Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONFIDENTIAL INFORMATION MANAGEMENT SYSTEM, SERVER DEVICE, AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/045686
Kind Code:
A1
Abstract:
There is provided a confidential information management system capable of maintaining secrecy of data and effectively using a storage area. A server device contains first encrypted confidential data generated by encrypting confidential data by using an encryption key. Upon request from a terminal device, the server device decrypts the first encrypted confidential data by using a decryption key so as to generate confidential data. The server device further encrypts the generated confidential data by using a public key of a user so as to generate second encrypted confidential data, which is transmitted. The terminal device receives the second encrypted confidential data and decrypts the second encrypted confidential data by using a secret key of the user so as to generate confidential data.

Inventors:
OHNISHI YOSHIO
Application Number:
PCT/JP2004/016657
Publication Date:
May 19, 2005
Filing Date:
November 10, 2004
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
OHNISHI YOSHIO
International Classes:
G06F12/00; G06F12/14; G06F21/62; (IPC1-7): G06F12/14; G06F12/00; H04F9/08
Foreign References:
JP2001516913A2001-10-02
JPH09288609A1997-11-04
JP2003241956A2003-08-29
Other References:
NAKAYAMA T. ET AL.: "UNIX no dogubako 21 SSH", UNIX MAGAZINE, vol. 18, no. 7, 1 July 2003 (2003-07-01), pages 87 - 101, XP002988161
SUZAKI S. ET AL.: "Kigyo muke group ango system", THE INFORMATION PROCESSING SOCIETY OF JAPAN DAI 52 KAI (HEISEI 8 NEN ZENKI) ZENKOKU TAIKAI KOEN RONBUNSHU (4), 6 March 1996 (1996-03-06), pages 4-355 - 4-358, XP002988162
Attorney, Agent or Firm:
Nakajima, Shiro (2-1 Toyosaki 3-chome, Kita-k, Osaka-shi Osaka, JP)
Download PDF: