An Anonymous Authentication Protocol Based on Blind Signature for Internet of Things

This paper proposes an anonymous authentication protocol based on blind signature for the Internet of Things (IoTs), which is proposed to provide protection for the identity information of the node while ensuring the legitimacy of the identity verification of the node in the IoTs. The arbitration mechanism is adopted to enhance the security of anonymous authentication to meet the requirements in terms of access authentication, node anonymity, and malicious node tracking, and so on. The threshold secret sharing algorithm and hash function are introduced to achieve anonymous authentication within and between autonomic systems, and meet the needs of the IoTs for low communication and computation overheads. The security analysis shows that the authentication protocol proposed in this paper has these good features: real-time tracking & revocation and anti-theft signature under the premise of satisfying the privacy information protection. The performance evaluation results show that compared with the existing anonymous authentication protocols, the proposed anonymous authentication protocol based on blind signature guarantees security and anonymity, while reducing the anonymous authentication time by 19.8% and ensuring the size of data packages less than 350KB.