From: ichudov@algebra.com (Igor Chudov @ home)
Date: Sat, 30 Nov 1996 10:36:55 -0800 (PST)
To: wichita@cyberstation.net
Subject: Re: IPG Algorith Broken!
In-Reply-To: <Pine.BSI.3.95.961130021602.19278D-100000@citrine.cyberstation.net>
Message-ID: <199611301830.MAA14034@manifold.algebra.com>
MIME-Version: 1.0
Content-Type: text


wichita@cyberstation.net wrote:
> > There *IS NO SUCH PROOF*.  Just like you can't prove that god created the
> > universe, or that Oswald shot Kennedy, and so on and so forth.  It can't
> > be proven.  It never has been proven, and it never will be proven.  People
> > have new ideas, new algorithms are invented.  Someday, somebody will crack
> > _all_ the cryptosystems that have now been invented.
> > 
> 
> To repeat Frantz', I thought Shannon proved OTPs were unbreakable. I can
> also assure you that they are unbreakable, because you cannot solve a
> three variable equation where only one variable is known, ie. the
> ciphertext. That is a fact, not an opinion like God, or Oswald, there are
> facts and opinions. It is a fact that OTPs are unbreakable and it is a
> fact that our system is unbreakable. Q.E.D. for the very same reasons
> except that we must use exclusionary proof instead of inclusionary proof
> like Shannon. 

Don, can you give us this proof please? I mean really complete proof, 
not vague references to other people's theorems and metadiscussions. 

I do agree with you that your opponents freuquently attack you without
actually proving what they say. This is unfortunate. I do hope that you, 
though, can be above your detractors able to produce real proofs without
resorting to namecalling and character assassination.

I.e., your bashing of Paul Bradley, for example, may or may not
concvince me that Paul does not understand cryptography. It will NOT
convince me, though, that IPG system is good. I am not interested in
your attacks on persons, however right you may be. Rather, it is
important that you give us a good proof of security of IPG system.

Thanks

	- Igor.