DE69736319D1 - Verahren zur Schlüsselverwaltung, Verschlüsselungssystem und verteiltes digitales Unterschriftssystem mit hierarchischem Aufbau - Google Patents

Verahren zur Schlüsselverwaltung, Verschlüsselungssystem und verteiltes digitales Unterschriftssystem mit hierarchischem Aufbau

Info

Publication number
DE69736319D1
DE69736319D1 DE69736319T DE69736319T DE69736319D1 DE 69736319 D1 DE69736319 D1 DE 69736319D1 DE 69736319 T DE69736319 T DE 69736319T DE 69736319 T DE69736319 T DE 69736319T DE 69736319 D1 DE69736319 D1 DE 69736319D1
Authority
DE
Germany
Prior art keywords
digital signature
hierarchical structure
key management
distributed digital
encryption system
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
DE69736319T
Other languages
English (en)
Other versions
DE69736319T2 (de
Inventor
Takayuki Nagashima
Keiichi Iwamura
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.)
Canon Inc
Original Assignee
Canon 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
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69736319D1 publication Critical patent/DE69736319D1/de
Application granted granted Critical
Publication of DE69736319T2 publication Critical patent/DE69736319T2/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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H04L9/0833—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
    • H04L9/0836—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key using tree structure or hierarchical structure
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3255—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using group based signatures, e.g. ring or threshold signatures

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
DE69736319T 1996-12-27 1997-12-24 Verahren zur Schlüsselverwaltung, Verschlüsselungssystem und verteiltes digitales Unterschriftssystem mit hierarchischem Aufbau Expired - Lifetime DE69736319T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP35156596 1996-12-27
JP8351565A JPH10198272A (ja) 1996-12-27 1996-12-27 階層を有する鍵管理方法及び暗号システム、分散デジタル署名システム

Publications (2)

Publication Number Publication Date
DE69736319D1 true DE69736319D1 (de) 2006-08-24
DE69736319T2 DE69736319T2 (de) 2007-07-05

Family

ID=18418144

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69736319T Expired - Lifetime DE69736319T2 (de) 1996-12-27 1997-12-24 Verahren zur Schlüsselverwaltung, Verschlüsselungssystem und verteiltes digitales Unterschriftssystem mit hierarchischem Aufbau

Country Status (4)

Country Link
US (1) US6088454A (de)
EP (1) EP0851629B1 (de)
JP (1) JPH10198272A (de)
DE (1) DE69736319T2 (de)

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US7072488B2 (en) * 2001-07-11 2006-07-04 Canon Kabushiki Kaisha Data processing method and apparatus
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GB0124670D0 (en) 2001-10-15 2001-12-05 Hewlett Packard Co Method and apparatus for encrypting data
GB0124686D0 (en) 2001-10-15 2001-12-05 Hewlett Packard Co A scheme for splitting trusted authorities based on the shamir's secret sharing
GB0124681D0 (en) 2001-10-15 2001-12-05 Hewlett Packard Co Method and apparatus for encrypting data
JP2003228631A (ja) * 2001-11-28 2003-08-15 Canon Inc 情報処理システム、情報処理装置、情報処理方法、プログラム及び記録媒体
JP2003259112A (ja) * 2001-12-25 2003-09-12 Canon Inc 透かし情報抽出装置及びその制御方法
JP3884955B2 (ja) * 2001-12-28 2007-02-21 キヤノン株式会社 画像検証システムおよび画像検証装置
US7787619B2 (en) * 2002-01-29 2010-08-31 Avaya Inc. Method and apparatus for secure key management using multi-threshold secret sharing
US7194630B2 (en) * 2002-02-27 2007-03-20 Canon Kabushiki Kaisha Information processing apparatus, information processing system, information processing method, storage medium and program
JP4072448B2 (ja) * 2002-03-14 2008-04-09 キヤノン株式会社 電子透かし抽出方法及び装置及びプログラム及び記憶媒体
US20030210803A1 (en) * 2002-03-29 2003-11-13 Canon Kabushiki Kaisha Image processing apparatus and method
JP2004023565A (ja) * 2002-06-18 2004-01-22 Canon Inc 電子透かし埋め込み装置、電子透かし抽出装置、及びそれらの方法
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JP2004297778A (ja) * 2003-03-07 2004-10-21 Canon Inc 画像データ暗号化方法及び装置、並びにコンピュータプログラム及びコンピュータ可読記憶媒体
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Also Published As

Publication number Publication date
JPH10198272A (ja) 1998-07-31
DE69736319T2 (de) 2007-07-05
EP0851629A3 (de) 1999-11-17
US6088454A (en) 2000-07-11
EP0851629B1 (de) 2006-07-12
EP0851629A2 (de) 1998-07-01

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