【摘 要】
：
At present,Vehicular Ad-Hoc Networks(VANETs)has been a hot research topic for researchers in the intelligent transportation.It can not only provide real-time traffic information for managers,but also
【机 构】
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School of Information Science and Technology,Zhengzhou Normal University,Zhengzhou 450044,China
【出 处】
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第十二届中国可信计算与信息安全学术会议
论文部分内容阅读
At present,Vehicular Ad-Hoc Networks(VANETs)has been a hot research topic for researchers in the intelligent transportation.It can not only provide real-time traffic information for managers,but also provide effective safety protection for drivers.However,in practical applications,the communication between vehicles is in a real-time changing network environment,which may be eavesdropping,locating and tracking.Therefore,it is essential to preserve the privacy in VANETs.Based on the Chinese remainder theorem and DSA signature algorithm,this paper proposes an efficient revocable group signature privacy protection scheme for VANETs.It can not only protect the anonymity of the vehicles,but also provide traceability for the Trusted Authority(TA)when traffics escape.At the same time,it can provide revocable functions for the vehicles when they send malicious messages or are in dispute.From the proofs of correctness and security,we know that they can not only have the properties of traceability and anonymity,but also can resist against framed attacks.According to the performance verification,we obtain it can improve the efficiency of signatures and meet the demand for real-time and efficient for VANETs.
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