Re: A poorman's stream encryption algorithm
 From: MokKong Shen <mokkong.shen@xxxxxxxxxxx>
 Date: Fri, 26 Mar 2010 18:58:53 +0100
unruh wrote:
For what? 16 bit RC4? No idea, but I suspect that one is fine, except
that one needs to discard a fair amount of the intial stream to get rid
of the intial biases.
As I recall, the original recommendations were to discard only a few (
something like 10) of the intial output from 8 bit rc4, but practice
discards something like 256 to play it safe. Exactly how many to discard
from rc4 16 bit I have no idea. But I also have absolutely no idea why
you want to use 16 bit rc4. Your initial reason has proven to be
wrong.
I recall that you wrote: "If you really want to impliment RC4 on words
you just need a 60000 entry mixing matrix." I wanted to indicate that's
not that simple. For in my humble view one has to investigate the
question whether a single swapping per step is sufficient as you
claimed.
M. K. Shen
.
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