<?php
declare(strict_types=1);
namespace PQCrypto\Tests;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
final class MLDSATest extends TestCase
{
/** @return array<string, array{string, int, int, int}> */
public static function variantProvider(): array
{
return [
'MLDSA44' => ['PQCrypto\\MLDSA44', 32, 1312, 2420],
'MLDSA65' => ['PQCrypto\\MLDSA65', 32, 1952, 3309],
'MLDSA87' => ['PQCrypto\\MLDSA87', 32, 2592, 4627],
];
}
#[DataProvider('variantProvider')]
public function testKeygenSizes(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
[$sk, $vk] = $class::generateKeypair();
$this->assertSame($seedLen, strlen($sk->bytes()));
$this->assertSame($vkLen, strlen($vk->bytes()));
}
#[DataProvider('variantProvider')]
public function testSignVerifyRoundTrip(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
[$sk, $vk] = $class::generateKeypair();
$sig = $sk->sign('test message');
$this->assertSame($sigLen, strlen($sig));
$this->assertTrue($vk->verify($sig, 'test message'));
$this->assertFalse($vk->verify($sig, 'wrong message'));
}
#[DataProvider('variantProvider')]
public function testSigningKeyFromBytesRoundTrip(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
[$sk, $vk] = $class::generateKeypair();
$skClass = $class . '\\SigningKey';
$restored = $skClass::fromBytes($sk->bytes());
$sig = $restored->sign('round-trip test');
$this->assertTrue($vk->verify($sig, 'round-trip test'));
}
#[DataProvider('variantProvider')]
public function testVerifyingKeyFromBytesRoundTrip(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
[$sk, $vk] = $class::generateKeypair();
$vkClass = $class . '\\VerifyingKey';
$restored = $vkClass::fromBytes($vk->bytes());
$sig = $sk->sign('vk round-trip');
$this->assertTrue($restored->verify($sig, 'vk round-trip'));
}
#[DataProvider('variantProvider')]
public function testSigningKeyRejectsWrongLength(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
$skClass = $class . '\\SigningKey';
$this->expectException(\Exception::class);
$skClass::fromBytes('short');
}
#[DataProvider('variantProvider')]
public function testVerifyingKeyRejectsWrongLength(
string $class,
int $seedLen,
int $vkLen,
int $sigLen
): void {
$vkClass = $class . '\\VerifyingKey';
$this->expectException(\Exception::class);
$vkClass::fromBytes('short');
}
}
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