Pure Python Salsa20 Stream Cipher Implementation

[Paul Rubin]

betabrain.honshu at gmail.com writes:
> for those of you who are familiar with the micropledge.com project,
> here is a good opportunity to spend or earn something:
> http://micropledge.com/projects/pysalsa20

I don't understand why a pure python version of salsa20 would be
interesting.  Is there some application that uses salsa20, that's
worth being able to interoperate with in pure python?

If you just want a stream cipher in pure python (including its
standard library), the fastest way seems to be able to use the sha
module as a building block:

  http://www.nightsong.com/phr/crypto/p3.py