Re: VMPC stream cipher - no short cycles possible

From: Phil Carmody (thefatphil_demunged_at_yahoo.co.uk)
Date: 10/24/03 

Date: 24 Oct 2003 17:28:25 +0300

"Bartosz Zoltak" <QPbzoltak(without "QP")@vmpcfunction.com> writes:

> Phil Carmody wrote:
> > I caught a "acts better than a random
> > permutation as chances of falling into a short cycle are lower
> > than for a random pemutation", but I'm still fishing.
>
> May I ask wat you mean by "caught" or "fishing" here? If you are
> fishing for weaknesses of VMPC - this is perfectly OK, I am doing the
> same thing myself.

I was fishing for you to describe a weakness in VMPC. I was
workingon the principle that it's easier for me to get the
cypher's author to find a weakness than for me to find one
myself. However, my catch was only relevant to small N, and
as N isn't small the tiddler has been thrown back.

I shall keep reading the threads, looking for curious descriptions
to go past, and I shall hook them out again, and see if they do
reveal any actual weakness.

Phil 

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