<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * Stream decorator trait
 *
 * @property StreamInterface $stream
 */
trait StreamDecoratorTrait
{
    /**
     * @param StreamInterface $stream Stream to decorate
     */
    public function __construct(StreamInterface $stream)
    {
        $this->stream = $stream;
    }

    /**
     * Magic method used to create a new stream if streams are not added in
     * the constructor of a decorator (e.g., LazyOpenStream).
     *
     * @return StreamInterface
     */
    public function __get(string $name)
    {
        if ($name === 'stream') {
            $this->stream = $this->createStream();

            return $this->stream;
        }

        throw new \UnexpectedValueException("$name not found on class");
    }

    public function __toString(): string
    {
        try {
            if ($this->isSeekable()) {
                $this->seek(0);
            }

            return $this->getContents();
        } catch (\Throwable $e) {
            if (\PHP_VERSION_ID >= 70400) {
                throw $e;
            }
            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);

            return '';
        }
    }

    public function getContents(): string
    {
        return Utils::copyToString($this);
    }

    /**
     * Allow decorators to implement custom methods
     *
     * @return mixed
     */
    public function __call(string $method, array $args)
    {
        /** @var callable $callable */
        $callable = [$this->stream, $method];
        $result = ($callable)(...$args);

        // Always return the wrapped object if the result is a return $this
        return $result === $this->stream ? $this : $result;
    }

    public function close(): void
    {
        $this->stream->close();
    }

    /**
     * @return mixed
     */
    public function getMetadata($key = null)
    {
        return $this->stream->getMetadata($key);
    }

    public function detach()
    {
        return $this->stream->detach();
    }

    public function getSize(): ?int
    {
        return $this->stream->getSize();
    }

    public function eof(): bool
    {
        return $this->stream->eof();
    }

    public function tell(): int
    {
        return $this->stream->tell();
    }

    public function isReadable(): bool
    {
        return $this->stream->isReadable();
    }

    public function isWritable(): bool
    {
        return $this->stream->isWritable();
    }

    public function isSeekable(): bool
    {
        return $this->stream->isSeekable();
    }

    public function rewind(): void
    {
        $this->seek(0);
    }

    public function seek($offset, $whence = SEEK_SET): void
    {
        $this->stream->seek($offset, $whence);
    }

    public function read($length): string
    {
        return $this->stream->read($length);
    }

    public function write($string): int
    {
        return $this->stream->write($string);
    }

    /**
     * Implement in subclasses to dynamically create streams when requested.
     *
     * @throws \BadMethodCallException
     */
    protected function createStream(): StreamInterface
    {
        throw new \BadMethodCallException('Not implemented');
    }
}

• [D] Exception
• [F] AppendStream.php
  Delete
• [F] BufferStream.php
  Delete
• [F] CachingStream.php
  Delete
• [F] DroppingStream.php
  Delete
• [F] FnStream.php
  Delete
• [F] Header.php
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• [F] HttpFactory.php
  Delete
• [F] InflateStream.php
  Delete
• [F] LazyOpenStream.php
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• [F] LimitStream.php
  Delete
• [F] Message.php
  Delete
• [F] MessageTrait.php
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• [F] MimeType.php
  Delete
• [F] MultipartStream.php
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• [F] NoSeekStream.php
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• [F] PumpStream.php
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• [F] Query.php
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• [F] Request.php
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• [F] Response.php
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• [F] Rfc7230.php
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• [F] ServerRequest.php
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• [F] Stream.php
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• [F] StreamDecoratorTrait.php
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• [F] StreamWrapper.php
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• [F] UploadedFile.php
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• [F] Uri.php
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• [F] UriComparator.php
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• [F] UriNormalizer.php
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• [F] UriResolver.php
  Delete
• [F] Utils.php
  Delete

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

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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