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'Verify-on-Demand' - A Practical and Scalable Approach for Broadcast Authentication in Vehicle-to-Vehicle Communication

机译:“按需验证”-一种实用且可扩展的车对车通信中的广播身份验证方法

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摘要

In general for Vehicle-to-Vehicle (V2V) communication, message authentication is performed on every received wireless message by conducting verification for a valid signature, and only messages that have been successfully verified are processed further. In V2V safety communication, there are a large number of vehicles and each vehicle transmits safety messages frequently; therefore the number of received messages per second would be large. Thus authentication of each and every received message, for example based on the IEEE 1609.2 standard, is computationally very expensive and can only be carried out with expensive dedicated cryptographic hardware. An interesting observation is that most of these routine safety messages do not result in driver warnings or control actions since we expect that the safety system would be designed to provide warnings or control actions only when the threat of collision is high. If the V2V system is designed to provide too frequent warnings or control actions, then the system would be a nuisance to the driver. Therefore it is reasonable to define an approach where messages are first processed and then authenticated using verification on-demand. In this paper we describe such an approach and discuss its implementation for V2V safety system. It is shown that Verify-on-Demand (VoD) is a practical and scalable approach for broadcast authentication in V2V safety communication while conforming to the IEEE 1609.2 standard.
机译:通常,对于车对车(V2V)通信,通过对有效签名进行验证来对每个收到的无线消息执行消息身份验证,并且仅进一步处理已成功验证的消息。在V2V安全通信中,车辆数量众多,每辆车都频繁发送安全信息。因此,每秒接收的消息数将很大。因此,例如基于IEEE 1609.2标准的对每个接收到的消息的认证在计算上是非常昂贵的,并且仅可以使用昂贵的专用密码硬件来执行。一个有趣的发现是,大多数这些常规安全消息不会导致驾驶员警告或控制措施,因为我们希望安全系统将被设计为仅在碰撞威胁很高时才提供警告或控制措施。如果V2V系统被设计为提供过于频繁的警告或控制措施,则该系统将对驾驶员造成麻烦。因此,定义一种方法是合理的,在该方法中,先处理消息,然后使用按需验证对消息进行身份验证。在本文中,我们描述了这种方法,并讨论了其在V2V安全系统中的实现。结果表明,按需验证(VoD)是一种实用且可扩展的方法,用于V2V安全通信中的广播身份验证,同时符合IEEE 1609.2标准。

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