SOFT GENERATION OF BIOMETRIC CANDIDATES AND REFERENCES BASED ON EMPIRICAL BIT ERROR PROBABILITY

摘要

A biometric verification device (100) arranged to compare a reference hash (480) with a verification bit string (420) obtained from a biometric, the biometric verification device comprising: - a candidate bit string generator (130) arranged to generate candidate bit strings (430) from the verification bit string and error probabilities, - a hash unit (140) arranged to apply a cryptographic hash function to said generated candidate bit strings to obtain candidate hashes, - a comparison unit (160) arranged to verify if a candidate hash generated by the hash unit matches a reference hash.