Abstract: With the broad application of various biometric technologies, their deficiencies on safety are gradually ex- posed. The biometric encryption technology, as the combination of biometric recognition and cryptography technology, was proposed to ensure the safe usage of biometrics. Based on our previous researches on face biometrics, we proposed a face-hashing algorithm,i. e. Fuzzy Cyclic Random Mapping(FCRM) , which considers both the security and the fault tol- erance. In each cycle, the encryption model utilizes the key of the previous cycle as a random seed to generate a mapping matrix and makes random mapping of the face features. hhus the proposed algorithm forms a cyclic random mapping process. We also adopted the fault tolerant technology in the proposed algorithm to reduce the impact of random noise existing in the face images of the genuine users,while the cyclic mapping process can simultaneously prevent the impos- to to authenticate the system without reducing the accuracy.

Key words: Face recognition, I3iometric encryption, I3iometric hashing