Simulation of Image Encryption Algorithm Based on Chaotic Sequence and DES
Shijue Zheng · Jisuanji fangzhen · 2011
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.