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Published in:
2012 | OriginalPaper | Chapter
Query Assurance Verification for Outsourced Database
Author : Pengtao Liu
Published in: Advances in Future Computer and Control Systems
Publisher: Springer Berlin Heidelberg
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In outsourced database model, database faces potential threats from malicious database service providers. To provide correctness, completeness and freshness of query result sets, security mechanisms are needed to assure that queries are executed against the most up-to-date data, and the query results have not been tempered with and are authentic with respect to the actual data owner. As an improvement of the existing authenticated-data-structure-based method called chain embedded signature, a new integrity checking scheme is proposed. The scheme redefines the predecessor and successor tuples so that it can handle the situation with duplicate attribute values. Cryptographic dynamic accumulator is used to ensure freshness of query results.