JP2009118529A5 - - Google Patents

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Publication number
JP2009118529A5
JP2009118529A5 JP2009042235A JP2009042235A JP2009118529A5 JP 2009118529 A5 JP2009118529 A5 JP 2009118529A5 JP 2009042235 A JP2009042235 A JP 2009042235A JP 2009042235 A JP2009042235 A JP 2009042235A JP 2009118529 A5 JP2009118529 A5 JP 2009118529A5
Authority
JP
Japan
Prior art keywords
encryption key
lowest
geometric structure
individual encryption
hierarchical level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2009042235A
Other languages
English (en)
Japanese (ja)
Other versions
JP2009118529A (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2009042235A priority Critical patent/JP2009118529A/ja
Priority claimed from JP2009042235A external-priority patent/JP2009118529A/ja
Publication of JP2009118529A publication Critical patent/JP2009118529A/ja
Publication of JP2009118529A5 publication Critical patent/JP2009118529A5/ja
Pending legal-status Critical Current

Links

JP2009042235A 2009-02-25 2009-02-25 キー階層により保護されたシステムを安全保護する方法 Pending JP2009118529A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009042235A JP2009118529A (ja) 2009-02-25 2009-02-25 キー階層により保護されたシステムを安全保護する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009042235A JP2009118529A (ja) 2009-02-25 2009-02-25 キー階層により保護されたシステムを安全保護する方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2000526050A Division JP4351386B2 (ja) 1996-11-28 1997-12-18 キー階層により保護されたシステムを安全保護する方法

Publications (2)

Publication Number Publication Date
JP2009118529A JP2009118529A (ja) 2009-05-28
JP2009118529A5 true JP2009118529A5 (enExample) 2009-07-09

Family

ID=40785055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009042235A Pending JP2009118529A (ja) 2009-02-25 2009-02-25 キー階層により保護されたシステムを安全保護する方法

Country Status (1)

Country Link
JP (1) JP2009118529A (enExample)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501211A (nl) * 1985-04-29 1986-11-17 Philips Nv Systeem voor opslag en distributie van sleutels ten behoeve van cryptografisch beveiligde communicatie.
JPH01188133A (ja) * 1988-01-22 1989-07-27 Nippon Telegr & Teleph Corp <Ntt> 同報通信システム
JPH06259012A (ja) * 1993-03-05 1994-09-16 Hitachi Ltd 階層型鍵管理による暗号方法及び情報通信システム
DE19511298B4 (de) * 1995-03-28 2005-08-18 Deutsche Telekom Ag Verfahren zur Erteilung und zum Entzug der Berechtigung zum Empfang von Rundfunksendungen und Decoder
JPH0991133A (ja) * 1995-09-20 1997-04-04 Fujitsu Ltd 不正申告検出システム

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