Sensor node authentication and integrity of data are of utmost importance in many decision-making processes in wireless sensor networks, with the intent that every necessary data must be digitally signed by its sensor node to send data cautiously on wireless network. No one should unlock the data other than the sink node, since only the sink node can have privilege for the verification of data. The key generation process and/or the verification process is certainly a difficult job, and it would wear out the sensor having minimal operational resources. This paper studies and evaluates different types of digital signature algorithms, such as ECDSA, RSA, OTS, Lightweight digital signature and identity-based signature, and compares their key sizes, computational and energy cost in WSN. It has been found that elliptic curve digital signature algorithm has significant benefit over other public-key algorithms in WSN, as it minimizes computational time, amount of data transmission and storage.

传感器节点的身份验证和数据的完整性在无线传感器网络的许多决策过程中至关重要，其目的是每个必要的数据都必须由其传感器节点进行数字签名，以便在无线网络上谨慎地发送数据。除了汇节点之外，任何人都不应解锁数据，因为只有汇节点才能拥有验证数据的权限。密钥生成过程和/或验证过程肯定是一项艰巨的工作，它会磨损具有最少操作资源的传感器。本文研究和评估了不同类型的数字签名算法，如 ECDSA、RSA、OTS、轻量级数字签名和基于身份的签名，并比较了它们在 WSN 中的密钥大小、计算和能量成本。