3\Math\BigInteger;
  20  
  21  class secp224k1 extends KoblitzPrime
  22  {
  23      public function __construct()
  24      {
  25          $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D', 16));
  26          $this->setCoefficients(
  27              new BigInteger('00000000000000000000000000000000000000000000000000000000', 16),
  28              new BigInteger('00000000000000000000000000000000000000000000000000000005', 16)
  29          );
  30          $this->setBasePoint(
  31              new BigInteger('A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C', 16),
  32              new BigInteger('7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5', 16)
  33          );
  34          $this->setOrder(new BigInteger('010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7', 16));
  35  
  36          $this->basis = [];
  37          $this->basis[] = [
  38              'a' => new BigInteger('00B8ADF1378A6EB73409FA6C9C637D', -16),
  39              'b' => new BigInteger('94730F82B358A3776A826298FA6F', -16)
  40          ];
  41          $this->basis[] = [
  42              'a' => new BigInteger('01DCE8D2EC6184CAF0A972769FCC8B', -16),
  43              'b' => new BigInteger('4D2100BA3DC75AAB747CCF355DEC', -16)
  44          ];
  45          $this->beta = $this->factory->newInteger(new BigInteger('01F178FFA4B17C89E6F73AECE2AAD57AF4C0A748B63C830947B27E04', -16));
  46      }
  47  }