README

This is the library for encrypting data with a key (password will be generate as per your parameters set) in PHP.

WHY ANOTHER LIBRARY? This was intended to developed for cross-platform AES Encryption here as PHP was missing. My main objective is to create library for AES-256-CBC to contribute PHP package for Cross-Platform-AES package, more features will be added whenever I gets time.

Features

• Support for Random IV (initialization vector) for encryption and decryption. Randomization is crucial for encryption schemes to achieve semantic security, a property whereby repeated usage of the scheme under the same key does not allow an attacker to infer relationships between segments of the encrypted message.
• Support for SHA-256 for hashing the key. Never use plain text as encryption key. Always hash the plain text key and then use for encryption. AES permits the use of 256-bit keys. Breaking a symmetric 256-bit key by brute force requires 2^128 times more computational power than a 128-bit key. A device that could check a billion billion (10^18) AES keys per second would in theory require about 3×10^51 years to exhaust the 256-bit key space.
• PHP-7 Support since mcrypt has been deprecated.

Installation

You can install the package via composer:

composer require ahsankhatri/cryptolib-php

Dependencies

The bindings require the following extensions in order to work properly:

• openssl

If you use Composer, these dependencies should be handled automatically. If you install manually, you'll want to make sure that these extensions are available.

Usage

With Random IV

$string     = 'The quick brown fox jumps over to the lazy dog.';
$secretyKey = 'BlVssQKxzAHFAUNZbqvwS+yKw/m';

$encryption = new \MrShan0\CryptoLib\CryptoLib();

$cipher  = $encryption->encryptPlainTextWithRandomIV($string, $secretyKey);
echo 'Cipher: ' . $cipher . PHP_EOL;

$plainText = $encryption->decryptCipherTextWithRandomIV($cipher, $secretyKey);
echo 'Decrypted: ' . $plainText . PHP_EOL;

With Generated IV

$string     = 'The quick brown fox jumps over to the lazy dog.';
$secretyKey = 'BlVssQKxzAHFAUNZbqvwS+yKw/m';

$encryption = new \MrShan0\CryptoLib\CryptoLib();
$iv         = $encryption->generateRandomIV();

$cipher = $encryption->encrypt($string, $secretyKey, $iv);
echo 'Cipher: ' . $cipher . PHP_EOL;

$plainText = $encryption->decrypt($cipher, $secretyKey, $iv);
echo 'Decrypted: ' . $plainText . PHP_EOL;

Testing

composer test

Changelog

Please see CHANGELOG for more information on what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email ahsankhatri1992@gmail.com instead of using the issue tracker.

Credits

• Ahsaan Muhammad Yousuf
• All Contributors

License

The MIT License (MIT). Please see License File for more information.