Sustainable Computing has advanced the technological evolution of the Internet and information-based communication technology. It is nowadays emerging in the form of the Cloud of Medical Things (CoMT) to develop smart healthcare systems. The academic community has lately made great strides for the development of security for the CoMT based application systems, such as e-healthcare systems, industrial automation systems, military surveillance systems, and so on. To the architecture of CoMT based Smart Environment, Chebyshev Chaotic-Map based single-user sign-in (S-USI) is found as a significant security-control mechanism. To ensure the fidelity, the S-USI assigns a unary-token to the legal users to access the various services, provided by a service provider over an IP-enabled distributed networks. Numerous authentication mechanisms have been presented for the cloud-based distributed networks. However, most of the schemes are still persuasible to security threats, such as user-anonymity, privileged-insider, mutual authentication, and replay type of attacks. This paper applies a sensor/sensor-tag based smart healthcare environment that uses S-USI to provide security and privacy. To strengthen the authentication process, a robust secure based S-USI mechanism and a well-formed coexistence protocol proof for pervasive services in the cloud are proposed. Using the formal security analysis, the prominence of the proposed strategies is proven to show the security efficiency of proposed S-USI. From the formal verification, the comparison results demonstrate that the proposed S-USI consumes less computation overhead; and thus it can be more suitable for the telecare medical information systems.

可持续计算促进了互联网和基于信息的通信技术的技术发展。如今，以医疗物联网（CoMT）的形式正在出现，以开发智能医疗系统。最近，学术界在基于CoMT的应用程序系统（例如电子医疗系统，工业自动化系统，军事监视系统等）的安全性开发方面取得了长足的进步。对于基于CoMT的智能环境的体系结构，基于Chebyshev Chaotic-Map的单用户登录（S-USI）被认为是一种重要的安全控制机制。为了确保保真度，S-USI为合法用户分配一元令牌以访问由服务提供商在启用IP的分布式网络上提供的各种服务。已经针对基于云的分布式网络提出了许多认证机制。但是，大多数方案仍然可以说服安全威胁，例如用户匿名性，特权者，相互身份验证和重放类型的攻击。本文应用了基于传感器/传感器标签的智能医疗环境，该环境使用S-USI提供安全性和隐私性。为了加强身份验证过程，提出了基于鲁棒性的基于S-USI的可靠机制以及针对云中普遍服务的格式良好的共存协议证明。使用形式上的安全分析，证明了所提出策略的突出性以显示所提议S-USI的安全效率。通过形式验证，比较结果表明，所提出的S-USI消耗较少的计算开销。