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Abstract
In a wireless sensor networks are widely used in many applications. To tracking the event and collecting the data from remote area or hostile area wireless sensor network is used. A WSN is the collection of wirelessly connected tiny sensors that has very limited resources like battery, computation power and memory. When data is collected by some sensor in must be transfer to control centre through gateway (Sink). Routing protocol route the date to the sink. Transfer the data to sink securely is very important task. For secure transfer of data in the network routing protocol must be secure and can be use the cryptography method for authentication and confidentiality. When some security technique applies to routing the performance of routing protocol may be degrading. In this paper we try to analyse the security of these routing protocol and their performance.