Study Of The Communication Security Protocol For Indoor Monitoring System Based On Mobile Cloud Computing

By utilizing the computing advantages and storage characteristics of the cloud,the mobile cloud video surveillance system provides better services for the Internet of Things video surveillance system.However,the complex system model also brings more security challenges,especially to the privacy of video data.The security of video surveillance systems has become the key to their industry development.This paper analyzes the security problems and related solutions of video surveillance systems through market research and data collection.The paper combines the IoT video cameras with mobile clouds and uses intelligent small devices as architecture terminals.The cloud acts as data transmission channels and storage devices of the system.This paper designs identity authentication protocol and video data security communication protocol,builds a mobile cloud video surveillance system model,and focuses on the security of the system.The specific work is as it follows:(1)A lightweight identity authentication protocol is designed.The authentication process of the protocol does not require certificate authentication and bilinear pairing operation.What's more,it fully utilizes the point multiplication operation on the elliptic curve is fully By combining with the Diffie-Hellman algorithm,the method of transmitting the fresh value in clear text is replaced,which improves the system security.In the protocol design,the two-way authentication between the cloud and the user is realized,and the KGC is integrated into the cloud,and the authentication is completed only by two rounds of communication,which has high security performance and communication efficiency.(2)A block-based sharing improvement scheme based on ciphertext policy attribute-based encryption is proposed.In the protocol,the access tree model is set for the camera,so that only the user who meets the established policy can decrypt the video data,and the key negotiates the original key,and the ciphertext needs the extended key decryption.In addition,the system architecture satisfies the scalability of the device,and the protocol uses the attribute set to define users,which is convenient for sharing video between users.(3)An experimental verification system is developed to evaluate the performance of the above protocol.The Windows platform and the Internet of Things secondary development board are used to implement the protocol designed in this paper,verify its security,and compare with the existing protocols,analyze its performance and communication overhead.Compared with several authentication protocols commonly used in intelligent video surveillance systems,the authentication protocol of this paper has less computational burden on the mobile terminal,faster computing speed.The designed video data security communication protocol has higher transmission efficiency of video data than the existing secure communication scheme,and fulfils the requirements of personalized encryption policies for mobile users and tightens the security of the video sharing mechanism.Therefore,the system model designed by this paper is suitable for the popular application of small smart devices in the future.