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:
Feb. 21, 2017
Filed:
Feb. 24, 2016
Hitachi Solutions, Ltd., Tokyo, JP;
Minoru Fujimoto, Tokyo, JP;
Yoshiki Sameshima, Tokyo, JP;
Hitachi Solutions, Ltd., Tokyo, JP;
Abstract
A search system includes a storage device and a search server. The storage device stores an index database storing an index encrypted with an index key and the index key encrypted with a user key and associated with the encrypted index and stores a document database storing a document encrypted with a document key and the document key encrypted with the user key and associated with the encrypted document. The search server extracts a term for search from a requested search query, decrypts the encrypted index key with a user key which belongs to a user requesting the search query, encrypts the extracted term with the decrypted index key without storing the decrypted index key in a non-transitory storage device, searches the index database with the index encrypted using the encrypted first term, and sends a search result to a terminal.