Robust encryption techniques require heavy computational capability and consume large amount of memory which are unaffordable for resource constrained IoT devices and Cyber-Physical Systems with an inclusion of general-purpose data manipulation tasks. Many encryption techniques have been introduced to address the inability of such devices, lacking in robust security provision at low cost. This article presents an encryption technique, implemented on a resource constrained IoT device (AVR ATmega2560) through utilizing fast execution and less memory consumption properties of curve25519 in a novel and efficient lightweight hash function. The hash function utilizes GMP library for multi-precision arithmetic calculations and pre-calculated curve points to devise a good cipher block using ECDH based key exchange protocols and large random prime number generator function.

强大的加密技术要求强大的计算能力并消耗大量内存，而对于资源受限的IoT设备和网络物理系统而言，包含通用数据处理任务是无法承受的。已经引入了许多加密技术来解决这种设备的故障，缺乏以低成本提供可靠的安全性。本文介绍了一种加密技术，该技术通过在新颖高效的轻量哈希函数中利用Curve25519的快速执行和较少的内存消耗属性，在资源受限的IoT设备（AVR ATmega2560）上实现。