Title :
Secret key establishment over a pair of independent broadcast channels
Author :
Ahmadi, Hadi ; Safavi-Naini, Reihaneh
Author_Institution :
Dept. of Comput. Sci., Univ. of Calgary, Calgary, AB, Canada
Abstract :
We consider the problem of secret key establishment (SKE) in the presence of a passive adversary, Eve, when Alice and Bob are connected by a pair of independent discrete memoryless broadcast channels in opposite directions. We refer to this setup as 2DMBC. We define the secret-key capacity in this setup and provide a lower bound on the capacity by proposing a two-round SKE protocol. We also prove an upper bound and show that the two bounds coincide in the case of degraded 2DMBCs.
Keywords :
broadcast channels; cryptographic protocols; memoryless systems; telecommunication security; 2DMBC; independent discrete memoryless broadcast channel; secret key establishment; secret-key capacity; two-round SKE protocol; Decoding; Encoding; Markov processes; Protocols; Random variables; Uncertainty; Upper bound;
Conference_Titel :
Information Theory and its Applications (ISITA), 2010 International Symposium on
Conference_Location :
Taichung
Print_ISBN :
978-1-4244-6016-8
Electronic_ISBN :
978-1-4244-6017-5
DOI :
10.1109/ISITA.2010.5650100
