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Conference Paper
Inverse Operation and Preimage Attack on BioHashing
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- Authors
- Yong Jin Lee, Yun Su Chung, Ki Young Moon
- Issue Date
- 2009-03
- Citation
- Workshop on Computational Intelligence in Biometrics (CIB) 2009, pp.92-97
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- BioHashing generates a BioCode from a user's biometric features by projecting them onto user-specific random vectors and then discritizes the projection coefficients into zero or one. Since biometric features are distorted by the noninvertible transforms and template matching is performed in a transformed state, it has been claimed that BioHashing is oneway and a BioCode is as secure as a hashed password. However, we disprove it by showing that even without a genuine's private random vectors, a preimage of a BioCode is easily calculated from a lost BioCode and an attacker can gain an illegal access to a system. © 2009 IEEE.