Research On Ring Signature Scheme In The Environment Of Internet Of Vehicles

At present,with the rapid development of the global Internet,more and more embedded devices have access to the network,forming a unique network form in the field of transportation,that is,the internet of vehicles.As the technology development is not perfect enough,there are still problems in the Internet of vehicles environment,such as data tampered or forged by attackers,vehicles hit and run,violent attack by adversaries with strong attack ability,etc.,which become the urgent problems to be solved in the field of Internet of vehicles information securityAiming at the problems of anonymity,low efficiency and post tracing in the message signature authentication of nodes in the Internet of vehicles,this paper proposes several ring signature schemes which can be used in the environment of the Internet of vehicles based on ring signature,fail stop signature,certificateless cryptosystem,message blindness and password mechanism,aiming to improve the security of data transmission in the environment of the Internet of vehicles,and makes it adapt to the complex and changeable New network environment,effectively guarantee the information security of vehicles and owners.The specific research work includes:Firstly,a password based alternative Association convertible ring blind signature scheme is designed,which combines the strong anonymity of the ring signature and the blind signature to the signature message.The scheme increases the optional Association and convertible characteristics,which makes it more secure than other schemes,and can also convert the ring signature into a common signature in special occasions.In the random oracle model,the scheme satisfies the unforgeability under adaptive selection message attack.Secondly,in order to prevent attackers with strong computing power from forging signatures in the Internet of vehicles environment,based on the fail stop group signature scheme,a fail stop ring signature scheme based on no certificate is designed,and the optional association feature is added,so that the new scheme has strong anonymity,fail stop feature and independent selection Association at the same time.Under the random oracle model,the proof scheme has the unforgeability under the adaptive selection message attack.Performance analysis shows that the new scheme is more efficient than other similar ring signature schemes.Thirdly,aiming at the problem of high communication cost and post event tracking of message authentication in the Internet of vehicles,an efficient traceable ring signature scheme based on no certificate is designed,which can provide anonymous revocation feature with the participation of the third-party arbiter when necessary.At the same time,it is proved that the scheme has the unforgeability and complete anonymity.Because the signature process and verification process of the scheme do not involve bilinear pairing operation,the operation efficiency of the scheme is higher than that of the similar ring signature scheme without certificate.