DCAGS-IoT: Dynamic Cross-Domain Authentication Scheme Using Group Signature in IoT

【Author】 Yuan, Weihan; Li, Xiaoya; Li, Mingyue; Zheng, Liudong

【Source】APPLIED SCIENCES-BASEL

【影响因子】2.838

【Abstract】Cross-domain authentication requires that there is no trust gap between different trust domains that can cause cross-domain devices to exceed the security control scope of the original trust domain and further expose cross-domain authentication systems to security threats. In addition, as relying on the traditional cross-domain authentication means built by centralized institutions cannot meet the data security needs in a big data environment. Therefore, it is necessary to design a secure dynamic cross-domain authentication scheme. In this paper, we propose a dynamic cross-domain authentication scheme (DCAGS-IoT) in the Internet of Things environment using the group signature technology and the distributed system architecture of blockchain. Specifically aiming at the problem of increasing and revoking users in dynamic cross-domain authentication, a user update algorithm with the complexity of O (logN) was designed to manage users in the trust domain. Moreover, we used the characteristics that group signature users can sign on behalf of a group to protect the users' privacy and track suspicious users. Since the size of the signature generated by the scheme is independent of the number of group members N and only depends on the security parameters ?, the efficiency of the protocol implementation is improved, and the security and availability of the authentication scheme are guaranteed.

【Keywords】Internet of Things; privacy protection; dynamic cross-domain authentication; group signature; blockchain

【发表时间】2023 MAY 9

【收录时间】2023-06-22

【文献类型】理论模型

【主题类别】

区块链技术-协同技术-物联网