WO2008139652A1 - アクセス制御装置及びユーザ端末及びプログラム - Google Patents

アクセス制御装置及びユーザ端末及びプログラム Download PDF

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Publication number
WO2008139652A1
WO2008139652A1 PCT/JP2007/071536 JP2007071536W WO2008139652A1 WO 2008139652 A1 WO2008139652 A1 WO 2008139652A1 JP 2007071536 W JP2007071536 W JP 2007071536W WO 2008139652 A1 WO2008139652 A1 WO 2008139652A1
Authority
WO
WIPO (PCT)
Prior art keywords
signature
intraceability
key
random numbers
user agent
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.)
Ceased
Application number
PCT/JP2007/071536
Other languages
English (en)
French (fr)
Inventor
Kilho Shin
Hiroshi Yasuda
Terukatsu Aoki
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.)
University of Tokyo NUC
Original Assignee
University of Tokyo NUC
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 University of Tokyo NUC filed Critical University of Tokyo NUC
Publication of WO2008139652A1 publication Critical patent/WO2008139652A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)

Abstract

　追跡不能性と計算量の低減とを両立させ、ユビキタス計算環境において、実用的なアクセス制御を可能とすることである。 　公開鍵と個人鍵（署名鍵）が一対一に対応する通常の構成による高速な署名方式を利用しつつ、ユーザ・エージェント手段が署名を乱数化する作用を加えることより追跡不能性を実現している。認証の健全性を保証するために、選択メッセージ攻撃に対して偽造不能性を有する一般的な署名方式を採用する。また、ユーザ・エージェント手段によって乱数化された電子署名は、署名の検証式により定義される曲面上を一様に分布することから、署名であるという事実以外の情報を含み得ない。したがって、ユーザの行動について追跡することは不可能となる。
PCT/JP2007/071536 2007-04-27 2007-11-06 アクセス制御装置及びユーザ端末及びプログラム Ceased WO2008139652A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007118546A JP5114733B2 (ja) 2007-04-27 2007-04-27 アクセス制御装置及びユーザ端末及びプログラム
JP2007-118546 2007-04-27

Publications (1)

Publication Number Publication Date
WO2008139652A1 true WO2008139652A1 (ja) 2008-11-20

Family

ID=40001880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/071536 Ceased WO2008139652A1 (ja) 2007-04-27 2007-11-06 アクセス制御装置及びユーザ端末及びプログラム

Country Status (2)

Country Link
JP (1) JP5114733B2 (ja)
WO (1) WO2008139652A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105553672A (zh) * 2015-12-25 2016-05-04 北京握奇智能科技有限公司 一种电子签名方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003348081A (ja) * 2002-05-30 2003-12-05 Hideki Imai デジタル署名方法およびシステム
JP2004104172A (ja) * 2002-09-04 2004-04-02 Ntt Docomo Inc 電子署名の構造並びに署名付き情報の検証方法及びシステム
JP2007020060A (ja) * 2005-07-11 2007-01-25 Nippon Telegr & Teleph Corp <Ntt> 追跡機能を有する部分ブラインド署名方法及びシステム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003348081A (ja) * 2002-05-30 2003-12-05 Hideki Imai デジタル署名方法およびシステム
JP2004104172A (ja) * 2002-09-04 2004-04-02 Ntt Docomo Inc 電子署名の構造並びに署名付き情報の検証方法及びシステム
JP2007020060A (ja) * 2005-07-11 2007-01-25 Nippon Telegr & Teleph Corp <Ntt> 追跡機能を有する部分ブラインド署名方法及びシステム

Also Published As

Publication number Publication date
JP5114733B2 (ja) 2013-01-09
JP2008278144A (ja) 2008-11-13

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