<?php
declare(strict_types=1);
namespace ParagonIE\HPKE\Tests\AEAD;
use ParagonIE\HPKE\AEAD\ChaCha20Poly1305;
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\ChaCha20Poly1305')]
class ChaCha20Poly1305Test extends TestCase
{
private ChaCha20Poly1305 $aes;
public function setUp(): void
{
$this->aes = new ChaCha20Poly1305();
}
public static function rfcVectors(): array
{
return [
'DHKEM(X25519, HKDF-SHA256), HKDF-SHA256, ChaCha20Poly1305' => [
new SymmetricKey(sodium_hex2bin('ad2744de8e17f4ebba575b3f5f5a8fa1f69c2a07f6e7500bc60ca6e3e3ec1c91')),
sodium_hex2bin('5c4d98150661b848853b547f'),
sodium_hex2bin('4265617574792069732074727574682c20747275746820626561757479'),
sodium_hex2bin('436f756e742d30'),
sodium_hex2bin('1c5250d8034ec2b784ba2cfd69dbdb8af406cfe3ff938e131f0def8c8b'),
sodium_hex2bin('60b4db21993c62ce81883d2dd1b51a28')
]
];
}
#[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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