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On biometric key generation from handwritten signatures

: Scheuermann, D.; Wolfgruber, B.; Henniger, O.

Postprint urn:nbn:de:0011-n-1796115 (202 KByte PDF)
MD5 Fingerprint: d58d7db4fdbdb2d4969cbf006fbd5bea
Erstellt am: 29.9.2011

Brömme, A.; Busch, C. ; Gesellschaft für Informatik -GI-, Bonn:
BIOSIG 2011, International Conference of the Biometrics Special Interest Group. Proceedings : 08.-09.09.2011, Darmstadt
Bonn: Köllen, 2011 (GI-Edition - Lecture Notes in Informatics (LNI) - Proceedings 191)
ISBN: 978-3-88579-285-7
ISSN: 1617-5468
Gesellschaft für Informatik, Special Interest Group on Biometrics and Electronic Signatures (BIOSIG Annual Conference) <9, 2011, Darmstadt>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer SIT ()
biometric; key generation; handwritten signature

This paper investigates the extraction of a reproducible bit string referred to as biometric key from biometric data. This is difficult due to the natural variability of biometric data. If the biometric-key generation process were sufficiently resistant against attacks, a biometric key may be used e.g. as basis for the generation of application-specific user passwords. Handwritten signatures or handwritten signs have been chosen because of their high level of user acceptance and because the exchange of compromised keys is possible by using other phrases to write. The experimental results show an insufficient reproducibility of the biometric keys if no auxiliary data is used for smoothing out the natural variability of the presented data.