Message Authentication Scheme for ad hoc Networks with Homomorphic Hash Function

In recent years, Internet of Things (IoT) is being penetrated in various fields. In the IoT paradigm, wireless ad hoc network (WANET) is an important communication infrastructure. The malicious attacker can access sensor node and steal a security related information such as a key stored in the device easily, and then they can inject malicious nodes, which can pass through authentication with a stolen key, and which can perform a falsification, into networks. Therefore, the key based schemes cannot effectively work in the situation which the key is not secure, and the reliability of the data is completely lost. In this paper, we propose the message authentication protocol using homomorphic hash function without complete safety of key, in WANET environment with limited resources for each node.