Research On Image Encryption Method Based On The Combination Of Magic Cube Transformation And DNA Coding

In recent years,with the rapid development of multimedia technology and the Internet,the most important way for people to exchange information is multimedia communication.People use the Internet to exchange information and online shopping.A large number of public and private images and audio information transmitted through the network,so the security and confidentiality of network information becomes more important.However,due to a large number of hackers rampant,and with the improvement of means of deciphering,information security has been a serious threat.Therefore,in order to securely store images and protect the information is not easy to be leaked,the image encryption has become an important and effective measures.In this thesis,the main research work is as follows:Firstly,this thesis mainly studies the basic theories related to image encryption,including cryptography theory,chaos theory and image encryption technology.This thesis focus on the image encryption algorithm based on magic cube transformation theory and the image encryption algorithm based on DNA(Deoxyribonucleic Acid)encoding.And the two algorithms are simulated by MATLAB.Secondly,the performance of Logistic chaotic sequences is studied and simulated.The binary sequence generated for the chaotic system is prone to agglomeration when it is transformed into an integer sequence.This thesis will improve the generation of chaotic binary.In this thesis,the stepwise parameter comparison method is proposed,and the simulation results show that the optimization method significantly improves the agglomeration phenomenon.Finally,combining the idea of magic cube transform and the idea of DNA coding,this thesis proposes an image encryption method based on the combination of magic cube transformation and DNA coding.On the basis of studying the existing cube rotation mode,the rotation mode is improved and applied with the optimized binary generation method in the proposed algorithm.The simulation results show that the optimized encryption algorithm has more key space than the ordinary encryption algorithm.The key has more sensitivity and security,and the security of the encryption algorithm is enhanced.The simulation results show that the optimized encryption algorithm has more key space than the ordinary encryption algorithm.The key has more sensitivity and security,and the security of the encryption algorithm is enhanced.