Jose\Factory\JWEFactory

Complexity

Total Complexity

5

Size/Duplication

Total Lines	84
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Importance

Changes	7
Bugs	1	Features	2

4 Methods

Rating	Name	Duplication	Size	Complexity
A	createJWEToCompactJSON()	0	6	1
A	createJWEToFlattenedJSON()	0	6	1
A	createJWE()	0	13	2
A	createJWEAndEncrypt()	0	15	1

<?php

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2016 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Factory;

use Assert\Assertion;
use Jose\Object\JWE;
use Jose\Object\JWKInterface;
use Psr\Log\LoggerInterface;

final class JWEFactory
{
    /**
     * @param mixed       $payload
     * @param array       $shared_protected_headers
     * @param array       $shared_headers
     * @param null|string $aad
     *
     * @return \Jose\Object\JWEInterface
     */
    public static function createJWE($payload, array $shared_protected_headers = [], array $shared_headers = [], $aad = null)
    {
        $jwe = new JWE();
        $jwe = $jwe->withSharedProtectedHeaders($shared_protected_headers);
        $jwe = $jwe->withSharedHeaders($shared_headers);
        $jwe = $jwe->withPayload($payload);

        if (null !== $aad) {
            $jwe = $jwe->withAAD($aad);
        }

        return $jwe;
    }

    /**
     * @param mixed                         $payload
     * @param \Jose\Object\JWKInterface     $recipient_key
     * @param array                         $shared_protected_headers
     * @param \Psr\Log\LoggerInterface|null $logger
     *
     * @return string
     */
    public static function createJWEToCompactJSON($payload, JWKInterface $recipient_key, array $shared_protected_headers, LoggerInterface $logger = null)
    {
        $jwe = self::createJWEAndEncrypt($payload, $recipient_key, $shared_protected_headers, [], [], null, $logger);

        return $jwe->toCompactJSON(0);
    }

    /**
     * @param mixed                         $payload
     * @param \Jose\Object\JWKInterface     $recipient_key
     * @param array                         $shared_protected_headers
     * @param array                         $shared_headers
     * @param array                         $recipient_headers
     * @param string|null                   $aad
     * @param \Psr\Log\LoggerInterface|null $logger
     *
     * @return \Jose\Object\JWSInterface
     */
    public static function createJWEToFlattenedJSON($payload, JWKInterface $recipient_key, array $shared_protected_headers = [], $shared_headers = [], $recipient_headers = [], $aad = null, LoggerInterface $logger = null)
    {
        $jwe = self::createJWEAndEncrypt($payload, $recipient_key, $shared_protected_headers, $shared_headers, $recipient_headers, $aad, $logger);

        return $jwe->toFlattenedJSON(0);
    }

    /**
     * @param mixed                         $payload
     * @param \Jose\Object\JWKInterface     $recipient_key
     * @param array                         $shared_protected_headers
     * @param array                         $shared_headers
     * @param array                         $recipient_headers
     * @param string|null                   $aad
     * @param \Psr\Log\LoggerInterface|null $logger
     *
     * @return \Jose\Object\JWSInterface
     */
    private static function createJWEAndEncrypt($payload, JWKInterface $recipient_key, array $shared_protected_headers = [], $shared_headers = [], $recipient_headers = [], $aad = null, LoggerInterface $logger = null)
    {
        $complete_headers = array_merge($shared_protected_headers, $shared_headers, $recipient_headers);
        Assertion::keyExists($complete_headers, 'alg', 'No "alg" parameter set in the header');
        Assertion::keyExists($complete_headers, 'enc', 'No "enc" parameter set in the header');
        $encrypter = EncrypterFactory::createEncrypter([$complete_headers['alg'], $complete_headers['enc']], ['DEF', 'ZLIB', 'GZ'], $logger);

        $jwe = self::createJWE($payload, $shared_protected_headers, $shared_headers, $aad);

        $jwe = $jwe->addRecipient($recipient_key, $recipient_headers);

        $encrypter->encrypt($jwe);

        return $jwe;
    }
}