Title:
CONFIDENTIAL DATA PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/148147
Kind Code:
A1
Abstract:
Encryption methods allowing encrypted data to be stored in a database and processed in the encrypted state have been proposed. However, since it is necessary for an application to use plaintext data, usage is only possible where security is assured. When an application for processing encrypted data stored in a database is used from a user system, the application is launched from the user system via an application extension unit. When the application processes the encrypted data stored in the database, the application extension unit performs a process in which, if an encryption SQL function enabling the data to be processed while remaining encrypted in a database system is registered, an SQL function for processing plaintext is replaced with the encryption SQL function, and, if a substitution process is registered, the SQL function is replaced with a substitution process function enabling the substitution process to be performed. It is thereby made possible to process data, without decryption, in a location at which security is not assured.
Inventors:
SUZUKI TAKAYUKI (JP)
KOJIMA GO (JP)
SATOU YOSHINORI (JP)
FUJIWARA KEISEI (JP)
KOJIMA GO (JP)
SATOU YOSHINORI (JP)
FUJIWARA KEISEI (JP)
Application Number:
PCT/JP2016/058178
Publication Date:
September 22, 2016
Filing Date:
March 15, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G06F21/62; G09C1/00
Domestic Patent References:
| WO2013069776A1 | 2013-05-16 | |||
| WO2014092180A1 | 2014-06-19 |
Foreign References:
| JP2013152512A | 2013-08-08 | |||
| JP2013026954A | 2013-02-04 |
Attorney, Agent or Firm:
WILLFORT INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Wil photograph international patent firm (JP)
Patent business corporation Wil photograph international patent firm (JP)
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