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

By the way, here is a concise implementation of salsa20 in C:

  http://www.nightsong.com/phr/crypto/salsa20.c

maybe it could be converted to python more conveniently than
converting the reference implementation.