From: ichudov@Algebra.COM (Igor Chudov @ home)
Date: Tue, 9 Sep 1997 13:17:33 +0800
To: bd1011@hotmail.com (Nobuki Nakatuji)
Subject: Re: Gao's Chaos Cryptosystem Algorithim
In-Reply-To: <19970909041824.464.qmail@hotmail.com>
Message-ID: <199709090458.XAA10188@manifold.algebra.com>
MIME-Version: 1.0
Content-Type: text



Nobuku,

Could you please write your encryption algorithm in some more formal
language (like C or Pascal) more completely? At least to me, the way you
presented it is a bit hard to understand.

Thank you

igor

Nobuki Nakatuji wrote:
> 
> 
> P(i) Plaintext,C(i) Ciphertext,K(j) Key,Ch(i) Chaos signal,
> L Irrational number
> 
> 
> P(),C()-->Manage in byte,Length supposing that n byte.
> K()-->Character line from ASCII CODE,Length supposing that m.
> 
> 
> Ch(n)
> begin
> Xn+1=aXn(1.0-Xn)
> return Xn+1
> end
> 
> 
> f(K)
> begin
> w = Sigmaj strtoul(K(j))j
> 
> delay=int(w/L)
> return(double)(w/L-delay)
> end
> 
> 
> 1.K input
> 2.delay generato
> 3.Ch(i) generato
> 4.P(i) acquire
> 5.C(i)=P(i) XOR Ch(i+delay)
> 6.C(i) output
> 
> 
> 
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	- Igor.