基于属性基加密与阈值秘密共享的智能电表密钥管理方法

智能电表是计量自动化中作为电力公司与用户之间计费的一种重要计量设备,而传统智能电表密钥管理方法存在效率低、通信量大且易受网络攻击等问题。为此,提出了一种基于属性基加密与阈值秘密共享的智能电表密钥管理方法。首先,采用组认证对智能电表的身份进行认证,减少了一对一认证的通信次数。然后,抄表过程中进行身份认证时采用(t,n)-阈值秘密共享技术,并且在密钥生成过程中采用属性基加密技术,以隐藏访问结构,避免智能电表信息泄露。最后,针对网络存在多种安全威胁,利用大数据技术对网络攻击类型进行挖掘,以快速识别恶意攻击者。将提出的方法进行仿真实验以验证其有效性,仿真结果表明,相比其他技术,提出的方法显著降低了系统存储负担,提高了通信效率,且识别恶意参与者耗时短,从而保证了密钥管理的安全性。

Intelligent Terminal Key Management Method Based on Attribute Base Encryption and Threshold Secret Sharing

Smart meter is an important intelligent terminal in the measurement automation as the billing between the power company and the user,the traditional key management methods of intelligent terminals have some problems,such as low efficiency,large traffic and vulnerability to network attacks.Therefore,in this paper a key management method of intelligent terminals based on attribute base encryption and threshold secret sharing is proposed.Firstly,group authentication is used to authenticate the identity of smart meters,which reduces the number of one-to-one authentication communications.Then,(t,n)-threshold secret sharing technology is used in identity authentication,and attribute base encryption technology is used in key generation process to hide access structure and avoid leakage of smart meter information.Finally,there are many kinds of security threats in the network.Large data technology is used to mine the types of network attacks in order to quickly identify malicious attackers.The proposed method is simulated to verify its effectiveness.The simulation results show that compared with other technologies,the proposed method significantly reduces the storage burden of the system,improves the communication efficiency,and takes less time to identify malicious participants,thus ensures the security of key management.