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Buhan, I.R. and Doumen, J.M. and Hartel, P.H. and Veldhuis, R.N.J.
(2007)
Constructing practical Fuzzy Extractors using QIM.
Technical Report TR-CTIT-07-52,
Centre for Telematics and Information Technology University of Twente, Enschede.
ISSN 1381-3625
Full text available as:  AbstractFuzzy extractors are a powerful tool to extract randomness from noisy
data. A fuzzy extractor can extract randomness only if the source data is discrete
while in practice source data is continuous. Using quantizers to transform
continuous data into discrete data is a commonly used solution. However,
as far as we know no study has been made of the effect of the quantization
strategy on the performance of fuzzy extractors. We construct the
encoding and the decoding function of a fuzzy extractor using quantization
index modulation (QIM) and we express properties of this fuzzy extractor in
terms of parameters of the used QIM. We present and analyze an optimal (in
the sense of embedding rate) two dimensional construction. Our 6-hexagonal
tiling construction offers  extra bits per dimension of the
space compared to the known square quantization based fuzzy extractor. | Item Type: | Internal Report (Technical Report) |
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| Research Group: | EWI-DIES: Distributed and Embedded Security, EWI-SAS: Signals and Systems |
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| Research Program: | CTIT-ISTRICE: Integrated Security and Privacy in a Networked World |
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| Research Project: | Secure Grip |
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| ID Code: | 10785 |
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| Deposited On: | 24 July 2007 |
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| More Information: | statisticsmetis |
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