Modern Python Cookbook

Defining the User class

This class definition provides an example of a definition of an individual User object:

1. Import modules that are required to create and check the password:

        import hashlib 
        import os 
        import base64 

Other useful modules include json so that a User object can be properly serialized.

2. Define the User class:

        class User: 

3. Since we'll be changing some aspects of password generation and checking, we'll provide two constants as part of the overall class definition:

        DIGEST = 'sha384' 
        ROUNDS = 100000 

We'll use the SHA-384 digest algorithm. This provides 64-byte summaries. We'll use 100,000 rounds for the Password-Based Key Derivation Function 2 (PBKDF2) algorithm.

4. Most of the time, we'll create users from a JSON document. ...