Fuzzy extractors for continuous distributions

We show that there is a direct relation between the maximum length of the keys extracted from biometric data and the error rates of the biometric system. The length of the bio-key depends on the amount of distinguishing information that can be extracted from the source data. This information can be used a-priori to evaluate the potential of the biometric data in the context of a specific cryptographic application. We model the biometric data more naturally as a continuous distribution and we give a new definition for fuzzy extractors that works better for this type of data.

• Type: Conference
• Year: 2007
• Where: CCS
• Authors: Ileana Buhan, Jeroen Doumen, Pieter H. Hartel, Raymond N. J. Veldhuis
• Keywords: Biometric Data, Biometric System, CCS 2007, Security Privacy, Specific Cryptographic Application