Cryptography Based Message Authentication for Wireless Sensor Network

Sensor networks are vulnerable to false data injection attack and path-based denial of service (PDoS) attack. Numerous authentication schemes have been proposed in the past for protecting authenticity and integrity in wireless sensor network. To address these issues, we present a Constrained Function based en-route Filtering (CFA) scheme for message Authentication in wireless sensor networks in which each node have an en-route filtering capability. The authentication is used along with the RSA algorithm to provide more security. For authentication we are mainly going to implement Off line and On line step of CFA scheme and we are going to compare the energy consumption with and without CFA scheme.