Identity-Exchange based Privacy Preserving Mechanism in Vehicular Networks

서지정보

· 발행기관 : 한국정보보호학회
· 수록지 정보 : 정보보호학회논문지 / 24권 / 6호 / 1147 ~ 1157페이지
· 저자명 : 후세인라쉬드, 오희국

초록

Intelligent transportation system (ITS) is realized through a highly ephemeral network, i.e. vehicular ad hoc network (VANET)which is on its way towards the deployment stage, thanks to the advancements in the automobile and communicationtechnologies. However, it has not been successful, at least to date, to install the technology in the mass of vehicles due tosecurity and privacy challenges.
Besides, the users of such technology do not want to put their privacy at stake as a result of communication with peervehicles or with the infrastructure. Therefore serious privacy measures should be taken before bringing this technology to theroads. To date, privacy issues in ephemeral networks in general and in VANET in particular, have been dealt with through various approaches. So far, multiple pseudonymous approach is the most prominent approach. However, recently it has beenfound out that even multiple pseudonyms cannot protect the privacy of the user and profilation is still possible even if differentpseudonym is used with every message. Therefore, another privacy-aware mechanism is essential in vehicular networks. In thispaper, we propose a novel identity exchange mechanism to preserve conditional privacy of the users in VANET. Users exchangetheir pseudonyms with neighbors and then use neighbors’ pseudonyms in their own messages. To this end, our proposed schemeconditionally preserves the privacy where the senders of the message can be revoked by the authorities in case of any dispute.

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