Bcryptor 1.2

Python wrapper for bcrypt

Bcrypt is an implementation of a modern password hashing algorithm, based on the Blowfish block cipher, by Niels Provos and David Mazieres. It has been the default password scheme since OpenBSD 2.1.

A paper on the algorithm that explains its design decisions is available here:

http://www.usenix.org/events/usenix99/provos.html

The most important property of bcrypt is that it is adaptable to future processor performance improvements, allowing you to arbitrarily increase the processing cost of checking a password while still maintaining compatibility with your older password hashes.

This package provides a high level object oriented wrapper around bcrypt, as well as low level bindings to the C library. It uses the random number generator random.SystemRandom() to create the salts.

Use

Typical usage:

import bcryptor

hasher = bcryptor.Bcrypt()
hash = hasher.create('crack my pass')

And to validate:

>>> hasher.valid('crack my pass', hash)
True
>>> hasher.valid('Crack my pass', hash)
False

Change history

v1.2, 2010-02-24

• The license has been changed to ISC.

• For indentation, is used 4 spaces as is indicated in PEP-8.

• The manage of exceptions and imports has been improved.

• Better docstrings.

• The values of cost can be changed at instancing Bcrypt().

• Changed from Pyrex to Cython.

• The logging is managed through Yamlog.

v1.1, 2009-05-20

• Initial release.