Simulation of Image Encryption Algorithm Based on Chaotic Sequence and DES

Research is based on chaos theory,the data encryption technology.View of the current chaotic system using data encryption computing overhead when large,computing efficiency is not high,presents a sequence of chaotic systems iterative encryption approach.First mapped into a chaotic sequence generated by the pseudo-random sequence of integers formed to act as encryption keys,and then uniformly distributed in a given interval.Re-use of Logistic iteration formula for a number of different and,after replacement or access to encrypted plaintext ciphertext.Through the design of chaotic sequence encryption algorithm,so that encryption and decryption operations overhead and operational efficiency has been improved;algorithm analysis shows that the algorithm has a strong anti-brute-force attack and anti-key chosen plaintext attacks.The simulation results show that the method is effective and feasible,and data encryption / decryption good results.