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To achieve efficient authentication on emergency events in vehicular ad hoc networks, the authors introduce a novel Aggregated Emergency Message Authentication (AEMA) scheme to validate an emergency event. They make use of syntactic aggregation and cryptographic aggregation techniques to dramatically reduce the transmission cost, and adopt batch verification technique for efficient emergency messages verification. Compared with existing emergency message authentication approaches, the scheme shows the superiority on generality, enhanced security and efficiency. As the advancement of telecommunications, Vehicular ad hoc Networks (VANETs) have attracted extensive attentions from both industry and academia, and are expected to serve as a killer application in the future Internet and telecommunication market.
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