Generation of replaceable cryptographic keys from dynamic handwritten signatures

Authors:
W. K. Yip;A. Goh;David Chek Ling Ngo;Andrew Beng Jin Teoh
Affiliations:
Faculty of Information Science and Technology (FIST), Multimedia University, Bukit Beruang, Melaka, Malaysia;Corentix Technologies Sdn Bhd, Petaling Jaya, Selangor, Malaysia;Faculty of Information Science and Technology (FIST), Multimedia University, Bukit Beruang, Melaka, Malaysia;Faculty of Information Science and Technology (FIST), Multimedia University, Bukit Beruang, Melaka, Malaysia
Venue:
ICB'06 Proceedings of the 2006 international conference on Advances in Biometrics
Year:
2006

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Abstract

In this paper, we present a method for generating cryptographic keys that can be replaced if the keys are compromised and without requiring a template signature to be stored. The replaceability of keys is accomplished using iterative inner product of Goh-Ngo [1] Biohash method, which has the effect of re-projecting the biometric into another subspace defined by user token. We also utilized a modified Chang et al [2] Multi-state Discretization (MSD) method to translate the inner products into binary bit-strings. Our experiments indicate encouraging result especially for skilled and random forgery whereby the equal error rates are