Re: "Alien" cryptanalysis

From: Tom St Denis (tomstdenis_at_iahu.ca)
Date: 05/19/03 

Date: Mon, 19 May 2003 20:59:16 GMT

Douglas A. Gwyn wrote:
> Tom St Denis wrote:
>
>> The fact that Skipjack has 32 rounds does not make it elegant though.
>> By comparison RC5 with 16 rounds is not only faster, smaller and IMHO
>> more elegant its also just as secure [more if you have a bigger key
>> which is possible in RC5 not Skipjack].
>
>
> David Wagner didn't say that it was the 32 rounds that made
> it elegant.
> And how do you come to the conclusion that RC5 is "just as
> secure"? Are you the first in the non-Black world to develop
> a correct and comprehensive theory of cryptosystem security?
> Why haven't you published this?

Secure this!

[picture of a$$ deleted]

Normally when someone says secure they mean secure from known cryptanalysis.

And as far as anyone has published RC5 with 16 rounds is not vulnerable
to any attacks [short of weak keys].

Tom

Relevant Pages

  • Re: "Alien" cryptanalysis
    ... > The fact that Skipjack has 32 rounds does not make it elegant though. ... > elegant its also just as secure [more if you have a bigger key which is ...
    (sci.crypt)
  • Re: Unbreakable Encryption - Scenarios - What encryption method would be best?
    ... > Tom St Denis wrote: ... IIRC 7 rounds are enough for CPA and 10 rounds for ... ram] for 10 rounds. ... Make a 16-bit Feistel [which would only require 2.5KB ...
    (sci.crypt)
  • Re: XORShift PRNG as a diffusion structure
    ... > Tom St Denis wrote: ... as a 4x32 bitsliced cipher the best 32x32 high weight transform [made ... Over four rounds that is 14 active 4x4 sboxes. ...
    (sci.crypt)
  • Re: sandbox scrounging
    ... "Benjamin Choi" escreveu na mensagem ... > and given enough rounds it might actually be secure (although I don't ... > really trust any block cipher with less than 8 rounds). ... > imagine 128-bit multiplications being fast though. ...
    (sci.crypt)
  • Re: "Alien" cryptanalysis: Gwyn a "two-bit troll"?
    ... >>Tom, you're burning all sorts of bridges both ahead of and behind you ... >way Tom hasn't properly cleaned the toilets using the toilet brush: ... and I've made 16 rounds. ... You know Clem your OK I couldn't have stated it better myself. ...
    (sci.crypt)
Quantcast