Title :
Cryptographic keys from dynamic hand-signatures with biometric secrecy preservation and replaceability
Author :
Kuan, Yip Wai ; Goh, Alwyn ; Ngo, C.L.D. ; Teoh, B.J.A.
Author_Institution :
Fac. of Info. Sci. & Tech., Multimedia Univ., Melaka, Malaysia
Abstract :
We propose a method of extracting cryptographic key from dynamic handwritten signatures that does not require storage of the biometric template or any statistical information that could be used to reconstruct the biometric data. Also, the keys produced are not permanently linked to the biometric hence, allowing them to be replaced in the event of key compromise. This is achieved by incorporating randomness which provides high-entropy to the naturally low-entropy biometric key using iterative inner-product method as in Goh-Ngo, and modified multiple-bit discretization that deters guessing from key statistics. Our proposed methodology follows the design principles of block ciphers to result in unpredictable key space and secure construction.
Keywords :
entropy; handwriting recognition; handwritten character recognition; iterative methods; private key cryptography; telecommunication security; biometric secrecy preservation; block cipher; cryptographic key extraction; dynamic hand-signature; dynamic handwritten signature; iterative inner-product method; low-entropy biometric key; modified multiple-bit discretization; Bioinformatics; Biometrics; Cryptographic protocols; Cryptography; Data mining; Design methodology; Iris; Iterative methods; Security; Statistics;
Conference_Titel :
Automatic Identification Advanced Technologies, 2005. Fourth IEEE Workshop on
Print_ISBN :
0-7695-2475-3
DOI :
10.1109/AUTOID.2005.17