50 lines
1.8 KiB
PHP
50 lines
1.8 KiB
PHP
<?php
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/**
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* secp256k1
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*
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* This is the curve used in Bitcoin
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*
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* PHP version 5 and 7
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2017 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://pear.php.net/package/Math_BigInteger
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*/
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namespace phpseclib3\Crypt\EC\Curves;
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//use phpseclib3\Crypt\EC\BaseCurves\Prime;
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use phpseclib3\Crypt\EC\BaseCurves\KoblitzPrime;
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use phpseclib3\Math\BigInteger;
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//class secp256k1 extends Prime
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class secp256k1 extends KoblitzPrime
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{
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public function __construct()
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{
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$this->setModulo(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F', 16));
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$this->setCoefficients(
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new BigInteger('0000000000000000000000000000000000000000000000000000000000000000', 16),
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new BigInteger('0000000000000000000000000000000000000000000000000000000000000007', 16)
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);
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$this->setOrder(new BigInteger('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141', 16));
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$this->setBasePoint(
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new BigInteger('79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798', 16),
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new BigInteger('483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8', 16)
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);
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$this->basis = [];
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$this->basis[] = [
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'a' => new BigInteger('3086D221A7D46BCDE86C90E49284EB15', -16),
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'b' => new BigInteger('FF1BBC8129FEF177D790AB8056F5401B3D', -16)
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];
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$this->basis[] = [
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'a' => new BigInteger('114CA50F7A8E2F3F657C1108D9D44CFD8', -16),
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'b' => new BigInteger('3086D221A7D46BCDE86C90E49284EB15', -16)
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];
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$this->beta = $this->factory->newInteger(new BigInteger('7AE96A2B657C07106E64479EAC3434E99CF0497512F58995C1396C28719501EE', -16));
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}
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}
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