Building Enterprise JavaScript Applications

Introduction to password-based authentication

When the client sends a request to create a new user, our server already requires them to provide an email and password. Therefore, the simplest way for us to implement an authentication layer is to use the users' passwords.

In the most simplistic scheme, the user must send their email and password with every request. Upon receipt of the request, our API server can then compare these credentials with the ones stored in our database; if there's a match, then the user is authenticated, otherwise, they are not.

While the preceding process allows us to authenticate a user, it is not necessarily secure for the following reasons:

• The password is kept in plaintext. According to a report by Ofcom (