Crypto-fields for Django

This package provides database backed, encrypted fields for Django. The fields use database internal mechanisms to encrypt and verify strings completely inside the database. This functionality is interesting for use with passwords that are stored in a database as it allows the database to manage salting, hashing, and verification of the passwords.

Support notes

Currently only PostgreSQL is supported as a database backend. I would be happy if someone with experience in MySQL or other databases that support encryption would provide hints or implementations for their favourite database.

Usage

Using cryptofield is easy:

from django.db import models
import cryptofield

class ModelWithCrypto(models.Model):
    password = cryptofield.CryptoField()

Keyword arguments

The CryptoField class supports the following keyword arguments:

Keyword	Description	Values
algorithm	The hashing algorithm to use	bf (default), md5, xdes, des

Requirements (PostgreSQL)

To use this package with PostgreSQL, make sure that the database in use has the pgcrypto extension activated. To do so, issue the following command to the desired database:

CREATE EXTENSION IF NOT EXISTS pgcrypto;

If no error occurs, the CryptoField class can now be used with the database.