摘要:Authentication is a very significant demand in wireless sensor networks, especially in some critical applications. However, most previous user authentication schemes are always vulnerable and high-power consumption for the resource-constrained WSNs nodes. This study will focus on user authentication by investigating the Park and others schemes to identify their demerits. After that, a novel and lightweight mutual user authentication protocol named MUAP is proposed. The analysis and results show that the proposed scheme not only can resist the specific attacks likes Man-In-The-Middle Attack, Impersonation Attack and Message-Alteration Attack but also is better than Kumar and others protocols in terms of devices computation overhead and communication consumption.