Science & Engineering Research Support soCiety (SERSC)
Wireless Sensor Networks (WSNs) are vulnerable to various forms of security attacks because they are deployed in potentially adverse or even hostile environment. Research into security and routing mechanism designs specifically focused on WSNs has been challenging issues to researchers. Recently, the researcher proposed a secure data gathering protocol over WSNs based on an extended non-interactive identity-based key agreement scheme. However, their protocol could provide attacker information including traffic flow identification, traffic flow tracking or disclosing application-level information due to lack of freshness.