An Artifact-metric System Which Utilizes Inherent Texture (特集 21世紀のコンピュータセキュリティ技術)

概要

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We have studied on such an authentication system that statistically verifies intrinsic patterns from inherent texture of an individual artifact. Magnetic micro-fibers, which are scattered randomly throughout the substrate of an artifact, form inherent texture of magnetic property. We have found that this inherent texture can be used for clone prevention. FibeCrypt is an artifact-metric system which examines and authenticates artifacts using both an intrinsic pattern from the inherent texture and a pre-stored reference data protected by a digital signature. In this paper we expound schemes and features of FibeCrypt, and then detail the stored-value card system to which we have applied FibeCrypt. We illustrate results of performance tests for the system. According to our evaluation for the accuracy of authentication of the system, the equal error rate(EER)is 1.5×10^<-4> without retrying. We estimate the accuracy of authentication when we apply a retrying sequence or a double-check scheme. Finally, we describe how to evaluate security of the system, and then discuss, based on the EER, security against a brute force attack by using samples of intrinsic patterns and recorded data. Security against cloning intrinsic patterns is also examined.
一般社団法人情報処理学会の論文
2001-08-15