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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Secure Hashing of Dynamic Hand Signatures Using Wavelet-Fourier Compression with BioPhasor Mixing and 2N Discretization | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 59125 8 pages doi 10.1155 2007 59125 Research Article Secure Hashing of Dynamic Hand Signatures Using Wavelet-Fourier Compression with BioPhasor Mixing and 2N Discretization Yip Wai Kuan Andrew B. J. Teoh and David C. L. Ngo Faculty of Information Science and Technology FIST Multimedia University Jalan AyerKeroh Bukit Beruang Melaka 75450 Malaysia Received 28 February 2006 Revised 23 July 2006 Accepted 18 September 2006 Recommended by Bulent Sankur We introduce a novel method for secure computation of biometric hash on dynamic hand signatures using BioPhasor mixing and 2n 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 2N 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 ofdynamic 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 0 and 9.4 for random and skilled forgeries for stolen token worst case scenario and 0 for both forgeries in the genuine token optimal scenario. Copyright 2007 Yip Wai Kuan et al. 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. 1. INTRODUCTION Recently there is a growing interest in applying biometric for authentication .
