<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * This code is partially based on the Rack-Cache library by Ryan Tomayko,
 * which is released under the MIT license.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel\HttpCache;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Interface implemented by HTTP cache stores.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface StoreInterface
{
    /**
     * Locates a cached Response for the Request provided.
     */
    public function lookup(Request $request): ?Response;

    /**
     * Writes a cache entry to the store for the given Request and Response.
     *
     * Existing entries are read and any that match the response are removed. This
     * method calls write with the new list of cache entries.
     *
     * @return string The key under which the response is stored
     */
    public function write(Request $request, Response $response): string;

    /**
     * Invalidates all cache entries that match the request.
     */
    public function invalidate(Request $request);

    /**
     * Locks the cache for a given Request.
     *
     * @return bool|string true if the lock is acquired, the path to the current lock otherwise
     */
    public function lock(Request $request): bool|string;

    /**
     * Releases the lock for the given Request.
     *
     * @return bool False if the lock file does not exist or cannot be unlocked, true otherwise
     */
    public function unlock(Request $request): bool;

    /**
     * Returns whether or not a lock exists.
     *
     * @return bool true if lock exists, false otherwise
     */
    public function isLocked(Request $request): bool;

    /**
     * Purges data for the given URL.
     *
     * @return bool true if the URL exists and has been purged, false otherwise
     */
    public function purge(string $url): bool;

    /**
     * Cleanups storage.
     */
    public function cleanup();
}

• [F] AbstractSurrogate.php
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• [F] Esi.php
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• [F] HttpCache.php
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• [F] ResponseCacheStrategy.php
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• [F] ResponseCacheStrategyInterface.php
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• [F] Ssi.php
  Delete
• [F] Store.php
  Delete
• [F] StoreInterface.php
  Delete
• [F] SubRequestHandler.php
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• [F] SurrogateInterface.php
  Delete

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Enhancing Payment Security: The Role of Encryption and Tokenization in Digital Transactions

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational technologies that are pivotal in this effort are encryption and tokenization.
Encryption is a process that transforms data into a secure format, known as ciphertext, which can only be deciphered using a specific decryption key. This means that even if data is intercepted during transmission, it remains unreadable and protected from unauthorized access. Encryption is essential in safeguarding sensitive payment information, such as credit card details and personal data, during online transactions.
Tokenization, on the other hand, involves substituting sensitive data with unique identifiers or "tokens." These tokens serve as placeholders and have no value outside of the specific transaction context. If intercepted, tokens are meaningless and cannot be used to access the original sensitive data. This method significantly reduces the risk of fraud and data breaches, as the actual payment information is not stored or transmitted.
Together, encryption and tokenization form a powerful security framework. Encryption ensures that data is protected during transmission, while tokenization minimizes the risk of exposing sensitive information by replacing it with secure, non-sensitive tokens.
These technologies are integral to modern payment platforms, providing a robust defense against cyber threats. By implementing advanced encryption and tokenization techniques, businesses can enhance the security of digital transactions, ensuring that users' financial and personal information remains safe. This comprehensive approach not only builds user trust but also fortifies the overall security infrastructure of digital payment systems. As cyber threats evolve, the continued advancement of encryption and tokenization will be crucial in maintaining secure and reliable payment processes.

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• Payment