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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 <terrafrost@php.net>
  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. }
  48.