Title:
コンテンツを放送する安全なシステムにおいて準拠しない鍵、機器、又はモジュールの失効リストを更新する方法
Document Type and Number:
Japanese Patent JP4478456
Kind Code:
B2
Abstract:
The process consists in receiving in a reception device a content from a content provider to which is attached a unique identifier of most recent revocation list, the revocation list containing identifiers of keys, of appliances or of modules regarded as noncompliant by a trusted third party. The revocation list identifier received is compared with a revocation list identifier stored in the reception device and, in case of difference between the identifiers: one downloads the most recent revocation list to the said reception device; or one awaits the reception of the most recent revocation list with a next content. The invention also relates to a process for presenting a content received according to the above process.
Inventors:
Diel, Erik
Duran, Alain
Duran, Alain
Application Number:
JP2003557206A
Publication Date:
June 09, 2010
Filing Date:
December 20, 2002
Export Citation:
Assignee:
Thomson Licensing
International Classes:
H04L9/08; H04N7/16; H04N7/167; H04N5/775; H04N5/913
Domestic Patent References:
| JP10282883A | ||||
| JP11205305A | ||||
| JP2001084267A | ||||
| JP2001117880A | ||||
| JP2004502211A |
Other References:
菊池浩明,安部謙介,中西祥八郎,“2分ハッシュ木を用いた証明書廃止・更新システム”,情報処理学会研究報告(98-DPS-90,98-CSEC-2),日本,社団法人情報処理学会,1998年 9月18日,Vol.98 ,No.84,p.51-56
今枝直彦,村田祐一,竹内宏典,“CA連携実現における課題およびその解決方策”,情報処理学会研究報告(2000-DPS-97,2000-CSEC-8),日本,社団法人情報処理学会,2000年 3月22日,Vol.2000,No.30 ,p.31-36
Moni Naor and Kobbi Nissim,“Certificate Revocation and Certificate Update”,IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,2000年 4月,VOLUME18, NUMBER4,p.561-570,A PUBLICATION OD THE IEEE COMMUNICATIONS SOCIETY
今枝直彦,村田祐一,竹内宏典,“CA連携実現における課題およびその解決方策”,情報処理学会研究報告(2000-DPS-97,2000-CSEC-8),日本,社団法人情報処理学会,2000年 3月22日,Vol.2000,No.30 ,p.31-36
Moni Naor and Kobbi Nissim,“Certificate Revocation and Certificate Update”,IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,2000年 4月,VOLUME18, NUMBER4,p.561-570,A PUBLICATION OD THE IEEE COMMUNICATIONS SOCIETY
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito