<?php
declare(strict_types=1);
namespace ParagonIE\HPKE\Tests\AEAD;
use ParagonIE\HPKE\AEAD\AES256GCM;
use ParagonIE\HPKE\Interfaces\SymmetricKeyInterface;
use ParagonIE\HPKE\SymmetricKey;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
#[CoversClass('ParagonIE\HPKE\AEAD\AES256GCM')]
class AES256GCMTest extends TestCase
{
private AES256GCM $aes;
public function setUp(): void
{
$this->aes = new AES256GCM();
}
public static function rfcVectors(): array
{
return [
'DHKEM(P-521, HKDF-SHA512), HKDF-SHA512, AES-256-GCM' => [
new SymmetricKey(sodium_hex2bin('751e346ce8f0ddb2305c8a2a85c70d5cf559c53093656be636b9406d4d7d1b70')),
sodium_hex2bin('55ff7a7d739c69f44b25447b'),
sodium_hex2bin('4265617574792069732074727574682c20747275746820626561757479'),
sodium_hex2bin('436f756e742d30'),
sodium_hex2bin('170f8beddfe949b75ef9c387e201baf4132fa7374593dfafa90768788b'),
sodium_hex2bin('7b2b200aafcc6d80ea4c795a7c5b841a')
]
];
}
#[DataProvider('rfcVectors')]
public function testVector(
SymmetricKeyInterface $key,
string $nonce,
string $plaintexxt,
string $aad,
string $ciphertext,
string $tag
) {
[$actual_ct, $actual_tag] = $this->aes->encrypt($key, $plaintexxt, $nonce, $aad);
$this->assertSame($ciphertext, $actual_ct, 'Ciphertext');
$this->assertSame($tag, $actual_tag, 'Authentication tag');
$decrypt = $this->aes->decrypt($key, $ciphertext, $tag, $nonce, $aad);
$this->assertSame($plaintexxt, $decrypt, 'Decryption');
}
}
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