<?php
declare(strict_types=1);
namespace PQCrypto\Tests;
use PHPUnit\Framework\TestCase;
use PQCrypto\XWing;
final class XWingTest extends TestCase
{
public function testKeygenSizes(): void
{
[$sk, $pk] = XWing::generateKeypair();
$this->assertSame(32, strlen($sk->bytes()));
$this->assertSame(1216, strlen($pk->bytes()));
}
public function testEncapsulateDecapsulateRoundTrip(): void
{
[$sk, $pk] = XWing::generateKeypair();
[$ss, $ct] = $pk->encapsulate();
$this->assertSame(32, strlen($ss));
$this->assertSame(1120, strlen($ct));
$rss = $sk->decapsulate($ct);
$this->assertTrue(hash_equals($rss, $ss));
}
public function testDecapsulationKeyFromBytesRoundTrip(): void
{
[$sk, $pk] = XWing::generateKeypair();
$restored = XWing\DecapsulationKey::fromBytes($sk->bytes());
[$ss, $ct] = $pk->encapsulate();
$rss = $restored->decapsulate($ct);
$this->assertTrue(hash_equals($rss, $ss));
}
public function testEncapsulationKeyFromBytesRoundTrip(): void
{
[$sk, $pk] = XWing::generateKeypair();
$restored = XWing\EncapsulationKey::fromBytes($pk->bytes());
[$ss, $ct] = $restored->encapsulate();
$rss = $sk->decapsulate($ct);
$this->assertTrue(hash_equals($rss, $ss));
}
public function testRejectsWrongSeedLength(): void
{
$this->expectException(\Exception::class);
XWing\DecapsulationKey::fromBytes('short');
}
public function testRejectsWrongCiphertextLength(): void
{
[$sk, $_] = XWing::generateKeypair();
$this->expectException(\Exception::class);
$sk->decapsulate('wrong');
}
}
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