FINGERPRINT-BASED KEY BINDING/RECOVERING SCHEME BASED ON FUZZY VAULT  

作　　者：Feng Quan Su Fei Cai Anni 

机构地区：[1]School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]School of Engineering, Gansu Agricultural University, Lanzhou 730070, China

出　　处：《Journal of Electronics(China)》2008年第3期415-421,共7页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.60472069)

摘　　要：This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are bound by a set of random data through the linear function. The number of the function’s variables is determined by the required number of matched minutiae. Then, a new key de- rived from the random data is used to encrypt the cryptographic key. Lastly, the binding data are protected using fuzzy vault scheme. The proposed scheme provides the system with the flexibility to use changeable number of minutiae to bind/recover the protected key and a unified method regardless of the length of the key.This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are bound by a set of random data through the linear function. The number of the function＇s variables is determined by the required number of matched minutiae. Then, a new key derived from the random data is used to encrypt the cryptographic key. Lastly, the binding data are protected using fuzzy vault scheme. The proposed scheme provides the system with the flexibility to use changeable number of minutiae to bind/recover the protected key and a unified method regardless of the length of the key.

关 键 词：BINDING Key recovering Fingerprint minutiae Fuzzy vault Multivariable linear function 

分 类 号：TN918.1[电子电信—通信与信息系统]