How can I decrypt an encrypted configuration value?

Question

This is the code that I'm using to get the value from a specific field saved via the admin panel.

protected $_paymentData;
protected $_scopeConfig;
protected $logger;

public function __construct(
    \Magento\Framework\Model\Context $context,
    \Magento\Framework\Registry $registry,
    \Magento\Framework\Api\ExtensionAttributesFactory $extensionFactory,
    \Magento\Framework\Api\AttributeValueFactory $customAttributeFactory,
    \Magento\Payment\Helper\Data $paymentData,
    \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
    \Magento\Payment\Model\Method\Logger $logger,
    \Magento\Framework\Module\ModuleListInterface $moduleList,
    \Magento\Framework\Stdlib\DateTime\TimezoneInterface $localeDate,
    \Magento\Directory\Model\CountryFactory $countryFactory,
    \Stripe\Stripe $stripe,
    \Inchoo\Stripe\Model\StripeFactory $stripeFactory,
    array $data = array()
) {
    parent::__construct(
        $context,
        $registry,
        $extensionFactory,
        $customAttributeFactory,
        $paymentData,
        $scopeConfig,
        $logger,
        $moduleList,
        $localeDate,
        null,
        null,
        $data
    );
    $this->_scopeConfig = $scopeConfig;
    $this->logger = $logger;
    $this->initializeData($data);
}
 public function getPaymentKey(){
   $key= $this->_scopeConfig->getValue('payment/webpay/keyid');
    echo $key;
    exit; 
}

Echo Result: idfrk3-45pfnrkhwneirgplbmisniepssnie:hirtw45

True Key: p92GBhcQl7TklHOsWcxBk4eOmL6wpQWBG9nT2Qcf

Answer 1

\Magento\Framework\App\Config\ScopeConfigInterface::getValue will return the decrypted value. When ScopeConfigInterface::getValue returns an encrypted value, the configuration option is setup incorrectly. A correct implementation of an encrypted configuration value is:

Vendor/Module/etc/adminhtml/system.xml

Here we add an obscure configuration value in the path payment/webpay/keyid the critical things here is ensuring the field has type="obscure" and uses Magento\Config\Model\Config\Backend\Encrypted for the backend_model. This is how Magento knows to use a masked form field and encrypt any user input on save.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="payment">
            <group id="webpay">
                <field id="keyid" translate="label" type="obscure" sortOrder="100" showInDefault="1" showInWebsite="1" showInStore="0">
                    <label>Key Id</label>
                    <backend_model>Magento\Config\Model\Config\Backend\Encrypted</backend_model>
                </field>
            </group>
        </section>
    </system>
</config>

Vendor/Module/etc/config.xml

Adding backend_model="Magento\Config\Model\Config\Backend\Encrypted" here tells Magento the config value should be decrypted when retrieved with ScopeConfigInterface::getValue

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
    <default>
        <payment>
            <webpay>
                <keyid backend_model="Magento\Config\Model\Config\Backend\Encrypted" />
            </webpay>
        </payment>
    </default>
</config>

Vendor/Module/etc/di.xml

This adds the configuration path to the sensitive array and prevents the path's value from being included when dumping the store configuration.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Config\Model\Config\TypePool">
        <arguments>
            <argument name="sensitive" xsi:type="array">
                <item name="payment/webpay/keyid" xsi:type="string">1</item>
            </argument>
        </arguments>
    </type>
</config>

Answer 2

Finally Get Success In Decrypt code...

protected $_encryptor;

public function __construct(
    \Magento\Framework\Encryption\EncryptorInterface $encryptor,
) {
    $this->_encryptor = $encryptor;
    parent::__construct($context);
}
$test = 'dfrk3-45pfnrkhwneirgplbmisniepssnie';
$test = $this->_encryptor->decrypt($test);
echo $test;

Share and help others..

