In the Internet of Things (IoT), a lot of constrained devices are interconnected. The data collected from those devices can be the target of cyberattacks. In this paper, a lightweight cryptosystem that can be efficiently implemented in highly constrained IOT devices is proposed. The algorithm is mainly based on Advanced Encryption Standard (AES) and a new chaotic S-box. Since its adoption by the IEEE 802.15.4 protocol, AES in embedded platforms have been increasingly used. The main cryptographic properties of the generated S-box have been validated. The randomness of the generated S-box has been confirmed by the NIST tests. Experimental results and security analysis demonstrated that the cryptosystem can, on the one hand, reach good encryption results and respects the limitation of the sensor’s resources, on the other hand. So the proposed solution could be reliably applied in image encryption and secure communication between networked smart objects.

中文翻译：

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使用混沌S-Box在高度受限的IoT设备中实现对称轻量级加密系统

在物联网（IoT）中，许多受约束的设备相互连接。从这些设备收集的数据可能成为网络攻击的目标。本文提出了一种可以在高度受限的物联网设备中有效实施的轻量级密码系统。该算法主要基于高级加密标准（AES）和新的混沌S-box。自从IEEE 802.15.4协议采用它以来，嵌入式平台中的AES已得到越来越多的使用。生成的S-box的主要加密属性已得到验证。NIST测试已确认生成的S盒的随机性。实验结果和安全性分析表明，密码系统一方面可以达到良好的加密效果，另一方面也可以尊重传感器资源的限制。