电动汽车充电桩轻量级密钥管理方案

充电桩通信系统作为“泛在电力物联网”通信网络的重要组成部分，其密钥管理是信息安全防护措施成功实施的关键。为保证管理控制中心、电气控制柜、电动汽车充电桩三层架构的通信安全，兼顾电动汽车充电桩通信效率，提出一种轻量级的充电桩密钥管理方案（charging pile key management scheme，CPKMS），并给出了详细的密钥管理实现流程；分析了该方案的密钥安全性、前向与后向安全性、抗攻击能力及其运算负荷和密钥存储数量。分析结果表明：该方案具有抗伪造攻击、抗中间人攻击与抗重放攻击的能力，兼顾了安全性与效率，能够满足充电桩密钥管理的安全需求。

Lightweight Key Management Scheme Based on Communication System of Electric Vehicle Charging Piles

As an important part of the communication network of ubiquitous power internet of things， the key management of charging pile communication system is important to the successful implementation of information security protection measure. In order to ensure the communication security of the three-tier architecture of backstage service management center， electrical control cabinet and electric vehicle charging piles， and to consider the efficiency of electric vehicle charging pile communication， a lightweight key management scheme （CPKMS） is proposed； The detailed implementation process of key generation， key issuance， key update and key destruction is proposed； Key security， forward and backward security， anti-attack capability， operation load and key storage quantity of CPKMS are analyzed. The analyzing results show that CPKMS can resist replay attack， forgery attack and man-in-the-middle attack. It has high security and efficiency， and can meet the safety requirements of the key management of electric vehicle charging piles.