- 期刊
A Blockchain-based Revocable Certificateless Signature Scheme for IoT Device
摘要
With the rapid development of Internet of Things (IoT) technology, completing a transaction with intelligent devices has been an essential communication mode in our daily life. Generally, lightweight smart devices conduct transactions relying on the third-party payment platform, which takes several inherent challenges of mutual distrust, data authentication and low efficiency in the IoT environment. To mitigate these issues, in this paper, we design a paring-free revocable certificateless signature (CLS) scheme with high efficiency based on the blockchain technique. Our scheme is a viable approach to enhance the performance without bilinear parings operation in the IoT lightweight equipment. And there are two different address lists stored in the blockchain to record the secret and public transaction data, respectively. According to this method, not only can the key management of the user be implemented in an efficient solution, but also enables the public verification to be performed transparently between the two parties. Furthermore, with the help of cloud server, it generates a time key for the user to accomplish revocation with low computation cost. We also make an analysis on the security to demonstrate that our proposal is existential unforgeability against adaptive chosen message attacks (EUF-CMA) under the elliptic curve discrete logarithm (ECDL) problem. Finally, the performance comparison indicates that our protocol is better than other related schemes.