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WO2008156107A1 - 電子データの暗号化及び暗号化データ復号化システム及びその方法 - Google Patents

電子データの暗号化及び暗号化データ復号化システム及びその方法 Download PDF

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Publication number
WO2008156107A1
WO2008156107A1 PCT/JP2008/061124 JP2008061124W WO2008156107A1 WO 2008156107 A1 WO2008156107 A1 WO 2008156107A1 JP 2008061124 W JP2008061124 W JP 2008061124W WO 2008156107 A1 WO2008156107 A1 WO 2008156107A1
Authority
WO
WIPO (PCT)
Prior art keywords
session key
key
generation means
generating
user
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/JP2008/061124
Other languages
English (en)
French (fr)
Inventor
Norikazu Kubotera
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP2009520507A priority Critical patent/JPWO2008156107A1/ja
Priority to US12/664,249 priority patent/US8369518B2/en
Publication of WO2008156107A1 publication Critical patent/WO2008156107A1/ja
Anticipated expiration legal-status Critical
Ceased 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
    • H04L9/0819—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)
    • H04L9/0825—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) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • 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
    • H04L9/3066—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
    • H04L9/3073—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Mathematical Physics (AREA)
  • Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Computing Systems (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Storage Device Security (AREA)

Abstract

　特権者秘密鍵ｘ及び特権者公開鍵ｘ・Ｐ（Ｐは生成者）を生成する特権者鍵生成手段と、セッション鍵Ｋを生成する第１セッション鍵生成手段と、第１セッション鍵生成手段により生成されたセッション鍵Ｋを用いて、暗号化データを復号化する第１復号化手段と、を備える特権者装置と、ユーザ秘密鍵ｒ、ユーザ公開鍵ｒ・Ｐ及び公開鍵ｒｘ・Ｐを生成するユーザ鍵生成手段と、セッション鍵Ｋを生成する第２セッション鍵生成手段と、第２セッション鍵生成手段により生成されたセッション鍵Ｋを用いて、暗号化データを復号化する第２復号化手段と、を備えるユーザ装置と、公開鍵ｒｘ・Ｐとセッション鍵生成情報ｓとランダム点Ｑを用いて、セッション鍵Ｋを生成する第３セッション鍵生成手段と、第３セッション鍵生成手段により生成されたセッション鍵Ｋを用いて、入力電子データを暗号化する手段と、を備える暗号データ生成装置と、を備える。
PCT/JP2008/061124 2007-06-18 2008-06-18 電子データの暗号化及び暗号化データ復号化システム及びその方法 Ceased WO2008156107A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009520507A JPWO2008156107A1 (ja) 2007-06-18 2008-06-18 電子データの暗号化及び暗号化データ復号化システム及びその方法
US12/664,249 US8369518B2 (en) 2007-06-18 2008-06-18 Electronic data encryption and encrypted data decryption system, and its method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007160193 2007-06-18
JP2007-160193 2007-06-18

Publications (1)

Publication Number Publication Date
WO2008156107A1 true WO2008156107A1 (ja) 2008-12-24

Family

ID=40156266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061124 Ceased WO2008156107A1 (ja) 2007-06-18 2008-06-18 電子データの暗号化及び暗号化データ復号化システム及びその方法

Country Status (3)

Country Link
US (1) US8369518B2 (ja)
JP (1) JPWO2008156107A1 (ja)
WO (1) WO2008156107A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10135613B2 (en) 2012-01-13 2018-11-20 Qualcomm Incorporated Method and apparatus for generating a privilege-based key
CN110709875B (zh) 2017-06-07 2024-10-29 区块链控股有限公司 在区块链网络中节点间建立可信点对点通信的方法和系统
CN112566113B (zh) * 2019-09-06 2023-04-07 阿里巴巴集团控股有限公司 密钥生成以及终端配网方法、装置、设备
US12407496B2 (en) * 2020-11-13 2025-09-02 Nippon Telegraph And Telephone Corporation Program execution system, data processing apparatus, program execution method and program

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3114991B2 (ja) * 1990-11-30 2000-12-04 株式会社東芝 データ通信システム
US7243232B2 (en) * 1995-04-21 2007-07-10 Certicom Corp. Key agreement and transport protocol
EP0856968A3 (en) * 1997-01-24 2000-12-06 Nec Corporation Encryption key processing system to be incorporated into data recovery system or key setting system for generating encryption key
JP3667988B2 (ja) 1997-06-06 2005-07-06 株式会社日立製作所 鍵回復方法および装置
US6775382B1 (en) 1997-06-30 2004-08-10 Sun Microsystems, Inc. Method and apparatus for recovering encryption session keys
JPH1185015A (ja) 1997-07-07 1999-03-30 Fujitsu Ltd 鍵回復システム
JPH11161167A (ja) 1997-11-28 1999-06-18 Pumpkin House:Kk 暗号化装置およびその方法ならびに暗号化プログラムを記録した記録媒体
JP3331327B2 (ja) 1998-12-09 2002-10-07 日本電信電話株式会社 鍵管理方法及びプログラム記録媒体
US7028180B1 (en) 2000-06-09 2006-04-11 Northrop Grumman Corporation System and method for usage of a role certificate in encryption and as a seal, digital stamp, and signature
JP2002217885A (ja) 2001-01-16 2002-08-02 Advanced Mobile Telecommunications Security Technology Research Lab Co Ltd キーエスクロー方式
JP2002252609A (ja) 2001-02-26 2002-09-06 Advanced Mobile Telecommunications Security Technology Research Lab Co Ltd キーエスクロー方式
US7499544B2 (en) 2003-11-03 2009-03-03 Microsoft Corporation Use of isogenies for design of cryptosystems
JP2006109244A (ja) 2004-10-07 2006-04-20 Eiji Okamoto 暗号鍵共有方法及び暗号鍵共有装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOUX A.: "A One Round Protocol for Tripartite Diffie-Hellman", LECTURE NOTES IN COMPUTER SCIENCE, 1838, SPRINGER, 24 July 2000 (2000-07-24), pages 385 - 393, XP008026749 *
LIHUA WANG ET AL.: "Multi-Keys Tripartite Key Agreement from Pairing", 2005 NEN SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY JIKKO IINKAI KIMUKYOKU, 25 January 2005 (2005-01-25), pages ABSTR. NO. 4F1-5 *

Also Published As

Publication number Publication date
JPWO2008156107A1 (ja) 2010-08-26
US20100195830A1 (en) 2010-08-05
US8369518B2 (en) 2013-02-05

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