基于代理重签名的车载自组网消息认证研究
发布时间：2019-06-06 03:43
【摘要】：当今道路交通事故的频发,已经成为全社会必须面对的严峻问题之一。车载自组织网络(VANET,Vehicular Ad-hoc Network)是专门为减少交通事故和增强道路安全所设计的车辆通信自组织网络。但传统的安全和隐私保护协议并不完全适用于车载自组网,迫切需要设计新的适用于VANET的安全认证和隐私保护协议。代理重签名技术是数字签名领域中的一个研究热点,能够有效实现身份的匿名性,为VANET中的安全认证和隐私保护提供新的方法。针对VANET的隐私保护问题,采用秘密共享技术,提出了一个安全的车载自组网消息认证方案。该方案使用高效的门限代理签名来保护隐私,路边单元将车载单元对消息的签名转换为认证中心对同一消息的签名,有效消除根据签名追踪车辆的风险;同时将重签名密钥共享给多个路边通信单元,有效防止重签名密钥受到威胁。认证中心还能够追溯到发布虚假消息的真实车辆,解决了违规车辆的召回问题。基于代理重签名体制和无证书公钥密码体制,提出了一个安全有效的车载自组网消息认证方案。通过引入代理重签名技术,认证中心将车载单元对消息的签名转换为路边单元对同一消息的签名,消除根据签名追踪车辆的风险,实现了车载自组网的安全通信;并且采用的无证书公钥密码体制,有效解决了车载自组网中证书管理与密钥托管的问题。如果车辆发布虚假消息,认证中心能够准确追溯到车辆的真实身份,并召回违法车辆。与同类方案相比,新方案具有较高的安全性和较低的存储开销和通信开销。
[Abstract]:Nowadays, the frequent occurrence of road traffic accidents has become one of the serious problems that the whole society must face. Vehicle Ad Hoc Network (VANET,Vehicular Ad-hoc Network) is a vehicle communication ad hoc network designed to reduce traffic accidents and enhance road safety. However, the traditional security and privacy protection protocol is not fully suitable for on-board ad hoc network, so it is urgent to design a new security authentication and privacy protection protocol for VANET. Proxy resignature technology is a research focus in the field of digital signature, which can effectively realize the anonymity of identity and provide a new method for security authentication and privacy protection in VANET. In order to solve the privacy protection problem of VANET, a secure message authentication scheme for vehicle ad hoc network is proposed by using secret sharing technology. In this scheme, efficient threshold proxy signature is used to protect privacy. Roadside unit converts the signature of the vehicle unit to the message into the signature of the same message by the authentication center, which effectively eliminates the risk of tracking the vehicle according to the signature. At the same time, the resignature key is shared with multiple roadside communication units to effectively prevent the resignature key from being threatened. The certification center can also trace back to real vehicles that publish false news, solving the recall problem of illegal vehicles. Based on the proxy resignature scheme and the certificate-free public key cryptography, a secure and effective message authentication scheme for vehicle ad hoc networks is proposed. By introducing proxy resignature technology, the authentication center converts the signature of the vehicle unit to the signature of the same message by the roadside unit, eliminates the risk of tracking the vehicle according to the signature, and realizes the secure communication of the vehicle ad hoc network. The certificate-free public key cryptosystem is adopted to effectively solve the problems of certificate management and key escrow in vehicle ad hoc networks. If the vehicle publishes false information, the certification center can accurately trace the true identity of the vehicle and recall illegal vehicles. Compared with similar schemes, the new scheme has higher security, lower storage overhead and communication overhead.
【学位授予单位】：西北师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.67;U495;TP309
本文编号：2494042
[Abstract]:Nowadays, the frequent occurrence of road traffic accidents has become one of the serious problems that the whole society must face. Vehicle Ad Hoc Network (VANET,Vehicular Ad-hoc Network) is a vehicle communication ad hoc network designed to reduce traffic accidents and enhance road safety. However, the traditional security and privacy protection protocol is not fully suitable for on-board ad hoc network, so it is urgent to design a new security authentication and privacy protection protocol for VANET. Proxy resignature technology is a research focus in the field of digital signature, which can effectively realize the anonymity of identity and provide a new method for security authentication and privacy protection in VANET. In order to solve the privacy protection problem of VANET, a secure message authentication scheme for vehicle ad hoc network is proposed by using secret sharing technology. In this scheme, efficient threshold proxy signature is used to protect privacy. Roadside unit converts the signature of the vehicle unit to the message into the signature of the same message by the authentication center, which effectively eliminates the risk of tracking the vehicle according to the signature. At the same time, the resignature key is shared with multiple roadside communication units to effectively prevent the resignature key from being threatened. The certification center can also trace back to real vehicles that publish false news, solving the recall problem of illegal vehicles. Based on the proxy resignature scheme and the certificate-free public key cryptography, a secure and effective message authentication scheme for vehicle ad hoc networks is proposed. By introducing proxy resignature technology, the authentication center converts the signature of the vehicle unit to the signature of the same message by the roadside unit, eliminates the risk of tracking the vehicle according to the signature, and realizes the secure communication of the vehicle ad hoc network. The certificate-free public key cryptosystem is adopted to effectively solve the problems of certificate management and key escrow in vehicle ad hoc networks. If the vehicle publishes false information, the certification center can accurately trace the true identity of the vehicle and recall illegal vehicles. Compared with similar schemes, the new scheme has higher security, lower storage overhead and communication overhead.
【学位授予单位】：西北师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.67;U495;TP309
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