Soft generation of biometric feature candidates and criteria based on empirical bit error probability

摘要

The biometric feature verification device (100) configured to compare the reference hash (480) with the verification bit sequence (420) obtained from the biometric feature generates a candidate bit sequence (430) from the verification bit sequence and the error probability. A candidate bit string generator (130) configured as described above, a hash unit (140) configured to apply a cryptographic hash function to the generated candidate bit string to obtain a candidate hash, and a hash unit A comparison unit (160) configured to verify whether the generated candidate hash matches the reference hash.