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On fuzzy syndrome hashing with {LDPC} coding

Type of publication Peer-reviewed
Publikationsform Proceedings (peer-reviewed)
Author Baldi M., Bianchi M., Chiaraluce F., Rosenthal J., Schipani D.,
Project New Cryprosystems based on Algebra
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Proceedings (peer-reviewed)

Title of proceedings ISABEL '11 Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Comm
DOI 10.1145/2093698.2093722


The last decades have seen a growing interest in hash func- tions 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 biomet- ric data and to perform user authentication without the need of sharing any secret key. This paper analyzes such a model, showing that it offers a suitable protection against informa- tion leakage and several advantages with respect to similar solutions, like the fuzzy commitment scheme. The design and characterization of LDPC codes to be used for this pur- pose is also addressed.