Abstract— In Wireless Sensor Network, when user wants toaccess the data at sensor node at that time user should be authorized. Thereare many malicious users in network. In previous systems, there are chances ofmany network attacks like node capture, stolen smart card attack, sensor nodespoofing attack, stolen verifier attack, and fails to ensure backward secrecy. Toovercome these attacks and to prevent our sensor, sensor data, and Network frommalicious users, we proposed a secure, efficient, flexible AuthenticationScheme for WSN.
Keywords: Ad hoc wireless sensor network, Smart card, ForwardSecrecy, Oracles, Cloud Storage