JP4199472B2 - 暗号化を施すことによりデータを保護するデータ保護システム - Google Patents

暗号化を施すことによりデータを保護するデータ保護システム Download PDF

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Publication number
JP4199472B2
JP4199472B2 JP2002089674A JP2002089674A JP4199472B2 JP 4199472 B2 JP4199472 B2 JP 4199472B2 JP 2002089674 A JP2002089674 A JP 2002089674A JP 2002089674 A JP2002089674 A JP 2002089674A JP 4199472 B2 JP4199472 B2 JP 4199472B2
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JP
Japan
Prior art keywords
terminal
decryption
key
decryption key
encryption
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.)
Expired - Lifetime
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JP2002089674A
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English (en)
Japanese (ja)
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JP2003169048A5 (enExample
JP2003169048A (ja
Inventor
稔久 中野
基司 大森
なつめ 松崎
誠 館林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2002089674A priority Critical patent/JP4199472B2/ja
Publication of JP2003169048A publication Critical patent/JP2003169048A/ja
Publication of JP2003169048A5 publication Critical patent/JP2003169048A5/ja
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Publication of JP4199472B2 publication Critical patent/JP4199472B2/ja
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Expired - Lifetime legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP2002089674A 2001-03-29 2002-03-27 暗号化を施すことによりデータを保護するデータ保護システム Expired - Lifetime JP4199472B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002089674A JP4199472B2 (ja) 2001-03-29 2002-03-27 暗号化を施すことによりデータを保護するデータ保護システム

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2001095730 2001-03-29
JP2001-95730 2001-03-29
JP2001285608 2001-09-19
JP2001-285608 2001-09-19
JP2002089674A JP4199472B2 (ja) 2001-03-29 2002-03-27 暗号化を施すことによりデータを保護するデータ保護システム

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2005107795A Division JP4170304B2 (ja) 2001-03-29 2005-04-04 暗号化を施すことによりデータを保護するデータ保護システム
JP2008169187A Division JP4870727B2 (ja) 2001-03-29 2008-06-27 暗号化を施すことによりデータを保護するデータ保護システム

Publications (3)

Publication Number Publication Date
JP2003169048A JP2003169048A (ja) 2003-06-13
JP2003169048A5 JP2003169048A5 (enExample) 2005-09-29
JP4199472B2 true JP4199472B2 (ja) 2008-12-17

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ID=27346396

Family Applications (1)

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JP2002089674A Expired - Lifetime JP4199472B2 (ja) 2001-03-29 2002-03-27 暗号化を施すことによりデータを保護するデータ保護システム

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JP (1) JP4199472B2 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7340603B2 (en) * 2002-01-30 2008-03-04 Sony Corporation Efficient revocation of receivers
JP2004120008A (ja) * 2002-09-20 2004-04-15 Pioneer Electronic Corp 鍵管理システム
MXPA05007498A (es) 2003-01-15 2005-09-21 Matsushita Electric Industrial Co Ltd Sistema de proteccion de contenido, aparato de generacion de datos clave y aparato terminal.
KR20060021851A (ko) 2003-05-22 2006-03-08 마츠시타 덴끼 산교 가부시키가이샤 저작권 보호시스템 및 거듭제곱 잉여연산장치 및 방법
JP4161859B2 (ja) 2003-09-11 2008-10-08 ソニー株式会社 情報処理装置、情報記録媒体、および情報処理方法、並びにコンピュータ・プログラム
EP1689115A1 (en) 2003-11-28 2006-08-09 Matsushita Electric Industries Co., Ltd. Management device, terminal device, and copyright protection system
JP2005333242A (ja) * 2004-05-18 2005-12-02 Pioneer Electronic Corp 鍵管理システム、及び再生装置
KR101092543B1 (ko) * 2004-11-12 2011-12-14 삼성전자주식회사 브로드캐스트 암호화를 위한 사용자 키 관리 방법
KR100717005B1 (ko) * 2005-04-06 2007-05-10 삼성전자주식회사 폐기 키를 결정하는 방법 및 장치와 이것을 이용하여복호화하는 방법 및 장치
KR100803596B1 (ko) * 2005-11-25 2008-02-19 삼성전자주식회사 폐기 메커니즘 상에서 외부 디바이스 또는 서비스를이용하는 복호화 방법 및 장치, 이를 위한 복호화 지원방법 및 장치
JP5051429B2 (ja) * 2006-11-14 2012-10-17 日本電気株式会社 暗号鍵管理方法、そのシステム及びそのプログラム
US20100290622A1 (en) * 2008-01-18 2010-11-18 Koninklijke Philips Electronics N.V. Wireless communication system and method for automatic node and key revocation

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Publication number Publication date
JP2003169048A (ja) 2003-06-13

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