Evaluation of security for biometric guessing attacks in biometric cryptosystem using fuzzy commitment scheme
Seira Hidano, Tetsushi Ohki, Kenta Takahashi · 2012
Abstract: Biometric authentication based on template protection has attracted atten-tion in the past decade. In the discussion on the security of these systems, however, the content of biometric information is assumed to be sufficiently large, and real con-ditions of biometric features have not yet been reflected. This paper focuses on a biometric cryptosystem using a fuzzy commitment scheme and demonstrates correla-tion between fingerprint bit strings by using our method for evaluating the content of biometric information. Additionally, attacks to guess biometric bit strings, which take advantage of correlation between them, are explained, and the security against these attacks is theoretically and experimentally discussed. 1