claudusd/cryptography

A cryptography PHP 5.4 library.

Cryptography

This is a PHP5 library about the cryptography. The library uses the PHP openssl methods., _(*1)

, _(*2)

Installation

The recommended way to install Cryptography is through composer (claudusd/cryptography on packagist), _(*3)

Just create a composer.json file for your project:, _(*4)

``` json { "require": { "claudusd/cryptography": "*" } }, <sub>(*5)</sub>

And run these two commands to install it:

``` bash
$ curl -sS https://getcomposer.org/installer | php
$ composer install

Now you can add the autoloader, and you will have access to the library:, <sub>(*6)</sub>

``` php <?php, <sub>(*7)</sub>

require 'vendor/autoload.php'; ```, <sub>(*8)</sub>

Usage

Key Generation

This part of the library is used for key generation for the public key encryption., <sub>(*9)</sub>

The KeyGeneration abstract class have the methods getPrivateKey() to get the private key and getPublicKey() to get the public key., <sub>(*10)</sub>

Implementation

The library have a default implementation for generation key for RSA encryption with 4096 bits's lenght. Each instance of this class generates a new pair of key., <sub>(*11)</sub>

Encryption/Decryption

The class for encryption and decryption implement the interface EncryptionInterface and use two methods, encrypt() and decrypt()., <sub>(*12)</sub>

Implementation

By default the library have 2 implementations :, <sub>(*13)</sub>

• The First is a symmectric key encryption with the algorythm AES 256 CBC.
• The second is a public key encryption for any RSA' key lenght.

Hash

The class for hash implement the interface HashInterface and use the method hash()., <sub>(*14)</sub>

Implementation

By default the library implement the SHA1 hash., <sub>(*15)</sub>

Signature

The signature class implement the interface SignatureInterface and use two methods, sign() and verify()., <sub>(*16)</sub>

Implementation

By default the library implement the data sign with a private key and verify with a public key., <sub>(*17)</sub>