DE60039022D1 - Verfahren zur Übertragung der Befugnis, Nachrichten zu entschlüsseln - Google Patents

Verfahren zur Übertragung der Befugnis, Nachrichten zu entschlüsseln

Info

Publication number
DE60039022D1
DE60039022D1 DE60039022T DE60039022T DE60039022D1 DE 60039022 D1 DE60039022 D1 DE 60039022D1 DE 60039022 T DE60039022 T DE 60039022T DE 60039022 T DE60039022 T DE 60039022T DE 60039022 D1 DE60039022 D1 DE 60039022D1
Authority
DE
Germany
Prior art keywords
delegating
authority
procedure
decrypt messages
encoding
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
Application number
DE60039022T
Other languages
English (en)
Inventor
Xin Wang
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.)
Contentguard Holdings Inc
Original Assignee
Contentguard Holdings Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US09/468,703 external-priority patent/US7286665B1/en
Application filed by Contentguard Holdings Inc filed Critical Contentguard Holdings Inc
Application granted granted Critical
Publication of DE60039022D1 publication Critical patent/DE60039022D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3006—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters
    • H04L9/3013—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters involving the discrete logarithm problem, e.g. ElGamal or Diffie-Hellman systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/76—Proxy, i.e. using intermediary entity to perform cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Facsimile Transmission Control (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DE60039022T 1999-12-21 2000-10-05 Verfahren zur Übertragung der Befugnis, Nachrichten zu entschlüsseln Expired - Lifetime DE60039022D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/468,703 US7286665B1 (en) 1999-04-06 1999-12-21 System and method for transferring the right to decode messages

Publications (1)

Publication Number Publication Date
DE60039022D1 true DE60039022D1 (de) 2008-07-10

Family

ID=23860894

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60039022T Expired - Lifetime DE60039022D1 (de) 1999-12-21 2000-10-05 Verfahren zur Übertragung der Befugnis, Nachrichten zu entschlüsseln

Country Status (5)

Country Link
EP (1) EP1113617B1 (de)
JP (1) JP4010766B2 (de)
AT (1) ATE397337T1 (de)
DE (1) DE60039022D1 (de)
ES (1) ES2304929T3 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG103829A1 (en) * 2000-01-28 2004-05-26 Canon Kk Digital contents distribution system, digital contents distribution method, roaming server, information processor, and information processing method
US7082538B2 (en) 2000-10-03 2006-07-25 Omtool, Ltd. Electronically verified digital signature and document delivery system and method
US7170997B2 (en) 2000-12-07 2007-01-30 Cryptico A/S Method of generating pseudo-random numbers in an electronic device, and a method of encrypting and decrypting electronic data
DE60127681T2 (de) * 2001-10-19 2008-01-03 Sony Corp. System zum Inhaltsschutz und zur Kopierverwaltung für ein Netzwerk
JP3864249B2 (ja) 2002-06-04 2006-12-27 インターナショナル・ビジネス・マシーンズ・コーポレーション 暗号通信システム、その端末装置及びサーバ
JP4635009B2 (ja) 2003-05-21 2011-02-16 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． 通信における証明された秘密値の使用
US7895651B2 (en) 2005-07-29 2011-02-22 Bit 9, Inc. Content tracking in a network security system
US8984636B2 (en) 2005-07-29 2015-03-17 Bit9, Inc. Content extractor and analysis system
US8272058B2 (en) 2005-07-29 2012-09-18 Bit 9, Inc. Centralized timed analysis in a network security system
JP5446453B2 (ja) * 2009-04-30 2014-03-19 ソニー株式会社 情報処理装置、電子署名生成システム、電子署名用の鍵生成方法、情報処理方法、及びプログラム
JP5361920B2 (ja) * 2011-02-16 2013-12-04 株式会社東芝 ファイルサーバシステム
JP5377540B2 (ja) * 2011-02-17 2013-12-25 株式会社東芝 鍵管理システム
WO2012147869A1 (ja) * 2011-04-27 2012-11-01 株式会社 東芝 再暗号化鍵生成装置、再暗号化装置及びプログラム
JP5494603B2 (ja) * 2011-09-29 2014-05-21 沖電気工業株式会社 セキュリティ処理代行システム
US9647835B2 (en) * 2011-12-16 2017-05-09 Akamai Technologies, Inc. Terminating SSL connections without locally-accessible private keys
JP5389212B2 (ja) 2012-03-28 2014-01-15 株式会社東芝 再暗号文検証プログラム、再暗号化装置及び再暗号化システム
JP6019453B2 (ja) 2012-07-05 2016-11-02 株式会社クリプト・ベーシック 暗号化装置、復号化装置、及びプログラム
SG11201500786UA (en) * 2012-08-08 2015-05-28 Toshiba Kk Re-encryption key generator, re-encryption device, encryption device, decryption device, and program
DE102012017826A1 (de) * 2012-09-10 2014-03-13 Giesecke & Devrient Gmbh Verfahren zur Erstellung einer abgeleiteten Instanz eines Originaldatenträgers

Also Published As

Publication number Publication date
EP1113617A2 (de) 2001-07-04
ES2304929T3 (es) 2008-11-01
JP2001202010A (ja) 2001-07-27
EP1113617B1 (de) 2008-05-28
ATE397337T1 (de) 2008-06-15
EP1113617A3 (de) 2003-08-27
JP4010766B2 (ja) 2007-11-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition