In recent years, the proportion of elderly population in various countries has gradually increased. Increasing with age, it can entail illness. When these diseases are sudden, the elderly often die because there is no immediate treatment. Elderly care has become an important issue. According to this issue, we want to monitor the physiological data of the elderly, such as heartbeat, blood pressure, etc., through wearable devices. Once an abnormal condition is detected, the wearable device can be used to immediately request treatment from a nearby clinic or hospital. In order to improve the network quality of this service, we use the architecture of the mobile edge computing. The mobile edge computing provides features such as immediacy, low latency, proximity etc. However, the process of data transmission on the mobile edge computing has the risk of being stolen and identity authentication is also an important issue. Therefore, we propose a secure protocol based on cryptography to protect personal information with lightweight authentication. The proposed scheme aims to achieve mutual authentication, non-repudiation, integrity, user privacy, and defend against known attacks.

近年来，各国的老年人口比例逐渐增加。随着年龄的增长，它可能会引起疾病。当这些疾病突然发作时，老年人往往会因没有立即治疗而死亡。老年人护理已成为重要问题。根据这个问题，我们想通过可穿戴设备监视老年人的生理数据，例如心跳，血压等。一旦检测到异常情况，可穿戴设备可用于立即请求附近诊所或医院的治疗。为了提高此服务的网络质量，我们使用了移动边缘计算的体系结构。移动边缘计算提供即时，低延迟，接近等功能。但是，移动边缘计算上的数据传输过程存在被盗的风险，身份认证也是一个重要问题。因此，我们提出了一种基于密码的安全协议，以通过轻量级身份验证来保护个人信息。提出的方案旨在实现相互认证，不可否认，完整性，用户隐私并防御已知攻击。