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Publication Detail
Efficient negative databases from cryptographic hash functions
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Conference Proceeding
  • Authors:
    Danezis G, Diaz C, Faust S, Kasper E, Troncoso C, Preneel B
  • Publication date:
    01/12/2007
  • Pagination:
    423, 436
  • Journal:
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
  • Volume:
    4779 LNCS
  • Status:
    Published
  • Print ISSN:
    0302-9743
Abstract
A negative database is a privacy-preserving storage system that allows to efficiently test if an entry is present, but makes it hard to enumerate all encoded entries. We improve significantly over previous work presented at ISC 2006 by Esponda et al. [9], by showing constructions for negative databases reducible to the security of well understood primitives, such as cryptographic hash functions or the hardness of the Discrete-Logarithm problem. Our constructions require only Ο(m) storage in the number m of entries in the database, and linear query time (compared to Ο(1 · m) storage and Ο(1 ·) query time, where i is a security parameter.) Our claims are supported by both proofs of security and experimental performance measurements. © Springer-Verlag Berlin Heidelberg 2007.
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