Optimized helper data scheme for biometric verification under zero leakage constraint

J.A. Groot, de, J.P.M.G. Linnartz

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

In biometric verication, special measures are needed to prevent that a dishon- est verier can steal privacy-sensitive information about the prover from the template database. We introduce an improved version of the zero leakage quan- tization scheme, which optimizes detection performance in terms of the false rejection ratio. Our scheme ensures zero leakage, that is, zero mutual informa- tion between auxiliary verication data and the protected enrolled secret and guarantees a uniformly distributed secret. Moreover, our solution replaces the helper data in the template database by a user specic threshold and eliminates the pre-distortion in the verication phase, which allows very rapid verication algorithms. Although the false rejection rate was only reduced by 20% for well correlated biometric features, it can be shown that this particular scheme achieves optimal detection under our requirements.
Original languageEnglish
Title of host publicationProceedings of the 33rd WIC Symposium on Information Theory in the Benelux, 24-25 May 2012, Boekelo, Netherlands
Place of PublicationEefde
PublisherWerkgemeenschap voor Informatie- en Communicatietheorie (WIC)
Pages108-116
ISBN (Print)978-1-62276-106-7
Publication statusPublished - 2012
Eventconference; 33rd WIC Symposium on Information Theory in the Benelux; 2012-05-24; 2012-05-25 -
Duration: 24 May 201225 May 2012

Conference

Conferenceconference; 33rd WIC Symposium on Information Theory in the Benelux; 2012-05-24; 2012-05-25
Period24/05/1225/05/12
Other33rd WIC Symposium on Information Theory in the Benelux

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