《计算机应用》唯一官方网站 ›› 2022, Vol. 42 ›› Issue (6): 1695-1701.DOI: 10.11772/j.issn.1001-9081.2021061449

• 2021年全国开放式分布与并行计算学术年会(DPCS 2021)论文 • 上一篇    

车载自组网中可追踪可撤销的多授权中心属性基加密方案

吴静雯1, 殷新春1,2(), 宁建廷3   

  1. 1.扬州大学 信息工程学院, 江苏 扬州 225127
    2.扬州大学广陵学院, 江苏 扬州 225000
    3.福建师范大学 计算机与网络空间安全学院, 福州 350117
  • 收稿日期:2021-08-16 修回日期:2021-10-01 接受日期:2021-11-08 发布日期:2022-01-10 出版日期:2022-06-10
  • 通讯作者: 殷新春
  • 作者简介:吴静雯(1996—),女,江苏扬州人,硕士研究生,主要研究方向:车载自组网通信安全
    宁建廷(1988—),男,浙江龙游人,教授,博士生导师,博士,CCF高级会员,主要研究方向:应用密码学、信息安全。
  • 基金资助:
    国家自然科学基金资助项目(61972094)

Traceable and revocable multi-authority attribute-based encryption scheme for vehicular ad hoc networks

Jingwen WU1, Xinchun YIN1,2(), Jianting NING3   

  1. 1.College of Information Engineering,Yangzhou University,Yangzhou Jiangsu 225127,China
    2.Guangling College of Yangzhou University,Yangzhou Jiangsu 225000,China
    3.College of Computer and Cyber Security,Fujian Normal University,Fuzhou Fujian 350117,China
  • Received:2021-08-16 Revised:2021-10-01 Accepted:2021-11-08 Online:2022-01-10 Published:2022-06-10
  • Contact: Xinchun YIN
  • About author:WU Jingwen, born in 1996, M. S. candidate. Her research interests include communication security of vehicular ad hoc networks.
    NING Jianting,born in 1988,Ph. D.,professor. His research interests include applied cryptography,information security.
  • Supported by:
    National Natural Science Foundation of China(61972094)

摘要:

保障消息传输的机密性是对车载自组网(VANET)中通信的基本安全需求。在使用对称群组密钥加密消息的模式下,系统管理者难以追踪内部攻击者,因此,提出了基于属性的车载自组网加密方案。该方案能实现对恶意车辆的追踪和撤销,并能细粒度地划分车辆的访问权限;与此同时,该方案允许多个授权中心彼此独立地分发属性及其对应密钥,防止被妥协的授权中心伪造其他授权中心负责管理的属性密钥,从而保障了多机构间通信协作的高度安全性。该方案在q-DPBDHE2假设下被证明具有不可区分性;而且与同类方案进行加解密开销对比的实验结果表明,当涉及的属性个数为10时,该方案的解密开销为459.541 ms,说明该方案适用于车载自组网中的通信加密。

关键词: 车载自组网, 属性基加密, 多授权中心, 白盒可追踪, 用户撤销

Abstract:

Ensuring the confidentiality of message transmission is a fundamental security requirement for communications in Vehicular Ad hoc NETworks (VANETs). While utilizing symmetric group keys to encrypt messages, it is hard for system manager to trace inner attackers. Therefore, an attribute-based encryption scheme for VANETs was proposed. The scheme enables tracking and revocation of malicious vehicles and fine-grained division of vehicle access rights; meanwhile, the scheme allows multiple authority centers to distribute attributes and their corresponding keys independently, preventing compromised authority centers from forging attribute keys that are managed by other authorities, thus guaranteeing a high security for communication and collaboration among multiple institutions. This scheme was proven indistinguishable under q-DPBDHE2 (q-Decisional Parallel Bilinear Diffie-Hellman Exponent) assumption; and experimental results of encryption and decryption overhead comparison of this scheme and similar schemes show that while the number of attributes is 10, the decryption overhead of the proposed scheme is 459.541 ms, indicating that the scheme is suitable for communication encryption in VANETs.

Key words: Vehicular Ad hoc NETwork (VANET), attribute-based encryption, multi-authority center, white-box traceable, user revocation

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