High-Speed Anonymous Device Authentication Without Asymmetric Cryptography in the Internet-of-Things.

A large portion of end-point and edge devices in the Internet-of-Things (IoT) are constrained in computational power and bandwidth, which means they cannot easily afford the resource-consuming asymmetric cryptography such as Diffie-Hellman key exchange and RSA-2048 digital signatures. On the other hand, these devices are still confronted with similar threats against conventional devices in authenticity and privacy. In this paper, we present a high-speed authentication protocol for resource-constrained devices in IoT, which provides both authenticity and anonymity without any use of asymmetric cryptography. Moreover, we show how our protocol can be extended for devices that can execute symmetric encryption for secure data transmission. The security and anonymity of the new protocols have been analyzed comprehensively, and the evaluation demonstrates their efficiency.