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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
computer science
Authentication over noisy channels
IEEE Transactions on Information Theory, Volume 55, No. 2, Year 2009
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Description
An authentication counterpart of Wyner's study of the wiretap channel is developed in this work. More specifically, message authentication over noisy channels is studied while impersonation and substitution attacks are investigated for both single- and multiple-message scenarios. For each scenario, information-theoretic lower and upper bounds on the opponent's success, or cheating, probability are derived. Remarkably, in both scenarios, the lower and upper bounds are shown to match, and hence, the fundamental limits on message authentication over noisy channels are fully characterized. The opponent's success probability is further shown to be smaller than that derived in the classical noiseless channel model. These results rely on a novel authentication scheme in which shared key information is used to provide simultaneous protection against both types of attacks. Finally, message authentication for the case in which the source and receiver possess only correlated sequences is studied. © 2009 IEEE.
Authors & Co-Authors
Lai, Lifeng
United States, Princeton
Princeton University
El-Gamal, Hesham
United States, Columbus
The Ohio State University
Egypt, 6th October
Nile University
Vincent Poor, H. Vincent
United States, Princeton
Princeton University
Statistics
Citations: 103
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.1109/TIT.2008.2009842
ISSN:
00189448