A New Quaternary Chaotic Sequence Encryption Algorithm

The chaotic sequence is pseudo-random and sensitive on initial value. It can be used as secure sequence cipher. This paper presents a kind of new encryption algorithm based on chaotic system,including the generator and the pseudorandom capability test of the quaternary chaotic sequence. The encryption and decryption of Chinese document is realized. The simulation indicates that the encryption algorithm has the advantages of the anti-attack capability,small quantity of calculation,fast encryption and large extensive key's choice.