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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Database Fragmentation with Encryption: Under Which Semantic Constraints and A Priori Knowledge Can Two Keep a Secret?
verfasst von : Joachim Biskup, Marcel Preuß
Erschienen in: Data and Applications Security and Privacy XXVII
Verlag: Springer Berlin Heidelberg
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Database outsourcing to semi-honest servers raises concerns against the confidentiality of sensitive information. To hide such information, an existing approach splits data among two supposedly mutually isolated servers by means of fragmentation and encryption. This approach is modelled logic-orientedly and then proved to be confidentiality preserving, even if an attacker employs some restricted but nevertheless versatile class of a priori knowledge to draw inferences. Finally, a method to compute a secure fragmentation schema is developed.