NOMOP-ECDSA: A Lightweight ECDSA Engine for Internet of Things

Internet of Things (IoT) has received attention recently, featuring tremendous applications. Due to the lack of authentication, popular IoT applications are prone to various attacks. However, because of resource limitation and heterogeneous characteristics of IoT applications, the cryptographic algorithms may fail to be universal adopted and thus, it is challenging to defend against these attacks. In this paper, we proposed NOMOP-ECDSA, a lightweight Elliptic Curve Digital Signature Algorithm for IoT applications, which can address the aforementioned challenge. Our idea is that the resource-consuming operations can be replaced with other basic operations, and therefore, achieve better performance. As a demonstration, we also proposed a mutual authentication protocol for smart cards. In terms of security and efficiency, systematic analysis is performed to validate our NOMOP-ECDSA and protocol.