基于指纹和手指静脉特征融合的模板保护方法  

Template protection method based on fingerprint and finger vein feature fusion

作　　者：董芸嘉 张雪锋[1] 姜文[2] DONG Yunjia;ZHANG Xuefeng;JIANG Wen(School of Cyberspace Security,Xi’an University of Post&Telecommunications,Xi’an 710121,China;National Internet Emergency Center,Beijing 100029,China)

机构地区：[1]西安邮电大学网络空间安全学院,陕西西安710121 [2]国家计算机网络应急技术处理协调中心,北京100029

出　　处：《传感器与微系统》2022年第11期9-13,共5页Transducer and Microsystem Technologies

基　　金：陕西省教育厅专项科学研究计划资助项目(18JK0717)。

摘　　要：针对单模态生物特征模板保护方法存在的识别性能较差和安全性较低等问题,提出了一种基于指纹与手指静脉特征融合的可撤销模板保护方法。该方法将指纹和手指静脉特征进行串联融合,得到融合后的特征向量通过随机置乱和离散傅里叶变换(DFT)运算,最终通过部分Hadamard变换生成可撤销的多模态生物特征模板。该特征模板中包含了指纹和手指静脉两种生物特征向量,具有较好的区分性和安全性。理论和实验仿真结果表明:该方法满足不可逆性和可撤销性,与现有方法相比,具有较好的认证性能和安全性。Aiming at the problem of poor recognition performance and low security of single-modal biometric template protection method, a revocable template protection method based on fingerprint and finger vein feature fusion is proposed.This method fuses fingerprint and finger vein features in series, the fused feature vector is obtained through random scrambling and discrete Fourier transform(DFT)operation, and finally a revocable multi-modal biological feature template is generated through partial Hadamard transformation.The feature template contains two biometric feature vectors of fingerprints and finger veins, which has better distinguishability and security.Theoretical and experimental simulation results show that this method meets irreversibility and revocation, and has better authentication performance and security compared with existing methods.

关 键 词：特征融合 部分Hadamard变换 多模态生物特征模板 指纹 手指静脉 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]