International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET)
Sensor networks may be deployment in hostile environments, especially in military applications. Small low cost sensor devices each equipped with limited resources are networked and are used for various critical applications. Making such sensor network secure is a challenging issue. Under such situations, the sensors may be captured, and the data may be intercepted and/or modified by the attacker. Therefore, security services such as authentication and pair wise key establishment is a critical issue to maintain network operations.