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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime\Tests;
use Exception;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
use ParagonIE\ConstantTime\Base64UrlSafe;
use RangeException;
use TypeError;
use function base64_encode;
use function bin2hex;
use function random_bytes;
use function rtrim;
use function strlen;
use function strtr;
class Base64UrlSafeTest extends TestCase
{
use CanonicalTrait;
/**
* @throws Exception
* @throws TypeError
*/
public function testRandom(): void
{
for ($i = 1; $i < 32; ++$i) {
for ($j = 0; $j < 50; ++$j) {
$random = random_bytes($i);
$enc = Base64UrlSafe::encode($random);
$this->assertSame(
$random,
Base64UrlSafe::decode($enc)
);
$this->assertSame(
strtr(base64_encode($random), '+/', '-_'),
$enc
);
$unpadded = rtrim($enc, '=');
$this->assertSame(
$unpadded,
Base64UrlSafe::encodeUnpadded($random)
);
$this->assertSame(
$random,
Base64UrlSafe::decode($unpadded)
);
}
}
$random = random_bytes(1 << 20);
$enc = Base64UrlSafe::encode($random);
$this->assertTrue(strlen($enc) > 65536);
$this->assertSame(
$random,
Base64UrlSafe::decode($enc)
);
$this->assertSame(
strtr(base64_encode($random), '+/', '-_'),
$enc
);
}
/**
* @throws Exception
*/
public function testUnpadded(): void
{
for ($i = 1; $i < 32; ++$i) {
$random = random_bytes($i);
$encoded = Base64UrlSafe::encodeUnpadded($random);
$decoded = Base64UrlSafe::decodeNoPadding($encoded);
$this->assertSame(
bin2hex($random),
bin2hex($decoded)
);
}
}
#[DataProvider("canonicalDataProvider")]
/**
* We need this for PHP before attributes
* @dataProvider canonicalDataProvider
*/
public function testNonCanonical(string $input)
{
$w = Base64UrlSafe::encodeUnpadded($input);
Base64UrlSafe::decode($w);
Base64UrlSafe::decode($w, true);
// Mess with padding:
$x = $this->increment($w);
Base64UrlSafe::decode($x);
// Should throw in strict mode:
$this->expectException(RangeException::class);
Base64UrlSafe::decode($x, true);
}
protected function getNextChar(string $c): string
{
return strtr(
$c,
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
'BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_A'
);
}
public static function invalidCharactersProvider(): array
{
return [
['ab+d'],
['ab/d'],
['ab.d'],
['ab:d'],
['ab[d'],
];
}
/**
* Detect issue underlying #67 with ext-sodium
*
* @return void
* @throws Exception
*/
public function testStrictPaddingSodium(): void
{
for ($i = 1; $i < 32; ++$i) {
$random = random_bytes($i);
$encoded = Base64UrlSafe::encode($random);
$decoded = Base64UrlSafe::decode($encoded, true);
$this->assertSame($decoded, $random);
}
}
/**
* @dataProvider invalidCharactersProvider
*/
#[DataProvider("invalidCharactersProvider")]
public function testInvalidCharacters(string $encoded)
{
$this->expectException(RangeException::class);
Base64UrlSafe::decode($encoded);
}
}
|
