In wireless sensor networks, the sensors transfer data through radio signals to a remote base station. Sensor nodes are used to sense environmental conditions such as temperature, strain, humidity, sound, vibration, and position. Data security is a major issue in wireless sensor networks since data travel over the naturally exposed wireless channel where malicious attackers may get access to critical information. The sensors in wireless sensor networks are resource-constrained devices whereas the existing data security approaches have complex security mechanisms with high computational and response times affecting the network lifetime. Furthermore, existing systems, such as secure efficient encryption algorithm, use the Diffie–Hellman approach for key generation and exchange; however, Diffie–Hellman is highly vulnerable to the man-in-the-middle attack. This article introduces a data security approach with less computational and response times based on a modified version of Diffie–Hellman. The Diffie–Hellman has been modified to secure it against attacks by generating a hash of each value that is transmitted over the network. The proposed approach has been analyzed for security against various attacks. Furthermore, it has also been analyzed in terms of encryption/decryption time, computation time, and key generation time for different sizes of data. The comparative analysis with the existing approaches shows that the proposed approach performs better in most of the cases.

中文翻译：

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在无线传感器网络中使用改进的 Diffie-Hellman 的有效密码技术

在无线传感器网络中，传感器通过无线电信号将数据传输到远程基站。传感器节点用于感知环境条件，例如温度、应变、湿度、声音、振动和位置。数据安全是无线传感器网络中的一个主要问题，因为数据通过自然暴露的无线信道传输，恶意攻击者可能会在其中访问关键信息。无线传感器网络中的传感器是资源受限的设备，而现有的数据安全方法具有复杂的安全机制，计算和响应时间长，影响网络寿命。此外，现有系统，例如安全高效的加密算法，使用 Diffie-Hellman 方法进行密钥生成和交换；然而，Diffie-Hellman 极易受到中间人攻击。本文介绍了一种基于 Diffie-Hellman 修改版本的具有更少计算和响应时间的数据安全方法。Diffie-Hellman 已经过修改，通过生成通过网络传输的每个值的散列来保护它免受攻击。已针对各种攻击的安全性分析了所提出的方法。此外，还分析了不同大小数据的加密/解密时间、计算时间和密钥生成时间。与现有方法的比较分析表明，所提出的方法在大多数情况下表现更好。Diffie-Hellman 已经过修改，通过生成通过网络传输的每个值的散列来保护它免受攻击。已针对各种攻击的安全性分析了所提出的方法。此外，还分析了不同大小数据的加密/解密时间、计算时间和密钥生成时间。与现有方法的比较分析表明，所提出的方法在大多数情况下表现更好。Diffie-Hellman 已经过修改，通过生成通过网络传输的每个值的散列来保护它免受攻击。已针对各种攻击的安全性分析了所提出的方法。此外，还分析了不同大小数据的加密/解密时间、计算时间和密钥生成时间。与现有方法的比较分析表明，所提出的方法在大多数情况下表现更好。