Re: Initializing GFSR Generators.

From: Cyber Vagrant (cybervagrant@yahoo.com)
Date: 02/23/03 

From: cybervagrant@yahoo.com (Cyber Vagrant)
Date: 23 Feb 2003 13:57:55 -0800

> GOVERNMENT ABILITIES
>
> Since we have no information about what the government
> guys can do, we cannot know. Anything beyond that is
> just speculation, perhaps informed by what information
> we do have.
>

So it appears, Uncle Sam is hearty employer of "Security through
Obscurity"

> Trying to keep something from the government when they
> want to see it probably is a loosing proposition anyway.
> An actual technical break is perhaps the most unlikely
> of the many ways in which government guys can expose
> information.
>

That helps to keep things in perspective.

> KEY MANAGEMENT

Thats still on the horizon for me.

> Diffusion per se is not necessary in stream ciphers.
> That is a characteristic of s-boxes and the emulated
> huge s-boxes we call conventional block ciphers.
> Because that model inherently has diffusion, diffusion
> must somehow be created and supplied. Stream ciphers
> are a different model, and may or may not have
> diffusion as desired.
 
I was considering turning it into a block cipher with a length of 256
bytes, which would be a convient length. It seems to me now whith a
little more thought that block ciphers are better implemented in
hardware, because of the increase in parallel processing. It would
require a lot of mixers.

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