【摘要】 针对车载自组织网络的特点,该文利用双线性对提出了一个新的基于身份的签密方案,并在随机预言模型中给出了安全性证明.在假设Bilinear Diffie-Hellman问题是困难的条件下,该方案被证明是安全的.与已有的基于身份的签密方案相比,该方案计算量和传输代价小,适合用于车载网安全通信.更多还原

【Abstract】 According to the characteristics of vehicular netw orks,this paper presents a identity-based signcryption scheme using the bilinear pairings and proves its security in the random oracle model. The proposed scheme is proved to be secure assuming that the Bilinear Diffie-Hellman problem is hard. Compared w ith the existing identity based signcryption schemes,the new scheme has low er computation cost and communication overhead. It is suitable for secure communication of vehicular netw orks.更多还原