2fa-plus

Implementation of two-factor authentication in Node, made simple.

Credit for original implementation on which this has been abstracted from goes to node-2fa - Jeremy Scalpello.

This has been reworked from the ground up to:
- Not be reliant on Google Charts for QR code generation, and instead return a base64-png image.
- Full typescript support.

---

There are a number of applications which support 2-Factor Authentication, namely

- Authy iPhone | Android | Chrome | Linux | OS X
- Google Authenticator iPhone | Android
- Microsoft Authenticator iPhone | Android

This module uses notp which implements TOTP (RFC 6238)
(the _Authenticator_ standard), which is based on HOTP (RFC 4226)
to provide codes that are exactly compatible with all other _Authenticator_ apps and services that use them.

Usage
=====

``bash
npm install 2fa-plus --save
`

$3

`ts
import { generateSecret } from "2fa-plus";

const secret = generateSecret('Name', 'account@demo.com');

// output: { secret, uri, qr }
`

$3

`ts
import { generateToken } from "2fa-plus";

const token = generateToken(secret.secret);

// output: token
`

$3

`ts
import { verifyToken } from "2fa-plus";

const isValid = verifyToken(secret, token);

// output: true/false
``