Title:
DATABASE ENCRYPTION SYSTEM, METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2013/069776
Kind Code:
A1
Abstract:
Provided is a system for suppressing database information leakage, and improving processing efficiency. A user system (20) for connecting to a database system (10) via a network (30) is provided with means (23, 24) for managing key information for encryption and decryption, and a storage unit (25) for storing the safety setting information for data and/or metadata. The user system (20) is further provided with an application response means (22) for: determining whether encryption of a database operation command is necessary; selecting an encryption algorithm according to the data and/or metadata when encryption is necessary, transmitting the database operation command to a database control means (12) after encryption thereof, and executing the database (11) operation; transmitting the database operation command to the database control means (12) when encryption is not necessary, and executing the database operation; receiving a processing result transmitted by the database control means; executing the necessary decryption or conversion when decryption or conversion of the processing result data and/or metadata is necessary; and returning the processing result data and/or metadata as a response to the database operation command. The user system (20) is also provided with a safety setting means (26) for setting the safety information for data stored in the database.
Inventors:
MORI KENGO (JP)
OBANA SATOSHI (JP)
FURUKAWA JUN (JP)
TERANISHI ISAMU (JP)
ISSHIKI TOSHIYUKI (JP)
ARAKI TOSHINORI (JP)
OBANA SATOSHI (JP)
FURUKAWA JUN (JP)
TERANISHI ISAMU (JP)
ISSHIKI TOSHIYUKI (JP)
ARAKI TOSHINORI (JP)
Application Number:
PCT/JP2012/079149
Publication Date:
May 16, 2013
Filing Date:
November 09, 2012
Export Citation:
Assignee:
NEC CORP (JP)
MORI KENGO (JP)
OBANA SATOSHI (JP)
FURUKAWA JUN (JP)
TERANISHI ISAMU (JP)
ISSHIKI TOSHIYUKI (JP)
ARAKI TOSHINORI (JP)
MORI KENGO (JP)
OBANA SATOSHI (JP)
FURUKAWA JUN (JP)
TERANISHI ISAMU (JP)
ISSHIKI TOSHIYUKI (JP)
ARAKI TOSHINORI (JP)
International Classes:
G06F17/30; G06F12/00; G06F21/62; H04L9/14
Foreign References:
| JP2002169808A | 2002-06-14 | |||
| JP2003186725A | 2003-07-04 | |||
| JP2009099151A | 2009-05-07 | |||
| JP2009211384A | 2009-09-17 | |||
| JP2004528615A | 2004-09-16 | |||
| JP2005134990A | 2005-05-26 | |||
| JP2004234344A | 2004-08-19 |
Other References:
See also references of EP 2778951A4
"Fully Homomorphic Encryption Using Ideal Lattices", STOC'09, 31 May 2009 (2009-05-31), pages 169 - 178
"Fully Homomorphic Encryption Using Ideal Lattices", STOC'09, 31 May 2009 (2009-05-31), pages 169 - 178
Attorney, Agent or Firm:
KATO, Asamichi (JP)
Asamichi Kato (JP)
Asamichi Kato (JP)
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Claims: