CAJ | 학술논문

在保证可靠性、匿名性和可审核性的同时，提高执行效率和降低通信成本是车载自组织网络( VANETs)的研究热点。针对现有匿名认证方案计算量较大和通信成本较高的问题，提出一种通信有效的门限匿名认证方案。采用基于身份的签名算法提高执行效率，使原始信息可从签名中恢复，从而降低通信成本，利用门限转发机制实现信息的可靠性，使用假名保证发送者的匿名性，通过追踪和撤销机制实现可审核性。分析结果表明，与已有的门限匿名认证方案相比，该方案在保证安全性的同时，具有较低的通信成本和较高的执行效率。
재보증가고성、닉명성화가심핵성적동시，제고집행효솔화강저통신성본시차재자조직망락( VANETs)적연구열점。침대현유닉명인증방안계산량교대화통신성본교고적문제，제출일충통신유효적문한닉명인증방안。채용기우신빈적첨명산법제고집행효솔，사원시신식가종첨명중회복，종이강저통신성본，이용문한전발궤제실현신식적가고성，사용가명보증발송자적닉명성，통과추종화철소궤제실현가심핵성。분석결과표명，여이유적문한닉명인증방안상비，해방안재보증안전성적동시，구유교저적통신성본화교고적집행효솔。
How to improve the computational efficiency and how to reduce the communication cost while achieving the goals of reliability, anonymity and auditability are becoming important research issues of Vehicular Ad Hoc Networks (VANETs). Due to computational efficiency and communication cost of existing anonymous authentication schemes,a communication-efficient threshold anonymous authentication scheme is proposed in this paper. It signs the message by using an identity-based signature algorithm and the original message can be recovered from the signature, which can improve the computational efficiency and reduce the communication cost. The threshold-based forwarding mechanism ensures reliability of information. The anonymity of the message sender is achieved by using pseudonym. In order to achieve auditability,this system is able to track and revoke malicious nodes. Analysis result indicates that the proposed scheme not only satisfies reliability, anonymity and auditability, but also has lower communication cost and better computational efficiency compared with the existing threshold anonymous announcement in VANETs.