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15430 Method of and device for querying of protected structured data
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Jonker, W. and Brinkman, R. and Doumen, J.M. and Schoenmakers, B. (2005) Method of and device for querying of protected structured data. Patent WO2005116792 (Assigned).

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Official URL: http://v3.espacenet.com/textdoc?IDX=WO2005116792

Abstract

Method of and device for querying of protected data structured in the form of a tree. A corresponding tree of node polynomials is constructed such that each node polynomial evaluates to zero for an input equal to an identifier assigned to a node name occurring in a branch of the data tree starting with the node in question. A tree of blinding polynomials and a tree of difference polynomials are constructed such that each polynomial in the tree of node polynomials equals the sum of the corresponding polynomial in the tree of blinding polynomials and the corresponding polynomial in the tree of difference polynomials. The blinding tree is given to a client, the difference tree to a server. By combining the outcomes of the evaluations of the client and the server, it is possible to identify nodes that match a given query.

Item Type:Patent
Research Group:EWI-DIES: Distributed and Embedded Security, EWI-DB: Databases
Research Program:CTIT-ISTRICE: Integrated Security and Privacy in a Networked World
Research Project:Secure Meta Data: Secure Content Management In Ambient Environments
ID Code:15430
Deposited On:16 June 2009
International:Yes
More Information:statistics

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