Package Exports

passport-totp

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (passport-totp) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Passport-TOTP

Passport strategy for two-factor authentication using a TOTP value.

This module lets you authenticate using a TOTP value in your Node.js applications. By plugging into Passport, TOTP two-factor authentication can be easily and unobtrusively integrated into any application or framework that supports Connect-style middleware, including Express. TOTP values can be generated by hardware devices or software applications, including Google Authenticator.

Note that in contrast to most Passport strategies, TOTP authentication requires that a user already be authenticated using an initial factor. Requirements regarding when to require a second factor are a matter of application-level policy, and outside the scope of both Passport and this strategy.

Install

$ npm install passport-totp

Usage

Configure Strategy

The TOTP authentication strategy authenticates a user using a TOTP value generated by a hardware device or software application (known as a token). The strategy requires a setup callback.

The setup callback accepts a previously authenticated user and calls done providing a key and period used to verify the HOTP value. Authentication fails if the value is not verified.

passport.use(new TotpStrategy(
  function(user, done) {
    TotpKey.findOne({ userId: user.id }, function (err, key) {
      if (err) { return done(err); }
      return done(null, key.key, key.period);
    });
  }
));

Authenticate Requests

Use passport.authenticate(), specifying the 'totp' strategy, to authenticate requests.

For example, as route middleware in an Express application:

app.post('/verify-otp', 
  passport.authenticate('totp', { failureRedirect: '/verify-otp' }),
  function(req, res) {
    req.session.authFactors = [ 'totp' ];
    res.redirect('/');
  });

Examples

For a complete, working example, refer to the two-factor example.

Tests

$ npm install
$ make test

Credits

Jared Hanson

License

The MIT License