IoT promises a new era of connectivity that goes beyond laptops and smart connected devices to connected vehicles, smart homes, smart cities and connected healthcare. The huge volume of data that is collected from millions of IoT devices raises information security and privacy concerns for users. This paper presents a new scalable encryption technique, called Flexible encryption Technique (FlexenTech), to protect IoT data during storage and in transit. FlexenTech is suitable for resource constrained devices and networks. It offers a low encryption time, defends against common attacks such as replay attacks and defines a configurable mode, where any number of rounds or key sizes may be used. Experimental analysis of FlexenTech shows its robustness in terms of its multiple configurable confidentiality levels by allowing various configurations. This configurability provides several advantages for resource constrained devices, including reducing the encryption computation time by up to 9.7% when compared to its best rivals in the literature.

物联网开创了连接时代的新纪元，从笔记本电脑和智能连接设备到连接的车辆，智能家居，智能城市和连接的医疗保健。从数百万个IoT设备中收集的大量数据为用户带来了信息安全和隐私问题。本文提出了一种新的可扩展加密技术，称为弹性加密技术（FlexenTech），用于在存储和传输过程中保护IoT数据。FlexenTech适用于资源受限的设备和网络。它提供了较短的加密时间，可以防御诸如重播攻击之类的常见攻击，并定义了一种可配置的模式，其中可以使用任意数量的回合或密钥大小。通过允许进行各种配置，FlexenTech的实验分析显示出其在多个可配置机密性级别方面的鲁棒性。