propose a new routing technique called Security-Aware

ad hoc Routing (SAR) that incorporates security attributes as parameters

into ad hoc route discovery. SAR enables the use of security as a negotiable

metric to improve the relevance of the routes discovered by ad hoc

routing protocols. We develop a two-tier classification of routing protocol

security metrics, and propose a framework to measure and enforce security

attributes on ad hoc routing paths. Our framework enables applications to

adapt their behavior according to the level of protection available on communicating

nodes in an ad hoc network.