KEY SHARING SYSTEM, SHARED KEY CREATION DEVICE, AND SHARED KEY RESTORATION DEVICE

Details for Australian Patent Application No. 2003302545 (hide)

Owner MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventors YAMAMICHI, Masato; FUTA, Yuichi; OHMORI, Motoji; TATEBAYASHI, Makoto

Pub. Number AU-A-2003302545

PCT Number PCT/JP2003/0152

PCT Pub. Number WO2004/051921

Priority 2002-351062 03.12.02 JP; 2002-351063 03.12.02 JP

Filing date 28 November 2003

Wipo publication date 23 June 2004

International Classifications

H04L 009/08 Arrangements for secret or secure communication - Key distribution

G09C 001/00 Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system

Event Publications

22 July 2004 Complete Application Filed

  Priority application(s): 2002-351062 03.12.02 JP; 2002-351063 03.12.02 JP

29 July 2004 Application Open to Public Inspection

  Published as AU-A-2003302545

22 September 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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2003302544-KEY SHARING SYSTEM, SHARED KEY CREATION DEVICE, AND SHARED KEY RESTORATION DEVICE