Haruna Higo, Toshiyuki IsshikiDamer, NaserGomez-Barrero, MartaRaja, KiranRathgeb, ChristianSequeira, Ana F.Todisco, MassimilianoUhl, Andreas2023-12-122023-12-122023978-3-88579-733-31617-5468https://dl.gi.de/handle/20.500.12116/43268Just as biometric authentication has replaced conventional authentication methods to improve convenience and security, fuzzy signatures (FS), a technique that replaces the signing key of a digital signature with biometric information, has been studied. This paper proposes biometricindependent fuzzy signature (BIFS), a novel FS primitive that enables biometric-independent verification, which is inherently unsolvable with conventional FS. To circumvent that problem, BIFS generates signatures through a two-party protocol using biometric information and helper keys. We also propose a construction of BIFS that can easily replace existing signature services because the signature and verification keys are in the same form as those of digital signatures.enOther emerging applicationsText/Conference Paper