It is predicted that more than 20 billion IoT devices will be deployed worldwide by 2020. These devices form the critical infrastructure to support a variety of important applications such as smart city, smart grid, and industrial internet. To guarantee that these applications work properly, it is imperative to authenticate these devices and data generated from them. Although digital signatures can be applied for these purposes, the scale of the overall system and the limited computation capability of IoT devices pose two big challenges. In order to overcome these obstacles, we propose DIoTA, a novel decentralized ledger-based authentication framework for IoT devices. DIoTA uses a two-layer decentralized ledger architecture together with a lightweight data authentication mechanism to facilitate IoT devices and data management. We also analyze the performance and security of DIoTA, and explicitly give the major parameters an administrator can choose to achieve a desirable balance between different metrics.

中文翻译：

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DIoTA：物联网系统中基于去中心化账本的数据真实性保护框架


预计到2020年，全球将部署超过200亿个物联网设备。这些设备构成了支持智慧城市、智能电网、工业互联网等各种重要应用的关键基础设施。为了保证这些应用程序正常工作，必须对这些设备及其生成的数据进行身份验证。尽管数字签名可以用于这些目的，但整个系统的规模和物联网设备有限的计算能力构成了两大挑战。为了克服这些障碍，我们提出了 DIoTA，一种新颖的基于去中心化账本的物联网设备身份验证框架。 DIoTA 使用两层去中心化账本架构以及轻量级数据身份验证机制来促进物联网设备和数据管理。我们还分析了 DIoTA 的性能和安全性，并明确给出了管理员可以选择的主要参数，以在不同指标之间实现理想的平衡。