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helix.txt

Associated article: Helix: Fast Encryption & Authentication

Tags: Security         

Published source code accompanying the article by Niels Ferguson and Bruce Schneier in which they present Helix, an algorithm that lets you perform both encryption and authentication--and does so fast.

					Helix: Fast Encryption and Authentication 
by Niels Ferguson and Bruce Schneier

Listing One

#struct provides conversion between strings and a list of words
import struct
#Some helper values and functions
_mask32 = 0xffffffffL
def _rol32( V, n ):
   #Rotate a 32-bit value ...
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