The usage of different technologies and smart devices helps people to get medical services remotely for multiple benefits. Thus, critical and sensitive data is exchanged between a user and a doctor. When health data is transmitted over a common channel, it becomes essential to preserve various privacy and security properties in the system. Further, the number of users for remote services is increasing day-by-day exponentially, and thus, it is not adequate to deal with all users using the one server due to the verification overhead, server failure, and scalability issues. Thus, researchers proposed various authentication protocols for multi-server architecture, but most of them are vulnerable to different security attacks and require high computational resources during the implementation. To Tackle privacy and security issues using less computational resources, we propose a privacy-preserving mutual authentication and key agreement protocol for a multi-server healthcare system. We discuss the proposed scheme’s security analysis and performance results to understand its security strengths and the computational resource requirement, respectively. Further, we do the comparison of security and performance results with recent relevant authentication protocols.

使用不同的技术和智能设备可以帮助人们远程获得医疗服务，从而获得多种好处。因此，关键和敏感数据在用户和医生之间交换。当健康数据通过公共通道传输时，必须在系统中保留各种隐私和安全属性。此外，用于远程服务的用户数量呈指数增长，因此，由于验证开销，服务器故障和可伸缩性问题，使用一台服务器与所有用户打交道是不够的。因此，研究人员提出了用于多服务器体系结构的各种身份验证协议，但是大多数协议容易受到不同的安全攻击，并且在实施过程中需要大量的计算资源。为了使用更少的计算资源来解决隐私和安全问题，我们提出了一种用于多服务器医疗系统的保护隐私的相互身份验证和密钥协商协议。我们讨论了该方案的安全性分析和性能结果，以分别了解其安全性优势和计算资源需求。此外，我们将安全性和性能结果与最新的相关身份验证协议进行了比较。