Research On The Authentication Technology And Algorithm For Internet Of Vehicles

The Internet of Vehicles(IoV)paradigm aims to achieve efficient management,decision-making and control of intelligent transportation through real-time perception among humans,vehicles,roadside units and trusted center,which can provide a convenient,comfortable and safe driving way,and in turn enables intelligent transportation.However,increasing reliance on wireless communication,control and computing technology makes IoV more vulnerable to potential attacks such as remote intrusion and control,trajectory tracking.Therefore,efficient authentication solutions preventing unauthorized visitors need to be addressed to cope with these issues.Currently,the main problem of IoV security is that the authentication mechanism only considers one single aspect of security performance,which cannot satisfy the diversified security demands of multi-communication scenarios.In order to address this problem,the thesis designs an identity authentication protocol for the communication scenario of vehicle and trust center,and a interbehavior authentication method for the communication scenario of vehicle and vehicle.The main contents and values of the thesis are organized as follows:1.Study the intrinsic mechanism of authentication and analyze the characteristics of communication scenarios as well as gradient security demands.Point out the security risks and performance challenge of identity authentication mechanism combined with the key technologies such as digital signature,public key cryptography and bilinear pairing mapping.Accordingly,the necessity of the thesis research is presented.Then,construct the theoretical framework of authentication mechanism by taking the relationships between different communication scenarios into account.Finally,design the identity authentication protocol for the communication scenario of vehicle and trust center to satisfy the requirements of security enhancement and privacy-preserving as well as avoiding key escrow within an acceptable range of time delay,which will lay a security basis for other communication scenarios.2.Considering the behavioral autonomous characteristics of vehicles and the temporary or transience of communication links,the thesis mainly designs a trust behavior authentication method based on communication interaction to provide the judgment basis for the legitimacy of vehicle node behavior.Propose the function evaluated trust from three different dimensions including: information trust function,dynamic reliability function and safety state function.Finally,design trust evaluation and decision-making modules to compute message credibility to ensure information authenticity in vehicle-vehicle communication scenario.3.Finally,the security and correctness of this authentication protocol is proved and analyzed by using the Burrows–Abadi–Needham(BAN)logic,and the performance feasibility verification of the scheme is given as well.To sum up,the thesis designs an identity authentication protocol for the communication scenario of vehicle and trust center,and presents a behavior trust method to verify the legitimacy and authenticity of vehicle message for vehicle-vehicle communication scenario.Which take both the inherent evidence(such as correct key or password)and trust relationship(high autonomy or uncertainty)into account.Achieve the interconnection mechanism through designing security authentication protocol and efficient trust behavior authentication method to control security risks for different communication scenarios.Which can improve the honesty and authenticity for the cooperation among nodes to maintain a high reliable network environment.