面向雾辅助V2G网络的匿名认证方案

Anonymous Authentication Scheme for Fog-Assisted V2G Networks

摘要: 车辆到电网(Vehicle-to-grid, V2G)作为一种新的智能电网模式，可以与可再生能源相结合，提供电力服务，管理电力需求，并建立双向互动的服务模式。电动汽车在请求充放电服务时，需要先向充电站发送带有可识别信息的身份认证信息，从而引起一些安全与隐私方面的威胁。因此，针对此类问题，本文结合密码学匿名凭证思想，提出了一种面向雾辅助V2G网络的匿名认证方案，满足匿名性、不可伪造性、可追踪性、可撤销性等安全需求。在性能方面，给出了方案的功能性分析和性能测试结果，对不同阶段各实体的计算代价进行分析，结果表明所提出的方案在功能性和性能两个方面都具有实际意义。综上，提出的方案可为V2G网络提供一种高效、隐私且安全的认证方案。

Abstract: Vehicle-to-grid (V2G), as a new smart grid model, can be combined with renewable energy sources to provide electricity services, manage electricity demand, and establish a two-way interactive service model. When electric vehicles request charging and discharging services, they need to send identification information with identifiable information to the charging station, which causes some security and privacy threats. Therefore, in order to solve such problems, this paper proposes an anonymous authentication scheme for fog-assisted V2G network based on the idea of anonymous credential in cryptography, which meets the security requirements of anonymity, unforgeability, traceability, revocation and so on. In terms of performance, the functional analysis and performance test results of the scheme are given, and the computational cost of each entity in different stages is analyzed. The results show that the proposed scheme has practical significance in both functionality and performance. In summary, the proposed scheme can provide an efficient, private and secure authentication scheme for V2G networks.