<?php
declare(strict_types=1);
namespace PQCrypto\Tests;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
use PQCrypto\SLHDSA;
final class SLHDSATest extends TestCase
{
/** @return array<string, array{string, string, int, int}> */
public static function parameterSetProvider(): array
{
return [
'shake128-fast' => ['shake128', 'fast', 64, 32],
'shake128-small' => ['shake128', 'small', 64, 32],
'shake192-fast' => ['shake192', 'fast', 96, 48],
'shake192-small' => ['shake192', 'small', 96, 48],
'shake256-fast' => ['shake256', 'fast', 128, 64],
'shake256-small' => ['shake256', 'small', 128, 64],
'sha2-128-fast' => ['sha2-128', 'fast', 64, 32],
'sha2-128-small' => ['sha2-128', 'small', 64, 32],
'sha2-192-fast' => ['sha2-192', 'fast', 96, 48],
'sha2-192-small' => ['sha2-192', 'small', 96, 48],
'sha2-256-fast' => ['sha2-256', 'fast', 128, 64],
'sha2-256-small' => ['sha2-256', 'small', 128, 64],
];
}
#[DataProvider('parameterSetProvider')]
public function testSignVerifyRoundTrip(
string $hash,
string $speed,
int $skLen,
int $vkLen
): void {
$slh = new SLHDSA($hash, $speed);
[$sk, $vk] = $slh->generateKeypair();
$this->assertSame($skLen, strlen($sk->bytes()));
$this->assertSame($vkLen, strlen($vk->bytes()));
$sig = $sk->sign('slh-dsa test');
$this->assertGreaterThan(0, strlen($sig));
$this->assertTrue($vk->verify($sig, 'slh-dsa test'));
$this->assertFalse($vk->verify($sig, 'wrong'));
}
#[DataProvider('parameterSetProvider')]
public function testImportRoundTrip(
string $hash,
string $speed,
int $skLen,
int $vkLen
): void {
$slh = new SLHDSA($hash, $speed);
[$sk, $vk] = $slh->generateKeypair();
$skRestored = $slh->importSigningKey($sk->bytes());
$vkRestored = $slh->importVerifyingKey($vk->bytes());
$sig = $skRestored->sign('import test');
$this->assertTrue(
$vkRestored->verify($sig, 'import test')
);
}
public function testRejectsInvalidHash(): void
{
$this->expectException(\Exception::class);
new SLHDSA('invalid', 'fast');
}
public function testRejectsInvalidSpeed(): void
{
$this->expectException(\Exception::class);
new SLHDSA('shake128', 'invalid');
}
public function testImportSigningKeyRejectsWrongLength(): void
{
$slh = new SLHDSA('shake128', 'fast');
$this->expectException(\Exception::class);
$slh->importSigningKey('short');
}
public function testImportVerifyingKeyRejectsWrongLength(): void
{
$slh = new SLHDSA('shake128', 'fast');
$this->expectException(\Exception::class);
$slh->importVerifyingKey('short');
}
}
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