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Gao's Chaos Cryptosystem Algorithim



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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