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Base64 backward compatibility and performance #400

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merged 2 commits into from
Jun 18, 2024
Merged

Base64 backward compatibility and performance #400

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b902abf
Base64 tests
sleptor May 15, 2024
f88c973
Fix test
Minishlink Jun 18, 2024
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52 changes: 39 additions & 13 deletions tests/EncryptionTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -19,34 +19,50 @@
*/
final class EncryptionTest extends PHPUnit\Framework\TestCase
{
public function testBase64Encode(): void
{
$plaintext = 'When I grow up, I want to be a watermelon';
$this->assertEquals('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24', $this->base64Encode($plaintext));
}

public function testBase64Decode(): void
{
// Base64 URL-safe, no padding
$this->assertEquals('When I grow up, I want to be a watermelon', $this->base64Decode('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24'));
$this->assertEquals('<<???>>', $this->base64Decode('PDw_Pz8-Pg'));

// Standard Base64
$this->assertEquals('When I grow up, I want to be a watermelon', $this->base64Decode('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24='));
$this->assertEquals('<<???>>', $this->base64Decode('PDw/Pz8+Pg=='));
}

public function testDeterministicEncrypt(): void
{
$contentEncoding = "aes128gcm";
$contentEncoding = 'aes128gcm';
$plaintext = 'When I grow up, I want to be a watermelon';
$this->assertEquals('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24', Base64Url::encode($plaintext));

$payload = Encryption::padPayload($plaintext, 0, $contentEncoding);
$this->assertEquals('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24C', Base64Url::encode($payload));
$this->assertEquals('V2hlbiBJIGdyb3cgdXAsIEkgd2FudCB0byBiZSBhIHdhdGVybWVsb24C', $this->base64Encode($payload));

$userPublicKey = 'BCVxsr7N_eNgVRqvHtD0zTZsEc6-VV-JvLexhqUzORcxaOzi6-AYWXvTBHm4bjyPjs7Vd8pZGH6SRpkNtoIAiw4';
$userAuthToken = 'BTBZMqHH6r4Tts7J_aSIgg';

$localPublicKey = Base64Url::decode('BP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');
$salt = Base64Url::decode('DGv6ra1nlYgDCS1FRnbzlw');
$localPublicKey = $this->base64Decode('BP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');
$salt = $this->base64Decode('DGv6ra1nlYgDCS1FRnbzlw');

[$localPublicKeyObjectX, $localPublicKeyObjectY] = Utils::unserializePublicKey($localPublicKey);
$localJwk = new JWK([
'kty' => 'EC',
'crv' => 'P-256',
'd' => 'yfWPiYE-n46HLnH0KqZOF1fJJU3MYrct3AELtAQ-oRw',
'x' => Base64Url::encode($localPublicKeyObjectX),
'y' => Base64Url::encode($localPublicKeyObjectY),
'x' => $this->base64Encode($localPublicKeyObjectX),
'y' => $this->base64Encode($localPublicKeyObjectY),
]);

$expected = [
'localPublicKey' => $localPublicKey,
'salt' => $salt,
'cipherText' => Base64Url::decode('8pfeW0KbunFT06SuDKoJH9Ql87S1QUrd irN6GcG7sFz1y1sqLgVi1VhjVkHsUoEsbI_0LpXMuGvnzQ'),
'cipherText' => $this->base64Decode('8pfeW0KbunFT06SuDKoJH9Ql87S1QUrdirN6GcG7sFz1y1sqLgVi1VhjVkHsUoEsbI_0LpXMuGvnzQ'),
];

$result = Encryption::deterministicEncrypt(
Expand All @@ -59,17 +75,17 @@ public function testDeterministicEncrypt(): void
);

$this->assertEquals(Utils::safeStrlen($expected['cipherText']), Utils::safeStrlen($result['cipherText']));
$this->assertEquals(Base64Url::encode($expected['cipherText']), Base64Url::encode($result['cipherText']));
$this->assertEquals($this->base64Encode($expected['cipherText']), $this->base64Encode($result['cipherText']));
$this->assertEquals($expected, $result);
}

public function testGetContentCodingHeader(): void
{
$localPublicKey = Base64Url::decode('BP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');
$salt = Base64Url::decode('DGv6ra1nlYgDCS1FRnbzlw');
$localPublicKey = $this->base64Decode('BP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');
$salt = $this->base64Decode('DGv6ra1nlYgDCS1FRnbzlw');

$result = Encryption::getContentCodingHeader($salt, $localPublicKey, "aes128gcm");
$expected = Base64Url::decode('DGv6ra1nlYgDCS1FRnbzlwAAEABBBP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');
$expected = $this->base64Decode('DGv6ra1nlYgDCS1FRnbzlwAAEABBBP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27mlmlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A8');

$this->assertEquals(Utils::safeStrlen($expected), Utils::safeStrlen($result));
$this->assertEquals($expected, $result);
Expand All @@ -81,7 +97,7 @@ public function testGetContentCodingHeader(): void
#[dataProvider('payloadProvider')]
public function testPadPayload(string $payload, int $maxLengthToPad, int $expectedResLength): void
{
$res = Encryption::padPayload($payload, $maxLengthToPad, "aesgcm");
$res = Encryption::padPayload($payload, $maxLengthToPad, 'aesgcm');

$this->assertStringContainsString('test', $res);
$this->assertEquals($expectedResLength, Utils::safeStrlen($res));
Expand All @@ -99,4 +115,14 @@ public static function payloadProvider(): array
[str_repeat('test', 1019).'te', Encryption::MAX_PAYLOAD_LENGTH, Encryption::MAX_PAYLOAD_LENGTH + 2],
];
}

protected function base64Decode(string $value): string
{
return Base64Url::decode($value);
}

protected function base64Encode(string $value): string
{
return Base64Url::encode($value);
}
}