passport-jwt-cookiecombo

passport-jwt-cookiecombo

Passport strategy for lightning-fast authenticating with a JSON Web Token, based on the JsonWebToken implementation for node.js.

JWT Cookie Combo Strategy for Passport combines the authorization header for native app requests and a more secure secured, http-only, same site, signed and stateless cookie for web requests from a browser.

The best: Every single request saves both techniques a database query, because the user comes from the token. You just use req.user in your actions.

Install

npm install passport-jwt-cookiecombo

TL;DR

// =============================================================================
// Configure Strategy
// =============================================================================
var JwtCookieComboStrategy = require('passport-jwt-cookiecombo');

passport.use(new JwtCookieComboStrategy({
    secretOrPublicKey: 'StRoNGs3crE7'
}, (payload, done) => {
    return done(null, payload.user);
}));

// =============================================================================
// Sign Token
// =============================================================================
var jwt = require('jsonwebtoken');

router.post('/login', passport.authenticate('local'), (req, res) => {
    jwt.sign({ user: req.user }, 'StRoNGs3crE7', (err, token) => {
        if (err) return res.json(err);

        // Send Set-Cookie header
        res.cookie('jwt', token, {
            httpOnly: true,
            sameSite: true,
            signed: true,
            secure: true
        });
        
        // Return json web token
        return res.json({
            jwt: token
        });
    });
});

// =============================================================================
// Authenticate Requests
// =============================================================================
var express = require('express');

app.use('/api/v1', passport.authenticate('jwt-cookiecombo', {
    session: false
}), (req, res, next) => {
    return next();
});

Usage

Sample Login with Set-Cookie

// =============================================================================
// Dependencies
// =============================================================================
var cookieParser = require('cookie-parser');
var passport = require('passport');
var jwt = require('jsonwebtoken');
var express = require('express');

// =============================================================================
// Express App inits cookie with a secret
// =============================================================================
var app = express();

// Pass a secret to sign the secured http cookie
app.use(cookieParser(config.jwt.secret));

// =============================================================================
// Login route with any Passport authentication strategy
// =============================================================================
// Passport provides us the authenticated user in the request
router.post('/login', passport.authenticate('local', {
    session: false
}), (req, res) => {
    // Create and sign json web token with the user as payload
    jwt.sign({
        user: req.user
    }, config.jwt.secret, config.jwt.options, (err, token) => {
        if (err) return res.status(500).json(err);

        // Send the Set-Cookie header with the jwt to the client
        res.cookie('jwt', token, config.jwt.cookie);

        // Response json with the jwt
        return res.json({
            jwt: token
        });
    });
});

// =============================================================================
// Sample Passport Authentication where the user is set for the jwt payload
// =============================================================================
passport.use(new LocalStrategy({
    // My users have only email
    usernameField: 'email',
    session: false
}, (username, password, done) => {
    User.findOne({
        email: username
    })
    // Explicitly select the password when the model hides it
    .select('password role').exec((err, user) => {
        if (err) return done(err);
        
        // Copy the user w/o the password into a new object
        if (user && user.verifyPassword(password)) return done(null, {
            id: user._id,
            role: user.role
        });

        return done(null, false);
    });
}));

JWT Cookie Combo Passport Strategy

var JwtCookieComboStrategy = require('passport-jwt-cookiecombo');

// Authenticate API calls with the Cookie Combo Strategy
passport.use(new JwtCookieComboStrategy({
    secretOrPublicKey: config.jwt.secret,
    jwtVerifyOptions: config.jwt.options,
    passReqToCallback: false
}, (payload, done) => {
    return done(null, payload.user, {});
}));

The following possible options for a JsonWebToken will be directly passed on to jsonwebtoken.verify.

secretOrPublicKey: is a string or buffer containing either the secret for HMAC algorithms, or the PEM encoded public key for RSA and ECDSA.

jwtVerifyOptions: {

• algorithms: List of strings with the names of the allowed algorithms. For instance, ["HS256", "HS384"]. Default: HS256.
• audience: if you want to check audience (aud), provide a value here
• issuer (optional): string or array of strings of valid values for the iss field.
• ignoreExpiration: if true do not validate the expiration of the token.
• ignoreNotBefore...
• subject: if you want to check subject (sub), provide a value here
• clockTolerance: number of second to tolerate when checking the nbf and exp claims, to deal with small clock differences among different servers

}

JWT Cookie Combo global API routes protection

app.use('/api/v1', passport.authenticate('jwt-cookiecombo', {
    session: false
}), (req, res, next) => {
    return next();
});

Sample Config

module.exports = {
    jwt: {
        secret: process.env.JWT_SECRET || 'SetStrongSecretInDotEnv',
        options: {
            audience: 'https://example.io',
            expiresIn: '12h', // 1d
            issuer: 'example.io'
        },
        cookie: {
            httpOnly: true,
            sameSite: true,
            signed: true,
            secure: true
        }
    }
};

Sample Auth-Header

Key	Token
Authorization	eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjp7ImlkIjoiNTc5ZWVkZGRlMDEzNz...

Sample Token

HEADER: ALGORITHM & TOKEN TYPE

{
    "alg": "HS256",
    "typ": "JWT"
}

PAYLOAD: DATA

{
    "user": {
        "id": "577839eeddde013794ae2332",
        "role": "admin"
    },
    "iat": 1468340405,
    "exp": 1468383605,
    "aud": "https://example.io",
    "iss": "example.io"
}

VERIFY SIGNATURE

HMACSHA256 (
  base64UrlEncode(header) + "." +
  base64UrlEncode(payload),
  secret
)

License

ISC