ECC based certificateless aggregate signature scheme for healthcare wireless sensor networks

Abstract

Wireless sensor networks (WSNs) are heavily used in applications like remote monitoring, vehicle management, manufacturing and healthcare. In healthcare, they are used to collect the data from the patients and transmit to the doctors. Patients wear the healthcare devices such as fit bands, watches, ECG and BP monitors to collect the various health indicators including temperature, oxygen, blood pressure and heart rate, and then this information is sent over the public network to the designated doctor for the assessment. The healthcare information is very sensitive for the patients, so it becomes important to protect the information from the various possible attacks. In this paper, a certificateless aggregate signature scheme based on ECC called E-CLAS is proposed. The proposed scheme generates the aggregate signature on the healthcare information produced by the n number of patients and then this aggregate signature is verified by the designated doctor. The formal security analysis of the scheme using random oracle model proves that it is secure against forgery attack. Its formal security verification using the AVISPA tool shows that it is secure against active and passive attacks. In the performance analysis, we show that the proposed scheme has less computation cost than the related schemes.