openpgp-php не может расшифровать зашифрованный текст от других клиентов

#php #gnupg #openpgp

#php #gnupg #openpgp

Вопрос:

Смотрите Исходный код ниже, чтобы воспроизвести эту проблему. Шаг 1 шифрует сообщение с помощью gnupg, а шаг 2 расшифровывает сообщение с шага 1 с помощью openpgp-php. Для выполнения кода убедитесь, что у вас установлены PHP gnupg и openpgp-php. документацию openpgp-php см. в singpolyma / openpgp-php.

Чего я пытаюсь достичь, у меня есть внутренний сервер и мобильное приложение, которое может обмениваться данными только по электронной почте. Для простоты предположим, что шаг 1 — это внутренний сервер, а шаг 2 — мобильный клиент. Сообщения передаются между сервером и клиентом. Серверный сервер должен иметь возможность зашифровать сообщение, предназначенное для мобильного приложения, которое, в свою очередь, расшифровывает сообщение и отправляет зашифрованный ответ на серверную часть.

  <?php
    @include_once dirname(__FILE__).'/vendor/autoload.php';
    require_once dirname(__FILE__).'/lib/openpgp.php';
    require_once dirname(__FILE__).'/lib/openpgp_crypt_rsa.php';
    require_once dirname(__FILE__).'/lib/openpgp_crypt_symmetric.php';
    
    
    /**
     * Note: Step 1 and step 2 represents a client-server setup
     * I know it's wrong to share private keys but this was generated specifically for this test
     */
    
    /**
     * step #1 (Encryption)
     * encrypt message meant for hamfri-2@example.com at step #2 
     */
    
    // public key for hamfri-2@example.com
    $public_key1 = "-----BEGIN PGP PUBLIC KEY BLOCK-----
    
    mQENBF xv34BCAD9ttzdbXx81yKIlWi0zqRgHVYc07M9ymoqCzoIIrmaCcvkARAJ
    I4IZ36PnXxnLdfMehMDjxeT6PAJDb71oMc85jA h5c ya4b m9OwlGW/e7WgieBB
    WGt8NRnnKjwGbwDq7qd2aC2T/ZDBZQFF4wAJjoZop5Wh7NxK8QFV05ES6KXU/hJF
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    pko=
    =vTCt
    -----END PGP PUBLIC KEY BLOCK-----
    ";
    
    // private key for hamfri@example.com
    $private_key1 = "-----BEGIN PGP PRIVATE KEY BLOCK-----
    
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    = jZf
    -----END PGP PRIVATE KEY BLOCK-----
    ";
    
    $message = "Testing again and again";
    $gpg = new gnupg();
    $publicKey = $gpg->import($public_key1);
    $fingerprint = $publicKey['fingerprint'];
    // catch errors
    $gpg->seterrormode(gnupg::ERROR_EXCEPTION);
    // enable armored output 
    $gpg->setarmor(1);
    $gpg -> setsignmode(gnupg::SIG_MODE_DETACH);
    
    // encrypt plain text
    try{
        $gpg->addencryptKey($fingerprint);
        $cipher_text = $gpg->encrypt($plain_text);
        echo "n". $cipher_text ."n";
    }
    catch(Exception $e){
        die('Error '.$e->getMessage());
    }
    
    /**
     * step #2 (Decryption)
     * decrypt message from hamfri@example.com in step 1
     */
    
    //public key for hamfri@example.com
    $publickey2 = "-----BEGIN PGP PUBLIC KEY BLOCK-----
    
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    -----END PGP PUBLIC KEY BLOCK-----
    ";
    
    //private key for hamfri-2@example.com
    $privateKey2 = "-----BEGIN PGP PRIVATE KEY BLOCK-----
    
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    ZJIPOs18pko=
    =1CCf
    -----END PGP PRIVATE KEY BLOCK-----
    ";
    
    
    $encryptedPrivateKey=OpenPGP_Message::parse(OpenPGP::unarmor($privateKey2,'PGP PRIVATE KEY BLOCK'));
    
    // Try each secret key packet
    foreach($encryptedPrivateKey as $p) {
        if(!($p instanceof OpenPGP_SecretKeyPacket)) continue;
    
        $key2 = new OpenPGP_SecretKeyPacket($p->key);
    
        $msg = OpenPGP_Message::parse(OpenPGP::unarmor($cipher_text, 'PGP MESSAGE'));
    
        $decryptor = new OpenPGP_Crypt_RSA($key2);
        $decrypted = $decryptor->decrypt($msg);
        var_dump($decrypted);
    }
  

Комментарии:

1. Надеюсь, это тестовый ключ, а не ваш РЕАЛЬНЫЙ закрытый ключ. Если это не тестовый ключ, я бы рекомендовал вам отозвать его и сгенерировать новый, а затем никогда не публиковать секретный ключ.

2. Все используемые ключи являются фиктивными ключами, специально предназначенными для этого вопроса.