DocumentCode :
1674795
Title :
Secret Key Generation and Agreement in UWB Communication Channels
Author :
Madiseh, Masoud Ghoreishi ; McGuire, Michael L. ; Neville, Stephen S. ; Cai, Lin ; Horie, Michael
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC
fYear :
2008
Firstpage :
1
Lastpage :
5
Abstract :
It has been shown that the radio channel impulse response for a pair of legitimate Ultra-wide band (UWB) transceivers can be used to generate secret keys for secure communications. Past proposed secret key generation algorithms under-exploited the available number of secret key bits from the radio channel. This paper proposes a new efficient method for generation of the shared key where the transceivers use LDPC decoders to resolve the differences in their channel impulse response measurements caused by measurement noise. To ensure secret key agreement, a method of public discussion between the two users is performed using the syndrome from Hamming (7,3) binary codes. An algorithm is proposed to check the equality of generated keys for both legitimate users, and ensure error-free secure communication. The security of this algorithm has been verified by AVISPA. Comparisons are performed with previous work on secret key generation and it has been shown that this algorithm reliably generates longer secret keys in standard UWB radio channels.
Keywords :
parity check codes; telecommunication security; ultra wideband communication; wireless channels; LDPC decoders; UWB communication channels; binary codes; radio channel impulse response; secret key agreement; secret key generation; secure communications; ultra-wide band transceivers; Communication system security; Data security; Decoding; Noise generators; Noise measurement; Parity check codes; Random processes; Transceivers; Ultra wideband communication; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
ISSN :
1930-529X
Print_ISBN :
978-1-4244-2324-8
Type :
conf
DOI :
10.1109/GLOCOM.2008.ECP.356
Filename :
4698131
Link To Document :
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