







【摘要】為提高車載自組織網絡中消息認證的機密性,提出了一種可證安全性的高效無證書混合簽密方案。基于車載自組織網絡系統模型,在車輛進行注冊后引入假名自生成算法,并在簽密算法中采用混合簽密計算方式。理論證明與試驗驗證結果表明,與現有無證書簽密方案相比,該方案在保護車輛隱私信息的同時,降低了可信中心和路側單元的計算量,計算開銷與通信開銷保持較低水平,最后,在隨機預言模型中證明了該方案的不可偽造性和機密性,并且能夠抵御各類攻擊。
主題詞:車載自組織網絡 無證書簽密 無雙線性映射 隨機預言模型
中圖分類號:TN918" "文獻標志碼:A" "DOI: 10.19620/j.cnki.1000-3703.20230960
A Certificateless Hybrid Signcryption Scheme for Vehicular Ad-Hoc Networks
Lin Feng1,2, Luo Jingming1, Zhu Zhiqin2
(1. College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065; 2. College of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065)
【Abstract】In order to improve the confidentiality of message authentication in vehicle-mounted ad hoc networks, an efficient certificateless hybrid signcryption scheme with provable security is proposed. Based on the model of the vehicle-mounted ad hoc network system, a pseudonymous self-generation algorithm is introduced after the vehicle is registered, and a hybrid signcryption calculation method is adopted in the signcryption algorithm. Through theoretical proof and experimental verification, compared with the existing certificateless signcryption scheme, the proposed scheme not only protects the privacy information of the vehicle, but also reduces the computation cost of the trusted center and the roadside unit, and keeps the time overhead and communication overhead at a low level, which proves the unforgeability and confidentiality of the proposed scheme in the random oracle model, and can resist various attacks.
Key words: VANET, Certificateless signcryption, No bilinear mapping, Random prediction model
【引用格式】 林峰, 羅鏡明, 朱智勤. 一種適用于車載自組織網絡的無證書混合簽密方案[J]. 汽車技術, 2024(10): 56-62.
LIN F, LUO J M, ZHU Z Q. A Certificateless Hybrid Signcryption Scheme for Vehicular Ad Hoc Networks[J]. Automobile Technology, 2024(10): 56-62.
1 前言
車載自組織網絡[1](Vehicular Ad-hoc NETwork,VANET)主要由車載單元(On Board Unit,OBU)和路側單元(Road Side Unit,RSU)構成,在車輛行駛中,VANET能夠實時共享車輛的運行狀態及周邊的交通信息,有效提升駕駛安全性及舒適度,優化駕駛體驗。由于VANET傳遞的交通信息較為敏感,因而其信息安全問題備受關注。
VANET的通信方式可分為車輛對基礎設施(Vehicle-to-Infrastructure,V2I)通信和車輛對車輛(Vehicle-to-Vehicle,V2V)通信。其中,V2V通信允許相鄰車輛進行消息互換,減少交通擁堵,但入侵者可通過竊聽、跟蹤等方式對車輛發送的消息進行攻擊,導致接收車輛無法鑒別信息的真實性和完整性,由此對車輛身份隱私造成危害[2]。
通常,VANET使用消息簽密方法實現車輛身份、消息的機密性和消息的不可否認性驗證[3]。……