Privacy leakage in fuzzy commitment schemes

T. Ignatenko

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

In 1999 Juels and Wattenberg introduced the fuzzy commitment scheme. Fuzzy commitment is a particular realization of a binary biometric secrecy system with a chosen secret key. Three cases of biometric sources are considered, i.e. memory- less and totally-symmetric biometric sources, memoryless and input-symmetric biometric sources, and memoryless biometric sources. It is shown that fuzzy commitment is only optimal for memoryless totally-symmetric biometric sources and only at the maximum secret-key rate. Moreover, it is demonstrated that for memoryless biometric sources, which are not input-symmetric, the fuzzy com- mitment scheme leaks information on both the secret key and the biometric data.
Originele taal-2Engels
TitelProceedings of the 30th Symposium on Information Theory in the Benelux, May 28-29, 2009, Eindhoven, The Netherlands
RedacteurenTj. Tjalkens, F.M.J. Willems
Plaats van productieEindhoven
UitgeverijTechnische Universiteit Eindhoven
Pagina's185-192
ISBN van geprinte versie978-90-386-1852-4
StatusGepubliceerd - 2009

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