Title:
A server apparatus, a search system, a terminal unit, a search method, a server program, and a terminal program
Document Type and Number:
Japanese Patent JP6234605
Kind Code:
B2
Abstract:
In a server apparatus, a data storage part stores a plurality of pieces of encrypted data. An index storage part stores, as an index I, a data structure which is for performing search with using a function H that outputs a unique numeric value in response to an inputted keyword, the data structure having a plurality of storage areas corresponding, in one-to-one relation, to numeric values outputted from the function H, and storing, for a plurality of keywords corresponding to plaintext data, an identifier of encrypted data being post-encryption data of the plaintext data to which each keyword corresponds, in a storage area corresponding to the numeric value outputted from the function H when each keyword is inputted. A search part inputs one of the plurality of keywords to the function H, identifies a storage area corresponding to the numeric value outputted from the function H, from the index I, and acquires encrypted data corresponding to the identifier stored in the identified storage area, from the data storage part.
Inventors:
Hirano Takato
Yutaka Kawai
Hattori Mitsuhiro
Takashi Ito
Matsuda Nori
Yutaka Kawai
Hattori Mitsuhiro
Takashi Ito
Matsuda Nori
Application Number:
JP2016554974A
Publication Date:
November 22, 2017
Filing Date:
October 21, 2014
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G06F17/30; G06F12/00; G09C1/00
Domestic Patent References:
| JP2013152520A | ||||
| JP5081102A | ||||
| JP2014174661A | ||||
| JP2014119486A | ||||
| JP2012123614A | ||||
| JP2012514244A |
Attorney, Agent or Firm:
Shoji Mizoi
Shingo Kitamura
Shingo Kitamura