A new threshold signature scheme based on fuzzy biometric identity

The focus of this paper is to present the first threshold signature scheme based on biometric identity, which is acquired from a recently proposed fuzzy identities-based encryption scheme. An important feature of this scheme, which is different from other previous ID-based threshold signature schemes, is that it can be applied to situations using not only average personal attributes in social contact but also people’s noisy biometric inputs as identities. The security of our scheme in the selective-ID model reduces the limit in the hardness of the Decisional BDH Assumption.