README

Le7 Cryptography is a lightweight PHP library designed for password encryption, decryption, verification, and random password generation. This library is dependency-free, requiring only the PHP OpenSSL extension

A small PHP library designed for encrypting, decrypting, verifying passwords, and generating random passwords securely. It relies solely on PHP's OpenSSL extension and has no additional dependencies.

Features

• Strong Encryption: Utilizes OpenSSL for robust password encryption and decryption using various algorithms such as AES-128, AES-192, AES-256, and DES-EDE3.
• Password Generation: Generates random passwords of customizable lengths, allowing you to specify the character set for password generation.
• Password Verification: Verifies whether a provided password matches a previously encrypted password, ensuring secure authentication.

Requires

• PHP 8.0 or higher
• PHP ext-openssl
• composer

Installation

To install the Cryptography Library, simply clone the repository or download the source files and include them in your PHP project.

git clone https://github.com/username/repository.git

Usage

You can specify the key directly when creating the class object, or use a custom one for each encryption/decryption operation.

// Include the Cryptography class
use rnr1721\Core\Cryptography;

// Initialize Cryptography with a key and method (optional)
$crypto = new Cryptography('your_secret_key', 'AES-256-CBC');

// Encrypt a password
$encryptedPassword = $crypto->encryptPassword('my_password');

// Decrypt an encrypted password
$decryptedPassword = $crypto->decryptPassword($encryptedPassword);

// Generate a random password
$randomPassword = $crypto->generateRandomPassword();

// Verify a password against its encrypted counterpart
$isPasswordValid = $crypto->verifyPassword('my_password', $encryptedPassword);

Or you can use key for each operations

// Include the Cryptography class
use rnr1721\Core\Cryptography;

// Initialize Cryptography with a key and method (optional)
$crypto = new Cryptography();

// Encrypt a password
$encryptedPassword = $crypto->encryptPassword('my_password','your_secret_key','AES-256-CBC');

// Decrypt an encrypted password
$decryptedPassword = $crypto->decryptPassword($encryptedPassword,'your_secret_key','AES-256-CBC');

// Generate a random password. Length is optional, default is 7
$randomPassword = $crypto->generateRandomPassword(7);

// Verify a password against its encrypted counterpart
$isPasswordValid = $crypto->verifyPassword('my_password', $encryptedPassword,'your_secret_key','AES-256-CBC');

Also you can set symbols, allowed for random password generation

// Include the Cryptography class
use rnr1721\Core\Cryptography;

// Initialize Cryptography with a key and method (optional)
$crypto = new Cryptography('your_secret_key', 'AES-256-CBC');

$crypto->setDefaultPasswordChars('abcdefgh');

$newPassword = $crypto->generateRandomPassword(5);

And you can get array of allowed methods

// Include the Cryptography class
use rnr1721\Core\Cryptography;
$crypto = new Cryptography('your_secret_key', 'AES-256-CBC');
$allowedMethods = $crypto->getAllowedMethods();

Contributing

Contributions are welcome! Please feel free to submit bug reports, feature requests, or pull requests. For major changes, please open an issue first to discuss the proposed changes.

License

This project is licensed under the MIT License - see the LICENSE file for details.