Research on Data Encryption Algorithm on Basis of Chaos Theory

The research is based on chaos theory and the data encryption technology.In view of the large spending and low computing efficiency of current data encryption system with chaotic,a sequence of chaotic systems iterative encryption approach is presented.First,a chaotic sequence is mapped into the pseudo-random sequence of integers,which acts as the encryption keys,and then uniformly distributed in a given interval.The exclusive or operation is carried out with the result from Logistic iteration formula and the replaced unencrypted data to get the ciphertext.Through the design of chaotic sequence encryption algorithm,the encryption and decryption operations spending and operational efficiency have been improved.Algorithm analysis shows that the algorithm has a strong ability of anti-brute-force attack and anti-key chosen plaintext attacks.The simulation results show that the method is effective and feasible,and the effects of data encryption / decryption are good.