Research On Security Mechanism Of Wireless Meter Reading System

"Internet +" relying on information technology and networking driving the development of various industries to a new height.Such as advanced measurement infrastructure to become an important part of wireless meter reading technology development and smart grid construction.Even through wireless meter reading technology brings user data collection conveniently and fast,but faced with information security issues.Such as whether the meter reading data is true,reliable and timely,user's privacy information is disclosure and so on.Aiming at the security threats faced by the wireless meter reading system in the power industry,a hybrid key management scheme for wireless meter reading system is proposed,which include key establishment,update and revocation process.Considering the constraints of the complex environment,computing power and communication overhead of the system,a lightweight certificateless exchange algorithm based on Elliptic Curve Key Exchange(ECDH)and a key update scheme based on unidirectional hash key chain technology are proposed.The key exchange scheme has the characteristics of authenticating,anti-enemy hand-armed attacks,man-in-the-middle attacks,and the certificateless mechanism reduces the overhead and scheme complexity of the key negotiation.The key update reduce communication overhead while maintaining the key freshness.It has forward and backward security,and one-time pad security level.This paper constructs a secure communication protocol for wireless meter reading system in power industry,proposes authentication mechanism for join the network stage based on zero knowledge proof.This paper uses the method of anonymous authentication that at the stage of identity authentication do not provide the real identity to the master server;Proposes an anonymous two-way authentication mechanism based on privacy protection to ensure that the identity and communication information of both parties communicate with each other and prevent attacks such as replay attacks,man-in-the-middle attacks and avoid disclosure of user privacy information;established for the power industry wireless meter reading system DoS attack detection and tolerance model.Based on the NS2 network simulation and the establishment of the wireless meter reading system physical platform for the program security,effectiveness and cost of the test and verify.The experimental results show that the security mechanism designed in this paper can provide effective identity authentication,ensure the authenticity of the communication information,the authenticity of the sourse of information,the freshness and reliability of the message and so on.It can effectively prevent the camouflage attack,illegal message injection attacks and replay attacks;to avoid the disclosure of user privacy information.The program also shows low communication and computational overhead,and does not place an excessive burden on the system due to security algorithms.