A user authentication scheme based on dynamic password for wireless sensor networks

In recent years the user authentication becomes a hot issue in the researches of WSNs. It's a critical issue but not an easy one due to the special features of WSNs, such as resource-constrained, limited battery power and so on. In this paper, a two-factor user authentication scheme based on dynamic password is presented by using one-way hash function and exclusive-OR operations. Analysis results show that the scheme is simple, practicable, and also can provide a certain safety user authentication to WSNs.