1<?php
2
3/**
4 * secp160k1
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
16namespace phpseclib3\Crypt\EC\Curves;
17
18use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
19use phpseclib3\Math\BigInteger;
20
21class secp160k1 extends KoblitzPrime
22{
23    public function __construct()
24    {
25        // same as secp160r2
26        $this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73', 16));
27        $this->setCoefficients(
28            new BigInteger('0000000000000000000000000000000000000000', 16),
29            new BigInteger('0000000000000000000000000000000000000007', 16)
30        );
31        $this->setBasePoint(
32            new BigInteger('3B4C382CE37AA192A4019E763036F4F5DD4D7EBB', 16),
33            new BigInteger('938CF935318FDCED6BC28286531733C3F03C4FEE', 16)
34        );
35        $this->setOrder(new BigInteger('0100000000000000000001B8FA16DFAB9ACA16B6B3', 16));
36
37        $this->basis = [];
38        $this->basis[] = [
39            'a' => new BigInteger('0096341F1138933BC2F505', -16),
40            'b' => new BigInteger('FF6E9D0418C67BB8D5F562', -16)
41        ];
42        $this->basis[] = [
43            'a' => new BigInteger('01BDCB3A09AAAABEAFF4A8', -16),
44            'b' => new BigInteger('04D12329FF0EF498EA67', -16)
45        ];
46        $this->beta = $this->factory->newInteger(new BigInteger('645B7345A143464942CC46D7CF4D5D1E1E6CBB68', -16));
47    }
48}
49