Research On The Security System Of Grain Warehouse Video Monitoring Based On National Secret Algorithm

Our country’s grain reserves rank first in the world,characterized by large scale,wide distribution and difficult supervision.Video surveillance has provided the vital technical means for our country grain reserve remote supervision.At present,China’s central and local grain storage video monitoring system deployment has been achieved full coverage,the formation of the national,provincial and grain storage three-level monitoring system.At the same time,the video monitoring system of grain depot also faces the problems of identity authentication,data transmission security and video content security.According to the mandatory GB35114-2017 Technical Requirements for Network Information Security of Public Security Video Surveillance,this paper designs the front-end video security module and the integrated video security service machine of the grain depot,realizes the identity authentication and video stream data encryption of the network camera,hard disk video recorder and other video front-end devices based on the domestic password,and puts forward the video security architecture of the grain depot in line with the three-level remote surveillance framework of the state,province and grain depot,and constructs the prototype system.The main research contents are as follows:1.The front-end video security module is designed and implemented,and the problems of identity authentication and video data encryption of video front-end devices such as network cameras and hard disk recorders are solved.Using domestic cryptographic algorithms SM2 and SM3 to realize the authentication mechanism based on digital certificate,and using domestic cryptographic algorithm SM4 to encrypt the video data symmetrically.2.Design the integrated video security service machine,realize the functions of security signaling service,certificate service,video cipher operation,key management and so on,and facilitate the upgrading and transformation of video monitoring system of grain depot.As the core function of the integrated video security service,the certificate service system uses the SM2 elliptic curve cryptography algorithm and SM3 hash algorithm to generate and issue digital certificates.3.A video surveillance security system structure for grain depots was constructed.According to the three-level remote supervision system of grain industry,the paper puts forward the video monitoring system of grain depot and develops its prototype by analyzing the requirement of each level.According to the security requirement of video monitoring system in grain depot and the requirement of GB35114-2017,this paper uses SM2 and SM3 domestic commercial cipher algorithm to realize identity authentication and video data signature verification,and uses SM4 domestic symmetric key algorithm to realize video encryption.