tailieunhanh - Báo cáo hóa học: " Research Article Anonymous Biometric Access Control"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Anonymous Biometric Access Control | Hindawi Publishing Corporation EURASIP Journal on Information Security Volume 2009 Article ID 865259 17 pages doi 2009 865259 Research Article Anonymous Biometric Access Control Shuiming Ye Ying Luo Jian Zhao and Sen-Ching S. Cheung Center for Visualization and Virtual Environments University of Kentucky Lexington KY 40507-1464 USA Correspondence should be addressed to Sen-Ching S. Cheung cheung@ Received 21 April 2009 Accepted 15 September 2009 Recommended by Deepa Kundur Access control systems using the latest biometric technologies can offer a higher level of security than conventional passwordbased systems. Their widespread deployments however can severely undermine individuals rights of privacy. Biometric signals are immutable and can be exploited to associate individuals identities to sensitive personal records across disparate databases. In this paper we propose the Anonymous Biometric Access Control ABAC system to protect user anonymity. The ABAC system uses novel Homomorphic Encryption HE based protocols to verify membership of a user without knowing his her true identity. To make HE-based protocols scalable to large biometric databases we propose the k-Anonymous Quantization kAQ framework that provides an effective and secure tradeoff of privacy and complexity. kAQ limits server s knowledge of the user to k maximally dissimilar candidates in the database where k controls the amount of complexity-privacy tradeoff. kAQ is realized by a constanttime table lookup to identity the k candidates followed by a HE-based matching protocol applied only on these candidates. The maximal dissimilarity protects privacy by destroying any similarity patterns among the returned candidates. Experimental results on iris biometrics demonstrate the validity of our framework and illustrate a practical implementation of an anonymous biometric system. Copyright 2009 Shuiming Ye et al. This is an open access article distributed under the Creative Commons .