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 (enExample)

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 (enExample) 2015-07-17

Family

ID=48667946

Family Applications (1)

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

Country Status (6)

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

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
EP3001346B1 (en) * 2013-07-18 2018-04-04 Nippon Telegraph and Telephone Corporation Directory service device, client device, key cloud system, method thereof, and program
JP6022073B2 (ja) 2013-10-09 2016-11-09 三菱電機株式会社 暗号システム、再暗号化鍵生成装置及び再暗号化装置
EP3082123B1 (en) * 2013-12-11 2019-07-03 Mitsubishi Electric Corporation File storage system, file storage apparatus, and user terminal
WO2015107641A1 (ja) * 2014-01-16 2015-07-23 三菱電機株式会社 暗号システム、鍵生成装置、再暗号化装置及びユーザ端末
EP3185234B1 (en) * 2014-10-07 2019-01-30 Nippon Telegraph and Telephone Corporation Secure computation system and relay device, and method, program, and recording medium thereof
CN107251480B (zh) * 2015-02-20 2018-07-10 三菱电机株式会社 数据保管装置、数据更新系统和数据处理方法
WO2016132546A1 (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処理方法及びデータ処理プログラム
US9811680B2 (en) 2015-06-04 2017-11-07 Microsoft Technology Licensing, Llc Secure storage and sharing of data by hybrid encryption using predefined schema
JP6534778B2 (ja) * 2016-07-06 2019-06-26 日本電信電話株式会社 秘密計算システム、秘密計算装置、秘密計算方法、およびプログラム
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
KR20010087366A (ko) 1999-08-09 2001-09-15 요트.게.아. 롤페즈 상대편을 저지하기 위한 취소목록의 업데이팅
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
KR101246241B1 (ko) * 2009-04-24 2013-03-22 니뽄 덴신 덴와 가부시키가이샤 암호화 장치, 복호장치, 암호화 방법, 복호방법, 세큐러티 방법, 프로그램 및 기록매체
CN102484586B (zh) * 2009-08-03 2014-12-03 日本电信电话株式会社 函数密码应用系统及方法
CN103038805B (zh) * 2009-11-20 2015-07-29 三菱电机株式会社 密码处理系统、密钥生成装置、密钥转让装置、加密装置、解密装置、密码处理方法以及密码处理程序
JP5269209B2 (ja) 2010-01-13 2013-08-21 三菱電機株式会社 秘匿検索システム及び公開パラメータ生成装置及び暗号化装置及びユーザ秘密鍵生成装置及びクエリ発行装置及び検索装置及びコンピュータプログラム及び秘匿検索方法及び公開パラメータ生成方法及び暗号化方法及びユーザ秘密鍵生成方法及びクエリ発行方法及び検索方法
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
WO2013094018A1 (ja) 2013-06-27
EP2797254A1 (en) 2014-10-29
CN104012028B (zh) 2016-10-26
US9237013B2 (en) 2016-01-12
JP5668191B2 (ja) 2015-02-12
US20140310521A1 (en) 2014-10-16
JPWO2013094018A1 (ja) 2015-04-27
EP2797254A4 (en) 2015-10-28
CN104012028A (zh) 2014-08-27

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