On fuzzy syndrome hashing with LDPC coding

Details On fuzzy syndrome hashing with LDPC coding On fuzzy syndrome hashing with LDPC coding

2011-07-08

arxiv.org/abs/1107.1600v2

Computer Science

Information Theory

in Proceedings 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL), ACM 2011

Scientific paper

The last decades have seen a growing interest in hash functions that allow some sort of tolerance, e.g. for the purpose of biometric authentication. Among these, the syndrome fuzzy hashing construction allows to securely store biometric data and to perform user authentication without the need of sharing any secret key. This paper analyzes this model, showing that it offers a suitable protection against information leakage and several advantages with respect to similar solutions, such as the fuzzy commitment scheme. Furthermore, the design and characterization of LDPC codes to be used for this purpose is addressed.

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