Vehicular ad hoc networks (VANETs) are a type of mobile ad hoc network that have emerged in the last decade of technological and application perspectives. Security in vehicular communication networks is very important due to the plethora of possible security attacks. Being a security requirement, authentication holds a key role in VANETs, because compromising it may have severe consequences, such as road accidents or loss of life. Recently, the number of research results reported in this particular field has increased. Due to its importance for safe operation, a holistic survey is very much required on the different authentication mechanisms used in VANETs. This article, aimed at this need, starts with the taxonomy of authentication mechanisms. Then it reviews the different authentication mechanisms proposed in the literature, highlighting their drawbacks and advantages. Finally, the article concludes with suggestions for future research directions focused on a better authentication mechanism for use in vehicular communication.

中文翻译：

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车载自组网认证技术综述


车载自组织网络（VANET）是近十年来技术和应用前景中出现的一种移动自组织网络。由于存在大量可能的安全攻击，车辆通信网络的安全性非常重要。作为一项安全要求，身份验证在 VANET 中发挥着关键作用，因为破坏身份验证可能会造成严重后果，例如道路事故或人员伤亡。最近，该特定领域的研究成果报道数量有所增加。由于其对安全运行的重要性，非常需要对 VANET 中使用的不同身份验证机制进行全面调查。本文针对这一需求，从身份验证机制的分类开始。然后回顾了文献中提出的不同身份验证机制，强调了它们的缺点和优点。最后，本文对未来的研究方向提出了建议，重点关注更好的车辆通信身份验证机制。