Cellular Network Transmission Scheme Of Chaotic Secure Communication And Its Mobile Phone Implementation

With the development of multimedia technology and the rapid spread of cellular mobile networks,the processing,transmission and storage of large amounts of data such as pictures,audio,video,and files become reality at any time and place,and the incidents of these data being stolen often occur..Therefore,data security is a key point that needs to be solved urgently,and we need to provide it with more secure and reliable protection.For audio and video data encryption with large amount of data and real-time transmission,mature DES,AES and other symmetric encryption algorithms have been unable to meet the requirements.Therefore,as a member of the chaotic secure communication field,we have also designed related security algorithms.To solve this problem.This thesis designs a four-dimensional hyperchaotic security algorithm based on the Android platform to realize the secure transmission of voice data in the cellular network.The focus is on the design of four-dimensional hyperchaotic secrecy algorithm,which uses a driving responsive synchronous chaotic system,and four-way encryption and decryption of voice data through feedback to improve encryption security;and through the server program deployed on the public network.The voice data is forwarded to break through the limitation of NAT and realize the transmission of voice data in the cellular network.The whole system is realized by software development under the support of hardware platforms such as Android mobile phone + Linux server.After a series of voice call tests,the experimental results are obtained,and the experimental results show that the system has good confidential transmission performance..Combined with the experimental results,the statistical characteristics analysis,anti-differential analysis and key sensitivity analysis of the chaotic security system are carried out.The analysis results show that the chaotic system has better performance.The innovation points and significance realized by this topic are:(1)Voice data with chaotic encryption is transmitted in the cellular network,This has great practical significance for the expansion of chaotic encryption technology in thetransmission range and transmission mode.(2)Generally,the audio data acquired by the Android mobile phone is hard-coded,and the hard-coded method generates a large amount of data,which is obviously disadvantageous for the audio data transmitted in real time.Therefore,this topic uses the ADPCM encoding method to compress the amount of audio data generated by the hard code of the mobile phone to a quarter of the original,thereby greatly improving the transmission efficiency.(3)Designed a four-dimensional hyperchaotic system and implemented the algorithm,which is more suitable for encrypting voice data than traditional encryption technology.