关键词: 物联网, 公钥基础设施, 隐式证书, SM2算法, 身份鉴别

Abstract: With the development of information technology, the Internet of everything has become the mainstream development direction in the field of science and technology.With the increasing number of device nodes in the Internet of things (IoT), the security certification of the IoT has become increasingly prominent.In recent years, information security problems of the IoT occur frequently, and a large number of miniature devices of the IoT lack network authentication mechanism. Electronic authentication and key management services based on the traditional PKI mechanism require complex digital certificate management mechanism and consume a large amount of computing and network resources. Therefore, they are not suitable for IoT application scenarios.Compared with the traditional authentication scheme, the implicit certificate scheme is more suitable for the IoT devices with limited memory and computing resources in terms of memory consumption and computation.In this paper, we analyze the limitations of PKI technology in the IoT, study the implicit certificate mechanism suitable for the IoT and the implicit certificate mechanism based on the SM2 algorithm.Finally, we discuss some challenges and suggestions of PKI technology in the IoT.

Key words: IoT, PKI, implicit certificate, SM2 algorithm, identification