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Secure operation of mobile ad-hoc networks requires the ability to track the flow of traffic through the network. Knowledge of the path of a packet allows inference of correct operation or potential attacks. In prior work, we have described a number of different techniques for recording such path information and ensuring its correctness through cryptographic techniques. In this paper, we evaluate...
This paper develops reliable distributed publish/subscriber algorithms with service availability in the face of concurrent crash failure of up to delta brokers. The reliability of service in our context refers to per-source in-order and exactly-once delivery of publications to matching subscribers. To handle failures, brokers maintain data structures that enable them to reconnect the topology and...
This paper proposes a new token-based mutual exclusion algorithm for directed graph topology, with or without cycles. In one of our earlier works, we have introduced a token based algorithm assuming an inverted tree topology. Such a stable, hierarchical topology is quite unrealistic for mobile networks due to frequent link failures and node mobility. The proposed solution overcomes this. Besides maintaining...
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