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<?php declare(strict_types=1); /* * The MIT License (MIT) * * Copyright (c) 2014-2019 Spomky-Labs * * This software may be modified and distributed under the terms * of the MIT license. See the LICENSE file for details. */ namespace Cose\Key; use Assert\Assertion; class Key { public const TYPE = 1; public const TYPE_OKP = 1; public const TYPE_EC2 = 2; public const TYPE_RSA = 3; public const TYPE_OCT = 4; public const KID = 2; public const ALG = 3; public const KEY_OPS = 4; public const BASE_IV = 5; /** * @var array */ private $data; public function __construct(array $data) { Assertion::keyExists($data, self::TYPE, 'Invalid key: the type is not defined'); $this->data = $data; } public static function createFromData(array $data): self { Assertion::keyExists($data, self::TYPE, 'Invalid key: the type is not defined'); switch ($data[self::TYPE]) { case 1: return new OkpKey($data); case 2: return new Ec2Key($data); case 3: return new RsaKey($data); case 4: return new SymmetricKey($data); default: return new self($data); } } /** * @return int|string */ public function type() { return $this->data[self::TYPE]; } public function alg(): int { return (int) $this->get(self::ALG); } public function getData(): array { return $this->data; } public function has(int $key): bool { return \array_key_exists($key, $this->data); } /** * @return mixed */ public function get(int $key) { Assertion::keyExists($this->data, $key, sprintf('The key has no data at index %d', $key)); return $this->data[$key]; } }