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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * The MIT License (MIT)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) 2014-2016 Spomky-Labs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This software may be modified and distributed under the terms  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * of the MIT license.  See the LICENSE file for details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Jose\Util;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Base64Url\Base64Url;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Jose\Object\JWE;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Jose\Object\JWEInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class JWELoader  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Jose\Object\JWEInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function loadSerializedJsonJWE(array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jwe = new JWE();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jwe = $jwe->withCiphertext(Base64Url::decode($data['ciphertext']));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::populateIV($jwe, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::populateAAD($jwe, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::populateTag($jwe, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::populateSharedProtectedHeaders($jwe, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::populateSharedHeaders($jwe, $data);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($data['recipients'] as $recipient) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $encrypted_key = self::getRecipientEncryptedKey($recipient);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $recipient_headers = self::getRecipientHeaders($recipient);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->addRecipientWithEncryptedKey($encrypted_key, $recipient_headers);  | 
            
                            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $jwe;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Jose\Object\JWEInterface $jwe  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array                     $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function populateIV(JWEInterface &$jwe, array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('iv', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withIV(Base64Url::decode($data['iv']));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Jose\Object\JWEInterface $jwe  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array                     $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function populateAAD(JWEInterface &$jwe, array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('aad', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withAAD($data['aad']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Jose\Object\JWEInterface $jwe  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array                     $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function populateTag(JWEInterface &$jwe, array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('tag', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withTag(Base64Url::decode($data['tag']));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Jose\Object\JWEInterface $jwe  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array                     $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function populateSharedProtectedHeaders(JWEInterface &$jwe, array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('protected', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withEncodedSharedProtectedHeaders($data['protected']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withSharedProtectedHeaders(json_decode(Base64Url::decode($data['protected']), true));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Jose\Object\JWEInterface $jwe  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array                     $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function populateSharedHeaders(JWEInterface &$jwe, array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('unprotected', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $jwe = $jwe->withSharedHeaders($data['unprotected']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function getRecipientHeaders(array $data)  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (array_key_exists('header', $data)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return $data['header'];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return [];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return null|string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function getRecipientEncryptedKey(array $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_key_exists('encrypted_key', $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return Base64Url::decode($data['encrypted_key']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.