Secure and Efficient Certificateless Linearly Homomorphic Signature Scheme for Wireless Sensor Networks

With the development of network technology, wireless sensor networks (WSNs) have attracted widespread attention. However, in wireless sensor networks, sensor nodes are often distributed in harsh physical environments and communicate wirelessly with each other, so the data are vulnerable to tampering and forgery by third parties. Digital signature can be used as a security mechanism to solve the above problem. But the traditional digital signature technology needs to sign every message, which is not appropriate for sensor nodes limited by power and communication bandwidth. According to the practical application requirements of WSNs, this paper proposes a certificateless linearly homomorphic signature scheme for data transmission and authentication. The scheme can be used to ensure the authenticity, integrity and non-repudiation of data in WSNs. Furthermore, the security of the constructed scheme is proved in the random oracle model. The performance analysis shows that the scheme has certain advantages in overall performance.