Securing Privacy Assistance for Protecting Location Based Queries Using Enhanced Symmetric Key

-While satisfying security requirements is crucial for secure group communications in wireless systems, mobile group applications often have application-specific performance requirements in terms of timeliness, reliability, and system reconfigurability. Often there exists a tradeoff between security versus performance goals since security protocols may introduce undue computational and network overheads which may prevent performance goals from being met. Many protocols for sensor network security provide confidentiality for the content of messages, contextual information usually remains exposed. Such contextual information can be exploited by an adversary to derive sensitive information such as the locations of monitored objects and data sinks in the field. Attacks on these components can significantly undermine any network application. The cluster head election is invoked on-demand, and is aimed to reduce the computation and communication costs. A large variety of approaches for ad hoc clustering have been developed by researchers which focus on different performance metrics. This paper presents a survey of different clustering schemes. Key Word: MANETS, location privacy, Clustering, symmetric key, Key Management Protocol.