A Fuzzy Commitment Cryptosystem Based on One Permutation Hashing

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Ce Gao, Weiwei Wang, Yuxing Li, Zhicheng X. Cao, Heng Zhao

Published: 2024, Last Modified: 13 Nov 2025CCBR (2) 2024EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Fuzzy commitment scheme (FCS), an important method to encrypt biometrics, binds keys and biometrics which is not easy to be attacked and has high security. However, there are relatively few researched and well-established effective designs for fingerprint-oriented FCS. The main reason is the adaptability between the fingerprint feature extraction method and the fixed-length binary features required by the FCS. This paper introduces a novel fingerprint template protection method, integrating One Permutation Hashing (OPH) and FCS. The system does not need fingerprint alignment, and extracts the fixed-length binary codes of fingerprints with the advantages of irreversibility, unlinkability and revocability. After binding the binary codes with the key, only the hash value of the key is retained, which makes the key better secured while performing fingerprint encryption. Experimental evaluations conducted on six fingerprint datasets from FVC2002 and FVC2004 reveal a high comparison performance of the proposed method than other existing state-of-the-art. Meanwhile, a multi-user fuzzy commitment cryptosystem (MFCC) is proposed on the basis of the FCS based on OPH, which can realize the privacy data delivery using biometric features, and the feasibility of this encryption platform is verified by the encryption and decryption performance experiments.