VANET中面向安全通信的隐私保护协议

车载网VANETs(vehicular ad hoc networks)的隐私安全问题,提出隐私保护安全通信协议PPSCP(privacy preserving secure communication protocol)。PPSCP匿名地认证安全消息,从而保护车辆隐私,阻止非法车辆跟踪,并且平衡了隐私与身份识别的关系。同时PPSCP采用了有效的撤销机制,降低了撤销列表的尺寸。此外,PPSCP能够防御重放攻击和拒绝服务攻击。通过与S3P的安全性能对比分析,结果表明,PPSCP有效地降低了安全消息处理时延,减少了撤销列表尺寸,占用带宽少,提高数据传输率。

Privacy Preserving Secure Communication Protocol in VANETs

for privacy and secure problem in vehicular Ad hoc Networks(VANETs),the privacy preserving secure communication protocol(PPSCP) for VANETs is proposed. PPSCP authenticates safety messages anonymously to preserve vehicle privacy and prevent unauthorized tracking, balances between privacy and identification, and makes a new efficient vehicle revocation scheme that reduces revocation lists size. The protocol is resistant to attacks like replay attack and Denial of Service (DoS) attack. A security performance analysis to compare between PPSCP and S3P was performed through simulation. The simulation results show that PPSCP work well in term of securing safety messages with short time , reducing the revocation lists size, consuming less bandwidth and improving the message delivery ratio.