车载传感网中基于聚合签名的认证方案

摘要

By using certificateless public key cryptosystem ,we constructed a new aggregated signature algorithm to achieve the authentication of information transmission between vehicle nodes in vehicular sensor network .The new scheme achieved the conditional privacy protection for vehicle users through shadow value and nodes around the roadside units generated .T he experimental results show that the scheme not only eliminates the complexity of certificate maintenance costs ,but also solves the key escrow problem , and meets the authentication , anonymity , unforgeability and traceability of message ,as well as the communication efficiency is higher ,and the message verification delay is shorter .%利用无证书公钥密码体制构造一种新的聚合签名算法,以实现车载传感网中车辆节点之间信息传输的安全认证.该方案通过路侧单元生成的影子值与周围节点进行通信,实现了车辆用户的条件隐私保护.实验结果表明,该方案不仅能消除复杂的证书维护成本,也解决了密钥托管问题,且满足了消息的认证性、匿名性、不可伪造性和可追踪性等性质,通信效率较高,消息验证时延较短.