Research Article An Intelligent and Secure Health Monitoring Scheme Using IoT Sensor Based on Cloud Computing Jin-Xin Hu, 1 Chin-Ling Chen, 2,3 Chun-Long Fan, 1 and Kun-hao Wang 3 1 School of Computer Science, Shenyang Aerospace University, Shenyang City, Liaoning Province, China 2 Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung, Taiwan 3 School of Information Engineering, Changchun University of Science and Technology, Changchun 130600, China Correspondence should be addressed to Chin-Ling Chen; clc@mail.cyut.edu.tw Received 3 June 2016; Accepted 28 November 2016; Published 3 January 2017 Academic Editor: Hai-Feng Ji Copyright © 2017 Jin-Xin Hu et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Internet of Tings (IoT) is the network of physical objects where information and communication technology connect multiple embedded devices to the Internet for collecting and exchanging data. An important advancement is the ability to connect such devices to large resource pools such as cloud. Te integration of embedded devices and cloud servers ofers wide applicability of IoT to many areas of our life. With the aging population increasing every day, embedded devices with cloud server can provide the elderly with more fexible service without the need to visit hospitals. Despite the advantages of the sensor-cloud model, it still has various security threats. Terefore, the design and integration of security issues, like authentication and data confdentiality for ensuring the elderly’s privacy, need to be taken into consideration. In this paper, an intelligent and secure health monitoring scheme using IoT sensor based on cloud computing and cryptography is proposed. Te proposed scheme achieves authentication and provides essential security requirements. 1. Introduction With the rapid development of the Internet of Tings (IoT), medical sensors, and Internet applications, online medical service has become possible in recent years. It is noteworthy that the number of elders with chronic disease is increasing every year. An aging society refers to a population structure model in which the aging population reaches or exceeds a cer- tain proportion. According to the UN’s traditional standard a region is regarded as an aging society when people over 60 years old account for 10% of the total population, while the new standard is people over 65 years old representing 7% of the total population. Between 2015 and 2050, the proportion of the world’s population over 60 years will nearly double, from 12% to 22% [1]. An aging society means low fertility, aging population structure, and social security system lag. In the meantime, the health of the elderly has become a highlighted social issue. While more and more elders need long-term care, they also want to remain independent and active and reside in their own homes for as long as possible. Due to the lack of medical resources, they cannot be treated appropriately. Te hospitals are flling up with an aging pop- ulation, recovery groups and high risk groups. Continuous monitoring of critical vital signs of patients is a key process in hospitals. Today, this is usually performed via diferent cabled sensors attached to the patient and connected to bedside monitors [2]. Te limitation here is that the elders are tied to bedside devices. Consequently, it has become feasible and necessary to perform personal diagnoses of medical diseases with the measurement repository without visiting hospitals [3]. With the increasing availability of medical sensors and IoT devices for personal use, this situation opens up a new application area for body sensor networks. Wireless sensor networks (WSNs) are an emerging tech- nology that possesses a huge potential to play an impor- tant role in many applications [4]. Te rapid growth in physiological sensors, low-power integrated circuits, and wireless communication has enabled a new generation of wireless sensor networks, now used for purposes such as monitoring trafc, crops, infrastructure, and health. Te body Hindawi Journal of Sensors Volume 2017, Article ID 3734764, 11 pages https://doi.org/10.1155/2017/3734764