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:
Jul. 31, 2018
Filed:
Jan. 29, 2014
Nec Europe Ltd., Heidelberg, DE;
Sebastian Gajek, Flensburg, DE;
Oezguer Dagdelen, Bensheim, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
A method for providing encrypted data for searching of information includes generating a number of distinct key triples each comprising a public key, a corresponding secret key, and a corresponding evaluation key based on searchable information and files to be searched. Information indicating whether the searchable information is included within the files is encrypted with a key of the generated key triples. The secret keys are merged to obtain a single secret key for an entirety of the searchable information within respective ones of the files for each of the files. The encrypted information is provided with the merged secret keys for each of the files as encrypted data for searching of information within the files. The generating of the distinct key triples and the encrypting of the information are performed based on a multikey homomorphic encryption scheme.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile