Research On Security Authentication And Privacy Protection Mechanism Of Vehicular Cloud Computing

In the Vehicular Cloud Computing(VCC),smart vehicles can be considered as service providers to collaborate with each other to perform various tasks such as automatic driving,traffic management,and information distribution.Essentially,the VCC coordinates the vehicle's computing,storage,networking,and sensing resources to balance the conflict between service requirements and hardware limitations,which greatly enhances our driving experience and driving safety.At the same time,the VCC is also faced with serious security issues,such as the attacker disguising himself as a legitimate user,and then collecting information through illegal means resulting in information leakage;the attacker traces the real identity of the vehicle user,in violation of its privacy information to achieve its illegal purpose and so on.Therefore,the deployment and implementation of the VCC must meet the security requirements such as message authentication,non-association,and user identity anonymity,traceability,etc.In addition,the mobility of the vehicle also leads to difficulties in certification management.At present,there have been some research results on security authentication and privacy protection in VANET and Cloud Computing.Based on this,this paper combines the characteristics of the VCC and designs a more comprehensive security authentication and privacy protection schemes based on the VCC..This paper first analyzes the definition,architecture classification,specific applications of vehicle cloud and the security and privacy issues faced by it,and defines the research significance and research direction.Secondly,the security authentication and privacy protection schemes currently applied in the VANET are analyzed,applicable to the security requirements of the VCC,and focuses on analyzing the security schemes based on the group signature.Thirdly,the VCC structure formed by the collaboration among vehicles is constructed and its security requirements are analyzed.Combining the characteristics of the VCC formation and duration is short and the requirements for authentication delay are high,this paper have designed a security authentication mechanism that can achieve privacy protection based on identity-based signcryption scheme and short-group signature scheme,and has performed performance evaluation and security analysis.Finally,this paper uses SUMO and NS-3 to simulate the designed scheme and analyze the network performance parameters such as end-to-end delay,throughput,packet delivery ratio and public key generation time.Simulation results show that the proposed security scheme to meet the proposed VCC architecture of anonymity,source authentication,message integrity verification,traceability,low communication overhead and low latency,and improves the VCC performance such as terminal delay and throughput.