phpseclib/tests/Unit/Math/PrimeFieldTest.php
2023-11-01 20:23:28 -05:00

52 lines
1.3 KiB
PHP

<?php
namespace phpseclib3\Tests\Unit\Math;
use phpseclib3\Math\BigInteger;
use phpseclib3\Math\PrimeField;
use phpseclib3\Tests\PhpseclibTestCase;
class PrimeFieldTest extends PhpseclibTestCase
{
public function testPrimeFieldWithCompositeNumbers()
{
$this->expectException('UnexpectedValueException');
$a = new BigInteger('65', 10);
$p = new BigInteger('126', 10); // 126 isn't a prime
$num = new PrimeField($p);
$num2 = $num->newInteger($a);
$num2->squareRoot();
}
public function testPrimeFieldWithPrimeNumbers()
{
$a = new BigInteger('65', 10);
$p = new BigInteger('127', 10);
$num = new PrimeField($p);
$num2 = $num->newInteger($a);
$this->assertFalse($num2->squareRoot());
}
/**
* @group github1929
*/
public function testGarbageCollectedToBytes()
{
$blob = base64_decode('BFgsTFQeqKr0toyURbtT43INMDS7FTHjz3yn3MR1/Yv/pb2b9ZCYNQ/Tafe5hQpEJ4TpZOKfikP/hWZvFL8QCPgqbIGqw/KTfA==');
$public = "\0" . substr($blob, 0, 49);
$private = substr($blob, -24);
$point = \phpseclib3\Crypt\EC\Formats\Keys\PKCS1::extractPoint(
$public,
new \phpseclib3\Crypt\EC\Curves\secp192r1()
);
$this->assertIsString($point[0]->toBytes());
}
}