The Internet of Things (IoT) has transformed everyday environments into interconnected cyber–physical systems, enabling automation and assistance for diverse applications such as home automation and disability support. However, IoT security remains a critical concern, particularly in the realm of Public Key Infrastructure (PKI). Traditional PKI solutions are often impractical for IoT devices due to their resource limitations, prompting the development of “lightweight” PKI solutions in recent academic research. This article presents a comprehensive Systematic Literature Review (SLR) focused on articles published between 2008 and 2022 that explore lightweight PKI solutions tailored for IoT. The review categorizes current trends, identifies challenges, and highlights potential opportunities in the field. Despite the promise of lightweight PKI for IoT, significant implementation barriers persist. The article concludes by outlining key steps for developing effective lightweight PKI solutions and offers practical recommendations to address these challenges.

中文翻译：

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面向物联网的轻量级公钥基础设施：系统性文献综述


物联网 （IoT） 已将日常环境转变为互连的信息物理系统，为家庭自动化和残疾支持等各种应用提供自动化和帮助。然而，物联网安全仍然是一个关键问题，尤其是在公钥基础设施 （PKI） 领域。由于资源限制，传统的 PKI 解决方案通常不适用于 IoT 设备，这促使在最近的学术研究中开发了“轻量级”PKI 解决方案。本文介绍了全面的系统文献综述 （SLR），重点介绍了 2008 年至 2022 年间发表的文章，这些文章探讨了为物联网量身定制的轻量级 PKI 解决方案。该审查对当前趋势进行分类，确定挑战，并突出该领域的潜在机会。尽管 IoT 的轻量级 PKI 有望实现，但仍然存在重大的实施障碍。本文最后概述了开发有效的轻量级 PKI 解决方案的关键步骤，并提供了应对这些挑战的实用建议。