secure routing in ad hoc wireless networks

Information about secure routing in ad hoc wireless networks

Published on October 7, 2007

Author: Gulkund

Source: authorstream.com

Content

Secure Routing in Ad Hoc Wireless Networks:  Secure Routing in Ad Hoc Wireless Networks 11.03.2005 Requirements of a Secure Routing Protocol:  Requirements of a Secure Routing Protocol Detection of malicious nodes Guarantee of correct route discovery Confidentiality of network topology Stability against attacks AODV:  AODV Ad-hoc On-demand Distance Vector Protocol Source node broadcasts RouteRequest Intermediate nodes forward it If node has a route to destination, it initiates RouteReply SAR:  SAR Security-aware Ad hoc Routing protocol Enables different levels of security Level of trust as a metric Each packet is associated with a security level Intermediate nodes are associated with security levels Different keys for different levels of security SAR:  SAR SEAD:  SEAD Secure Efficient Ad hoc Distance vector routing protocol Distance Vector Routing The metric used for routing is hop-count Periodic and/or triggered updates DSDV (Highly Dynamic Destination-Sequenced Distance-Vector Routing) uses sequence numbers DSDV-SQ (DSDV for sequence numbers) Assumes upper bound for the metric used SEAD:  SEAD One-Way Hash Function Used for authentication Generates a one-way hash chain Avoids looping Easily implement with slight modifications ARAN:  ARAN Authenticated Routing for Ad hoc Networks routing protocol Based on cryptographic certificates Defeats all identified attacks on the network layer Issue of certificates: There exists a trusted server Doesn’t specify any specific key distribution algorithm ARAN:  ARAN End-to-end route authentication: Ensures that the correct destination is reached by the packets RouteRequest and RouteReply packets encrypted at each node Security-Aware AODV Protocol:  Security-Aware AODV Protocol RouteRequest packets only sent when data packets arrive at node for transmission Malicious node advertises that it has the shortest path redirecting all packets trough itself (blackhole attack) AODV = Ad-hoc On-demand Distance Vector Protocol Security-Aware AODV Protocol:  Security-Aware AODV Protocol Solutions: Restrict the intermediate nodes from originating RouteReply FurtherRouteRequest AODV = Ad-hoc On-demand Distance Vector Protocol

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