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Proceedings Paper

Secret sharing using biometric traits
Author(s): Alisher Kholmatov; Berrin Yanikoglu; Erkay Savas; Albert Levi
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Paper Abstract

In biometric based authentication, biometric traits of a person are matched against his/her stored biometric profile and access is granted if there is sufficient match. However, there are other access scenarios, which require participation of multiple previously registered users for a successful authentication or to get an access grant for a certain entity. For instance, there are cryptographic constructs generally known as secret sharing schemes, where a secret is split into shares and distributed amongst participants in such a way that it is reconstructed/revealed only when the necessary number of share holders come together. The revealed secret can then be used for encryption or authentication (if the revealed key is verified against the previously registered value). In this work we propose a method for the biometric based secret sharing. Instead of splitting a secret amongst participants, as is done in cryptography, a single biometric construct is created using the biometric traits of the participants. During authentication, a valid cryptographic key is released out of the construct when the required number of genuine participants present their biometric traits.

Paper Details

Date Published: 17 April 2006
PDF: 9 pages
Proc. SPIE 6202, Biometric Technology for Human Identification III, 62020W (17 April 2006); doi: 10.1117/12.666146
Show Author Affiliations
Alisher Kholmatov, Sabanci Univ. (Turkey)
Berrin Yanikoglu, Sabanci Univ. (Turkey)
Erkay Savas, Sabanci Univ. (Turkey)
Albert Levi, Sabanci Univ. (Turkey)

Published in SPIE Proceedings Vol. 6202:
Biometric Technology for Human Identification III
Patrick J. Flynn; Sharath Pankanti, Editor(s)

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