Key generation is a promising technique to bootstrap secure communications for the Internet of Things devices that have no prior knowledge between each other. In the past few years, a variety of key generation protocols and systems have been proposed. In this survey, we review and categorise recent key generation systems based on a novel taxonomy. Then, we provide both quantitative and qualitative comparisons of existing approaches. We also discuss the security vulnerabilities of key generation schemes and possible countermeasures. Finally, we discuss the current challenges and point out several potential research directions.

中文翻译：

---

物联网密钥生成

密钥生成是一种很有前途的技术，可以为彼此之间没有先验知识的物联网设备引导安全通信。在过去的几年中，已经提出了各种密钥生成协议和系统。在本次调查中，我们基于一种新颖的分类法对最近的密钥生成系统进行了回顾和分类。然后，我们提供现有方法的定量和定性比较。我们还讨论了密钥生成方案的安全漏洞和可能的对策。最后，我们讨论了当前的挑战并指出了几个潜在的研究方向。