Mitigating routing misbehavior in mobile ad hoc networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Security-aware ad hoc routing for wireless networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Intrusion detection techniques for mobile wireless networks
Wireless Networks
Detecting Malicious Beacon Nodes for Secure Location Discovery in Wireless Sensor Networks
ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
Group Key Management in Wireless Networks Using Session Keys
ITNG '06 Proceedings of the Third International Conference on Information Technology: New Generations
An Efficient Key Revocation Protocol for Wireless Sensor Networks
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
TrueLink: A Practical Countermeasure to the Wormhole Attack in Wireless Networks
ICNP '06 Proceedings of the Proceedings of the 2006 IEEE International Conference on Network Protocols
Key revocation for identity-based schemes in mobile ad hoc networks
ADHOC-NOW'06 Proceedings of the 5th international conference on Ad-Hoc, Mobile, and Wireless Networks
On bluetooth repairing: key agreement based on symmetric-key cryptography
CISC'05 Proceedings of the First SKLOIS conference on Information Security and Cryptology
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Security and robustness are paramount in wireless embedded systems due to the vulnerability of the underlying communication medium. To institute security and reliability, most of the existing schemes perform periodic re-establishment of authentication credentials and share secrets among various participating nodes. However, such measures result in overheads in an energy-constrained wireless environment. To alleviate this problem, we propose a software approach that exploits the features of the underlying communication protocol and uses the concept of steganography and covert channels. The highlight of our approach is that it does not require any changes to the protocol and relies only on the modification of frame contents without degrading the protocol performance. We argue that our covert-channel based communication scheme provides security and robustness at low cost and it neither requires centralized authority nor does it disrupt the overall network operation. We evaluate the security benefits of our proposed method in terms of the difficulty of detecting the covert channel by the adversary and compare our technique with other existing schemes. Performance evaluation is done by determining the bandwidth efficiency of the channel, backward compatibility with the standard MAC as well as the ease of implementation.