Mawlood Hussein Safwan, López Ramos Juan Antonio, Álvarez Bermejo José Antonio
Department of Computer Engineering, Faculty of Engineering, Tishk International University, Erbil 44001, Iraq.
Department of Mathematics, University of Almería, 04120 Almería, Spain.
Sensors (Basel). 2020 Apr 15;20(8):2242. doi: 10.3390/s20082242.
With the deepening of the research and development in the field of embedded devices, the paradigm of the Internet of things (IoT) is gaining momentum. Its technology's widespread applications increasing the number of connected devices constantly. IoT is built on sensor networks, which are enabling a new variety of solutions for applications in several fields (health, industry, defense, agrifood and agro sectors, etc.). Wireless communications are indispensable for taking full advantage of sensor networks but implies new requirements in the security and privacy of communications. Security in wireless sensor networks (WSNs) is a major challenge for extending IoT applications, in particular those related to the smart-agro. Moreover, limitations on processing capabilities of sensor nodes, and power consumption have made the encryption techniques devised for conventional networks not feasible. In such scenario, symmetric-key ciphers are preferred for key management in WSN; key distribution is therefore an issue. In this work, we provide a concrete implementation of a novel scalable group distributed key management method and a protocol for securing communications in IoT systems used in the smart agro sector, based on elliptic curve cryptography, to ensure that information exchange between layers of the IoT framework is not affected by sensor faults or intentional attacks. In this sense, each sensor node executes an initial key agreement, which is done through every member's public information in just two rounds and uses some authenticating information that avoids external intrusions. Further rekeying operations require just a single message and provide backward and forward security.
随着嵌入式设备领域研发的不断深入，物联网（IoT）范式正蓬勃发展。其技术的广泛应用使连接设备的数量不断增加。物联网基于传感器网络构建，为多个领域（医疗、工业、国防、农业食品和农业等）的应用提供了各种新的解决方案。无线通信对于充分利用传感器网络不可或缺，但对通信的安全性和隐私提出了新的要求。无线传感器网络（WSN）的安全是扩展物联网应用的一项重大挑战，尤其是与智能农业相关的应用。此外，传感器节点处理能力和功耗的限制使得为传统网络设计的加密技术不可行。在这种情况下，对称密钥密码在WSN的密钥管理中更受青睐；因此密钥分发是一个问题。在这项工作中，我们基于椭圆曲线密码学，提供了一种新颖的可扩展群组分布式密钥管理方法的具体实现以及一种用于保护智能农业领域物联网系统通信安全的协议，以确保物联网框架各层之间的信息交换不受传感器故障或蓄意攻击的影响。从这个意义上说，每个传感器节点执行一次初始密钥协商，这只需通过每个成员的公共信息在两轮内完成，并使用一些避免外部入侵的认证信息。进一步的密钥更新操作仅需一条消息，并提供前向和后向安全性。
