Passwordless-RethinkDBStore

This module provides token storage for Passwordless, a node.js module for express that allows website authentication without password using verification through email or other means. Visit the project's website for more details.

Tokens are stored in a RethinkDB database and are hashed and salted using bcrypt by default. It is also possible to provide a different hashing library (see Initialization for an example).

Usage

First, install the module:

$ npm install passwordless-rethinkdbstore --save

Afterwards, follow the guide for Passwordless. A typical implementation may look like this:

var passwordless = require('passwordless');
var RethinkDBStore = require('passwordless-rethinkdbstore');

passwordless.init(new RethinkDBStore({host: '127.0.0.1', port: 28015, db: 'main'}));

passwordless.addDelivery(
    function(tokenToSend, uidToSend, recipient, callback) {
        // Send out a token
    });

app.use(passwordless.sessionSupport());
app.use(passwordless.acceptToken());

Initialization

new RethinkDBStore([options], [hashLib]);

• [options]: (Object) Optional. This can include options of the node.js RethinkDB client as described in the docs.
• [hashLib] (Object) Optional. This can be specified in order to provide a custom hashing library. This object takes two functions: hash(token, cb) and verify(token, hashedToken, cb). The following example uses the hashing library Argon2.

var argon2 = require('argon2');
var store = new RethinkDBStore([options], {
    hash: function(token, cb) {
        argon2.generateSalt()
            .then(function(salt) {
                argon2.hash(token, salt)
                .then(cb.bind(null, null))
                .catch(cb);
            });
    },
    verify: function(token, hashedToken, cb) {
        argon2.verify(hashedToken, token)
            .then(function(match) {
                if (match) {
                    return cb(null, match);
                }
                else {
                    return cb();
                }
            })
            .catch(cb);
    }
});

Hash and salt

As the tokens are equivalent to passwords (even though only for a limited time) they have to be protected in the same way. By default passwordless-rethinkdbstore uses bcrypt with automatically created random salts. To generate the salt 10 rounds are used. Alternatively, a custom hash and verify function can be specified (see Initialization), which should call the respective functions of some secure hashing library (e.g. Argon2, winner of the Password Hashing Competition 2015).

Tests

$ npm test

License

MIT License

Author

River Grimm [email protected]