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Gao's Chaos Cryptosystem Algorithim (fwd)



Forwarded message:

> From: "Nobuki Nakatuji" <[email protected]>
> Subject: Gao's Chaos Cryptosystem Algorithim
> Date: Mon, 08 Sep 1997 21:18:24 PDT

> 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

Nice but as noted by others, without a better explanation of what is going
on with Ch(i) the algorithm as detailed is useless.


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