cipher system
6.Contrasted to the other methods such as LFSR, the most potent of CA is the architecture which adapted to the VLSI implementation, and the System on Chip (SoC) is the idea implementation of the cipher algorithm, this makes the applications of CA in cryptography not only can simplify the design of cipher system, but also has the performance advantages.
8.In this paper, we have proved following theorem: For a cipher system, if its source is ergodic, the kay space is periodic and that those probability distrobutions of ciphertxts of different kay are different then the kay will be opened by the Bayesian opponent when sufficient length ciphertexts is intercepted.

