two-factor

Two factor authentication using totp or hotp. Can also generate dynamic qrcodes for mobile devices.

Basic Usage: TOTP (Time-based One Time Password)

``js
var TwoFactor = require('two-factor');

/**
* Generates a base 32 secret key. Each user should have their own stored someplace safe. This is like a users password.
*
* @type {String}
*/
var secret = TwoFactor.generate.key();

/**
* Code supplied from a token generator such as Google Authenticator
*
* @type {Number}
*/
var code = req.body.code; // 123456

/**
* Check to see if a user supplied code matches their secret
*
* @type {Boolean}
*/
var isValid = TwoFactor.verify(code, secret);
`

QR Codes

The library also can generate qr codes that can be read by mobile applications. The following example shows how to create a svg string that can rendered directly in a page.

`js
/**
* Generates a SVG String that can be render in the browser
*
* @type {String}
*/
var code = auth.generate.qrcode('user_secret', 'Description', {
/**
* Create a SVG
*
* @type {String}
*/
type: 'svg',

/**
* Create it Syncronously
*
* @type {Boolean}
*/
sync: true
});
``