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<?php declare(strict_types=1); /* * The MIT License (MIT) * * Copyright (c) 2014-2020 Spomky-Labs * * This software may be modified and distributed under the terms * of the MIT license. See the LICENSE file for details. */ namespace Jose\Component\Signature; use InvalidArgumentException; use Jose\Component\Checker\TokenTypeSupport; use Jose\Component\Core\JWT; final class JWSTokenSupport implements TokenTypeSupport { public function supports(JWT $jwt): bool { return $jwt instanceof JWS; } /** * @throws InvalidArgumentException if the signature index does not exist */ public function retrieveTokenHeaders(JWT $jwt, int $index, array &$protectedHeader, array &$unprotectedHeader): void { if (!$jwt instanceof JWS) { return; } if ($index > $jwt->countSignatures()) { throw new InvalidArgumentException('Unknown signature index.'); } $protectedHeader = $jwt->getSignature($index)->getProtectedHeader(); $unprotectedHeader = $jwt->getSignature($index)->getHeader(); } }