A Novel Biometric Identification Scheme Based on Zero-Knowledge Succinct Noninteractive Argument of Knowledge

Biometric identification is a convenient and reliable method in identity authentication. The widespread adoption of biometric requires strong privacy protection against possible theft or loss data. Existing techniques for privacy-preserving mainly rely on traditional cryptographic technology such as oblivious transfer homomorphic encryption, which will incur huge expenses to the system cannot be applied large-scale practical applications. For these issues, we propose scheme by constructing zero-knowledge succinct noninteractive argument knowledge (zk-SNARK). Our not only reduces communication overhead, needs send 8 constants verifier but also can protect fingerprint template from disclosure. time complexity proof generation verification are about O(C) O x + log C , respectively, size constants, where C x represent circuit public input, respectively. We have implemented proposed authentication solution data set images evaluated performance security.