IN2014CN04197A - - Google Patents

Info

Publication number
IN2014CN04197A
IN2014CN04197A IN4197CHN2014A IN2014CN04197A IN 2014CN04197 A IN2014CN04197 A IN 2014CN04197A IN 4197CHN2014 A IN4197CHN2014 A IN 4197CHN2014A IN 2014CN04197 A IN2014CN04197 A IN 2014CN04197A
Authority
IN
India
Prior art keywords
encrypted data
secret key
key
encryption
administration device
Prior art date
Application number
Other languages
English (en)
Inventor
Sachihiro Ichikawa
Nori Matsuda
Tadakazu Yamanaka
Katsuyuki Takashima
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of IN2014CN04197A publication Critical patent/IN2014CN04197A/en

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
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • 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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (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)
IN4197CHN2014 2011-12-20 2011-12-20 IN2014CN04197A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/079519 WO2013094018A1 (ja) 2011-12-20 2011-12-20 暗号化データ管理装置、暗号化データ管理方法及び暗号化データ管理プログラム

Publications (1)

Publication Number Publication Date
IN2014CN04197A true IN2014CN04197A (enrdf_load_stackoverflow) 2015-07-17

Family

ID=48667946

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4197CHN2014 IN2014CN04197A (enrdf_load_stackoverflow) 2011-12-20 2011-12-20

Country Status (6)

Country Link
US (1) US9237013B2 (enrdf_load_stackoverflow)
EP (1) EP2797254A4 (enrdf_load_stackoverflow)
JP (1) JP5668191B2 (enrdf_load_stackoverflow)
CN (1) CN104012028B (enrdf_load_stackoverflow)
IN (1) IN2014CN04197A (enrdf_load_stackoverflow)
WO (1) WO2013094018A1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023944B (zh) * 2011-09-27 2015-11-25 腾讯科技（深圳）有限公司 一种sns网络中推送关联用户的方法及系统
US10033711B2 (en) * 2013-07-18 2018-07-24 Nippon Telegraph And Telephone Corporation Directory service device, client device, key cloud system, method thereof, and program
EP3057262B1 (en) 2013-10-09 2021-07-28 Mitsubishi Electric Corporation Cipher system, encryption device, re-encryption key generation device, re-encryption device, and cipher program
WO2015087407A1 (ja) * 2013-12-11 2015-06-18 三菱電機株式会社 ファイル保管システム、ファイル保管装置及びユーザ端末
JP6049914B2 (ja) * 2014-01-16 2016-12-21 三菱電機株式会社 暗号システム、鍵生成装置及び再暗号化装置
WO2016056473A1 (ja) 2014-10-07 2016-04-14 日本電信電話株式会社 秘密計算システム、中継装置、それらの方法、プログラム、および記録媒体
WO2016132547A1 (ja) * 2015-02-20 2016-08-25 三菱電機株式会社 データ保管装置及びデータ更新システム及びデータ処理方法及びデータ処理プログラム
US10592682B2 (en) 2015-02-20 2020-03-17 Mitsubishi Electric Corporation Data storage apparatus, data processing method, and computer readable medium adding a user attribute of a revoked user to an embedded decryption condition while encrypted data remains in an encrypted state
US9811680B2 (en) 2015-06-04 2017-11-07 Microsoft Technology Licensing, Llc Secure storage and sharing of data by hybrid encryption using predefined schema
US11121868B2 (en) * 2016-07-06 2021-09-14 Nippon Telegraph And Telephone Corporation Secure computation system, secure computation device, secure computation method, and program
JP6575547B2 (ja) 2017-03-17 2019-09-18 富士ゼロックス株式会社 ドキュメント管理システム
US10666422B2 (en) * 2017-12-29 2020-05-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. Data processing method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1118184B1 (en) 1999-08-09 2005-12-14 Koninklijke Philips Electronics N.V. Updating a revocation list to foil an adversary
JP3833635B2 (ja) 2003-07-30 2006-10-18 三井住友海上火災保険株式会社 情報管理システム、キー配信サーバ、情報管理方法、及びプログラム
ES2496740T3 (es) * 2009-04-24 2014-09-19 Nippon Telegraph And Telephone Corporation Aparato de codificación, aparato de descodificación, método de codificación, método de descodificación, método y programa de seguridad y medio de almacenamiento
JP5285778B2 (ja) * 2009-08-03 2013-09-11 日本電信電話株式会社 関数暗号応用システム及び方法
EP2503533B1 (en) * 2009-11-20 2016-10-05 Mitsubishi Electric Corporation Cipher processing system, key generating device, key delegating device, encrypting device, decrypting device, cipher processing method and cipher processing program
EP2525339A4 (en) 2010-01-13 2013-09-11 Mitsubishi Electric Corp SECRET RECOVERY SYSTEM, PUBLIC PARAMETER GENERATION DEVICE, ENCRYPTION DEVICE, SECRET USER KEY GENERATION DEVICE, REQUEST TRANSMITTING DEVICE, RECOVERY DEVICE, COMPUTER PROGRAM, SECRET RECOVERY METHOD, GENERATION METHOD PUBLIC PARAMETER METHOD, ENCRYPTION METHOD, SECRET USER KEY GENERATION METHOD, REQUESTING METHOD FOR REQUESTING, AND RECOVERY METHOD
US8634563B2 (en) * 2010-12-17 2014-01-21 Microsoft Corporation Attribute based encryption using lattices
US8516244B2 (en) * 2011-06-10 2013-08-20 Zeutro Llc System, apparatus and method for decentralizing attribute-based encryption information

Also Published As

Publication number Publication date
US9237013B2 (en) 2016-01-12
EP2797254A1 (en) 2014-10-29
EP2797254A4 (en) 2015-10-28
US20140310521A1 (en) 2014-10-16
JP5668191B2 (ja) 2015-02-12
CN104012028A (zh) 2014-08-27
JPWO2013094018A1 (ja) 2015-04-27
CN104012028B (zh) 2016-10-26
WO2013094018A1 (ja) 2013-06-27

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