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  • Open Access

Secure Hashing of Dynamic Hand Signatures Using Wavelet-Fourier Compression with BioPhasor Mixing and Discretization

EURASIP Journal on Advances in Signal Processing20062007:059125

https://doi.org/10.1155/2007/59125

Received: 28 February 2006

Accepted: 18 September 2006

Published: 17 December 2006

Abstract

We introduce a novel method for secure computation of biometric hash on dynamic hand signatures using BioPhasor mixing and discretization. The use of BioPhasor as the mixing process provides a one-way transformation that precludes exact recovery of the biometric vector from compromised hashes and stolen tokens. In addition, our user-specific discretization acts both as an error correction step as well as a real-to-binary space converter. We also propose a new method of extracting compressed representation of dynamic hand signatures using discrete wavelet transform (DWT) and discrete fourier transform (DFT). Without the conventional use of dynamic time warping, the proposed method avoids storage of user's hand signature template. This is an important consideration for protecting the privacy of the biometric owner. Our results show that the proposed method could produce stable and distinguishable bit strings with equal error rates (EERs) of and for random and skilled forgeries for stolen token (worst case) scenario, and for both forgeries in the genuine token (optimal) scenario.

Keywords

Error RateQuantum InformationError CorrectionDiscrete Wavelet TransformDiscrete Fourier Transform

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Authors’ Affiliations

(1)
Faculty of Information Science and Technology (FIST), Multimedia University, Bukit Beruang, Malaysia

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Copyright

© Yip Wai Kuan et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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