文件名称：Entropy Analysis and New Constructions of Biometric Key Generation Systems
文件大小：294KB
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更新时间：2015-08-27 04:14:41
Entropy Biometric Key Generation
生物特征加密的一些论文Abstract—In this paper, a new, soft two-level approach for the generation of multiple and revocable biometric keys, adapted to the analog nature of biometric signals, is proposed. It consists of a novel randomized soft code-offset construction for the Euclidean metric, at the first level, and a code-redundancy construction for the Hamming metric, possibly based on a Reed–Solomon code, at the second level. The Shannon entropy analysis shows that the new construction achieves optimal security with respect to biometric template protection, whereas the previously proposed constructions for the Euclidean metric are shown to be insecure in the multiple-key setting.