README

Designed to be a vendor-agnostic implementation of various Two-Factor Authentication solutions.

Developed by Paragon Initiative Enterprises for use in our own projects. It's released under a dual license: GPL and MIT. As with all dual-licensed projects, feel free to choose the license that fits your needs.

Requirements

• PHP 7.2+
  • As per Paragon Initiative Enterprise's commitment to open source, all new software will no longer be written for PHP 5.

Installing

composer require paragonie/multi-factor

Example Usage

<?php
use ParagonIE\MultiFactor\OneTime;
use ParagonIE\MultiFactor\OTP\TOTP;

$seed = random_bytes(20);

// You can use TOTP or HOTP
$otp = new OneTime($seed, new TOTP());

if (\password_verify($_POST['password'], $storedHash)) {
    if ($otp->validateCode($_POST['2facode'], time())) {
        // Login successful    
    }
}