AbstractsComputer Science

Broadcast nature of the wireless medium makes a Wireless Sensor newlineNetwork WSN prone to node compromise attacks where malicious users newlineinvolve actions to gain control on the network Devising security solutions to newlinesuch networks becomes more complex due to their unique specifications and newlinelack of tamper resistant hardware Hence providing security against node newlinecompromise attacks becomes an essential element for the success of sensor newlinenetwork applications especially in unattended hostile environments Security newlinemechanisms are more resource demanding in terms of computational or newlinecommunication complexity due to wireless and transient nature of newlinecommunication relationships among the nodes in the network Thus novel newlinemechanisms are required to provide sufficient levels of security while newlinerespecting the constraints in the network newlineIn the thesis certain investigations on security and node newlinecompromise attacks in a distributed wireless sensor network are carried out A newlinebasic security mechanism named MultiSEC is developed by combining the newlinebenefits of both key management and compromised node detection to provide newlinesecure access of data and control messages newline newline%%%reference p121-130.