On the Use of Asynchronous Cellular Automata in Symmetric-Key Cryptography

This paper addresses a symmetric key cryptosystem using rule 57 asynchronous cellular automata. It is experimentally shown that the proposed cryptosystem achieves the avalanche effect after 32000 iterations. The vulnerability of the proposed scheme is discussed and note that, brute-force attack is practically infeasible. The effectiveness of the scheme is compared with other cryptosystems and finally, it is also report that the proposed cryptosystem can easily be implemented in hardware.