An efficient unobservable routing scheme resistant against DoS attacks
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2012, Vol 1, Issue 10
Abstract
Privacy protection for ad hoc networks with low-power wireless devices and lowbandwidth network connection is a very challenging task. A number of anonymous routing schemes have been proposed for ad hoc networks to provide better support for privacy protection but bring significant computation overhead. The existing system introduces efficient privacypreserving routing protocol USOR that achieves content unobservability by employing anonymous key establishment based on group signature in which each node obtain a group signature signing key and an ID-based private key from an offline key server or by a key management scheme. The unobservable routing protocol is then executed in two phases such as anonymous key establishment process and unobservable route discovery process in order to construct secret session keys as well as finding route to the destination. The USOR scheme is protect packet’s content independent of traffic pattern unobservability which can be used with appropriate traffic padding schemes to achieve truly communication unobservability. Although it performs well wormhole attacks cannot be prevented in USOR mechanism. The proposed system aimed at developing unobservable routing scheme resistant against DoS attacks such as Gray hole/Black hole attacks to protect network-layer reactive protocols. It discovers malicious nodes during route discovery process when they mitigate fabricated routing information to attract the source node to send data through malformed packet. Security analysis demonstrates that USOR can well protect userprivacy against internal and external attackersand simulation results show that it achieves stronger privacy protection than existing schemes.
Authors and Affiliations
Chithra K , Dr. S. Karthik
Keywords
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