An Improved Anonymous Authentication Scheme for Internet of Medical Things Based on Elliptic Curve Cryptography

With the continuous development of wearable devices and the Internet of Things, Internet of Medical Things (IoMT) consisting of wireless body area networks is booming. The IoMT system can play the role of continuous and remote monitoring of various medical parameters of patients, which provides a new direction for future medical diagnosis and can well increase the efficiency of medical services. However, the medical sensitive data collected during the communication process is vulnerable to various attacks when transmitted through wireless channels, which can easily induce to the leakage of patients’ privacy data and other security problems. In addition, owing to the limited computing resources of wearable devices, designing a secure authentication protocol is still a challenge that requires concerted efforts. In this paper, an improved lightweight anonymous authentication protocol is proposed, and the proposed scheme can guarantee the required security in IOMT system. It can be verified by the formal and informal security proofs presented in the paper. And the overall performance has been improved, including the improvement of security performance and the reduction of communication cost.