Optional Multi-biometric Cryptosystem Based on Fuzzy Extractor
Following the wide use of smart devices,biometric cryptosystem is used to protect users privacy data.However,biometric cryptosystem is rarely used in the scenario of mobile cloud,because the biometric sensors are different on various devices.In this paper,an optional multi-biometric cryptosystem based on fuzzy extractor and secret share technology is proposed.Each of the enrolled biometric modality generates a feature vector,and then the feature vector is put into a fuzzy extractor to get a stable codeword,namely a bit-string.All the codewords are used to bind a random key based on a secret share method,and the key can be used to encrypt users privacy data.During the verification phase,part of the enrolled biometric modalities are enough to recover the random key.Therefore,the proposed scheme can provide a user the same biometric key on different devices.In addition,experiment on a virtual multi-biometric database shows that the novel concept of optional multi-biometric cryptosystem is better than the corresponding uni-biometric cryptosystem both in matching accuracy and key entropy.
fuzzy extractor multi-biometric cryptosystem secret share key generation mobile cloud
Chi Chen Chaogang Wang Tengfei Yang Dongdai Lin Song Wang Jiankun Hu
State Key Laboratory of Information Security Institute of Information Engineering, CAS Beijing, Chin School of Engineering and Information Technology The University of new South Wales Canberra, Austral
国际会议
厦门
英文
1001-1006
2014-08-19（万方平台首次上网日期，不代表论文的发表时间）