Answer 3

If you have n98-magerun2.phar installed, you can get a decrypted config value with something like:

php bin/n98-magerun2.phar config:store:get --decrypt payment/webpay/keyid

You can also set encrypted config values from the command line with something like:

php bin/n98-magerun2.phar config:store:set --encrypt payment/webpay/keyid NEW_KEY_ID_VALUE_HERE

You can get n98-magerun2.phar from here: https://github.com/netz98/n98-magerun2

Answer 4

In case you want to decrypt some value using some key. Put below code into decrypt-config-value.php in the root of your magento project. This code need 2 constants to work properly

1. ENV_CRYPT is the environment crypt key, you can find this in the file app/code/env.php. Remember EACH environment has a different key, so you CAN'T get the production value with the staging key. You MUST use the production key to get production values. Line 21.

2. PATH_ENC_DATA is the path where the encrypted variable is saved. Line 24.

<?php

use Magento\Framework\App\Bootstrap;

require __DIR__ . '/app/bootstrap.php';

$bootstrap = Bootstrap::create(BP, $_SERVER);

$objectManager = $bootstrap->getObjectManager();

$state = $objectManager->get('Magento\Framework\App\State');
$state->setAreaCode('frontend');


######################################################################################################################

/**
 * ONLY 2 REQUIREMENTS
 */
// Available in the file: app/etc/env.php crypt => key =>
const ENV_CRYPT = 'e601ed01ef0c5a8766d373fdc4f8b23d';

//Path where is located the encrypted data
const PATH_ENC_DATA = 'path/to_encrypted/data';

/**
 * @var \Magento\Framework\Encryption\EncryptorInterfaceFactory $ef
 */
$ef = $objectManager->get('Magento\Framework\Encryption\EncryptorInterfaceFactory');

class CustomDeploymentConfig extends \Magento\Framework\App\DeploymentConfig
{
    public function get($key = null, $defaultValue = null)
    {
        return ENV_CRYPT;
    }
}

/**
 * @var CustomDeploymentConfig $d
 */
$d = $objectManager->get(CustomDeploymentConfig::class);

/**
 * @var \Magento\Framework\Encryption\EncryptorInterface $e
 */
$e = $ef->create(['deploymentConfig' => $d]);

$resourceConnection = $objectManager->get('Magento\Framework\App\ResourceConnection');
$connection = $resourceConnection->getConnection();
$query = "SELECT value FROM core_config_data WHERE path = '" . PATH_ENC_DATA . "';";
$result = $connection->fetchOne($query);

echo ">>>", $e->decrypt($result), "<<<\n";

Run php decrypt-config-value.php using console.

Answer 5

You can try with below method for payment encryption method to get value,

You have to replace \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig, with below class path, \Magento\Payment\Gateway\ConfigInterface This is works fine,

   <?php
/**
 * Copyright © 2015 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Vendor\Module\Gateway\Http;

use Magento\Payment\Gateway\Http\TransferBuilder;
use Magento\Payment\Gateway\Http\TransferFactoryInterface;
use Magento\Payment\Gateway\Http\TransferInterface;
use Magento\Payment\Gateway\ConfigInterface;

class TransferFactory implements TransferFactoryInterface
{
    private $config;

    private $transferBuilder;

    public function __construct(
        ConfigInterface $config,
        TransferBuilder $transferBuilder
    ) {
        $this->config = $config;
        $this->transferBuilder = $transferBuilder;
    }


    public function getPaymentKey()
    {
        echo $this->config->getValue('payment/webpay/keyid')
    }
}

Answer 6

Try with below code for json decode value,

class Paymentmodule
{
    protected $jsonEncoder;
    protected $jsonDecoder;

    public function __construct(
        ..//
        \Magento\Framework\Json\DecoderInterface $jsonDecoder
    ) {
        ..//
        $this->jsonDecoder = $jsonDecoder;
    }

    public function getPaymentKey()
    {
        $key= $this->_scopeConfig->getValue('payment/webpay/keyid');
        $config = $this->jsonDecoder->decode($key);
        echo $key;
    }

}