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Example code of atrapalo/urlcrypt

Informations about the package urlcrypt

URLCrypt

Latest Stable Version Minimum PHP Version Build Status Code Coverage Scrutinizer Code Quality

Ever wanted to securely transmit (not too long) pieces of arbitrary binary data in a URL? URLCrypt makes it easy.

This class is based on the URLCrypt from Aaron Francis.

URLCrypt uses 256-bit AES symmetric encryption to securely encrypt data, and encodes and decodes Base 32 strings that can be used directly in URLs.

This can be used to securely store user ids, download expiration dates and other arbitrary data like that when you access a web application from a place that doesn't have other authentication or persistence mechanisms (like cookies):

Important: As a general guideline, URL lengths shouldn't exceed about 2000 characters in length, as URLs longer than that will not work in some browsers and with some (proxy) servers. This limits the amount of data you should store with URLCrypt.

Patches are welcome; please include tests!

Requirements

URLCrypt requires PHP >= 7.0 as well as the openssl PHP extension.

Installation

You can install URLCrypt via Composer with composer require atrapalo/urlcrypt or by adding the following to your composer.json file:

Usage

Note that your key has to be a lower-case hex string.

Why not Base 64?

URLCrypt uses a modified Base 32 algorithm that doesn't use padding characters, and doesn't use vowels to avoid bad words in the generated string.

Base64 results in ugly URLs, since many characters need to be URL escaped.

Development

Clone the repository and do a composer install in the root directory of the library to install the development dependencies. Run the tests with phpunit from the root directory.

License

This library is licensed under the MIT License - see the COPYING file for details.

All versions of urlcrypt with dependencies

PHP Build Version
Package Version
Requires php Version ^7.0
ext-openssl Version *
ext-mbstring Version *
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