The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Apr. 27, 2015
Emc Corporation, Hopkinton, MA (US);
Dimitrios Papadopoulos, Brighton, MA (US);
Nikolaos Triandopoulos, Arlington, MA (US);
Ran Canetti, Brookline, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Methods and apparatus are provided for authenticated hierarchical set operations. A third party server processes a query (possibly from a client) on data sets outsourced by a source of the data. The query comprises a hierarchical set operation between at least two of the data sets. Authenticated Set Operation techniques for flat set operations can be iteratively applied for hierarchical set operations. In addition, bilinear accumulators are extended to provide an extractable accumulation scheme comprising a primary bilinear accumulator and a secondary bilinear accumulator. The client receives (i) an encoding of an answer to the query, (ii) a verification comprising, for example, one or more of subset witnesses, completeness witnesses, and/or accumulation values, and (iii) at least one argument for at least one intersection operation, union operation and/or set difference operation.