DE112021007337B4 - Chiffretext-umwandlungssystem, umwandlungsschlüssel- erzeugungsverfahren und umwandlungsschlüssel-erzeugungsprogramm - Google Patents

Chiffretext-umwandlungssystem, umwandlungsschlüssel- erzeugungsverfahren und umwandlungsschlüssel-erzeugungsprogramm Download PDF

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Publication number
DE112021007337B4
DE112021007337B4 DE112021007337.0T DE112021007337T DE112021007337B4 DE 112021007337 B4 DE112021007337 B4 DE 112021007337B4 DE 112021007337 T DE112021007337 T DE 112021007337T DE 112021007337 B4 DE112021007337 B4 DE 112021007337B4
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key
common
ciphertext
conversion
attribute
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DE112021007337.0T
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German (de)
English (en)
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DE112021007337T5 (de
Inventor
Yutaka Kawai
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • 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
    • 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
    • H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
    • H04L9/16—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms the keys or algorithms being changed during operation
    • 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
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0637—Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
    • 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
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H04L9/0847—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving identity based encryption [IBE] schemes

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Storage Device Security (AREA)
DE112021007337.0T 2021-05-17 2021-05-17 Chiffretext-umwandlungssystem, umwandlungsschlüssel- erzeugungsverfahren und umwandlungsschlüssel-erzeugungsprogramm Active DE112021007337B4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/018664 WO2022244079A1 (ja) 2021-05-17 2021-05-17 暗号文変換システム、変換鍵生成方法、及び、変換鍵生成プログラム

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DE112021007337T5 DE112021007337T5 (de) 2024-01-11
DE112021007337B4 true DE112021007337B4 (de) 2025-04-24

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DE112021007337.0T Active DE112021007337B4 (de) 2021-05-17 2021-05-17 Chiffretext-umwandlungssystem, umwandlungsschlüssel- erzeugungsverfahren und umwandlungsschlüssel-erzeugungsprogramm

Country Status (5)

Country Link
US (1) US20240048377A1 (https=)
JP (1) JP7325689B2 (https=)
CN (1) CN117242740A (https=)
DE (1) DE112021007337B4 (https=)
WO (1) WO2022244079A1 (https=)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023199435A1 (ja) 2022-04-13 2023-10-19 三菱電機株式会社 暗号文変換システム、暗号文変換方法、及び暗号文変換プログラム
WO2023199436A1 (ja) 2022-04-13 2023-10-19 三菱電機株式会社 暗号文変換システム、暗号文変換方法、及び暗号文変換プログラム
US12476945B2 (en) * 2022-12-28 2025-11-18 Crypto Lab Inc. Electronic device for performing evaluation of encrypted messages and methods thereof
CN116720537B (zh) * 2023-08-10 2023-10-10 天津环球磁卡科技有限公司 一种公交卡数据的读取方法及读取系统
CN119135399B (zh) * 2024-08-30 2025-12-16 蚂蚁区块链科技(上海)有限公司 一种数据共享方法、装置和系统

Citations (3)

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US20180254901A1 (en) * 2016-05-06 2018-09-06 ZeroDB, Inc. Method and system for secure delegated access to encrypted data in big data computing clusters
WO2018225248A1 (ja) * 2017-06-09 2018-12-13 三菱電機株式会社 再暗号化鍵生成装置、再暗号化装置、再暗号化暗号文復号装置及び暗号システム
JP6867718B1 (ja) * 2020-02-20 2021-05-12 Ｅａｇｌｙｓ株式会社 情報処理システム、情報処理装置、情報処理方法、および、情報処理プログラム

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CN100483992C (zh) * 2003-05-06 2009-04-29 国际商业机器公司 数据流的加密、解密方法和装置
US8996863B2 (en) * 2010-12-03 2015-03-31 Yacov Yacobi Attribute-based access-controlled data-storage system
US8635464B2 (en) * 2010-12-03 2014-01-21 Yacov Yacobi Attribute-based access-controlled data-storage system
US8862902B2 (en) * 2011-04-29 2014-10-14 Seagate Technology Llc Cascaded data encryption dependent on attributes of physical memory
CN104871477B (zh) * 2013-01-16 2018-07-10 三菱电机株式会社 加密系统、重加密密钥生成装置、重加密装置、加密方法
EP2947640B1 (en) * 2013-01-18 2017-08-02 Mitsubishi Electric Corporation Data decryption device, attribute-based encryption system, random number element removing device, data decryption method, and data decryption programm.
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
EP3238368B1 (en) * 2014-12-23 2020-09-02 Nokia Technologies Oy Method and apparatus for duplicated data management in cloud computing
JP2016189527A (ja) 2015-03-30 2016-11-04 三菱電機株式会社 情報処理装置及び情報処理システム及び情報処理方法及び情報処理プログラム
CN108989037A (zh) * 2018-08-31 2018-12-11 深圳市元征科技股份有限公司 一种多授权属性基加密方法、系统、设备及计算机介质
WO2020112210A2 (en) * 2018-09-14 2020-06-04 SeaPort, Inc. Methods and systems for customized encoding and decoding communications
US11310041B2 (en) * 2019-04-05 2022-04-19 Arizona Board Of Regents On Behalf Of Arizona State University Method and apparatus for achieving fine-grained access control with discretionary user revocation over cloud data
JP7317603B2 (ja) * 2019-07-09 2023-07-31 キヤノン株式会社 画像処理装置、システム、サーバー、制御方法及びプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180254901A1 (en) * 2016-05-06 2018-09-06 ZeroDB, Inc. Method and system for secure delegated access to encrypted data in big data computing clusters
WO2018225248A1 (ja) * 2017-06-09 2018-12-13 三菱電機株式会社 再暗号化鍵生成装置、再暗号化装置、再暗号化暗号文復号装置及び暗号システム
JP6867718B1 (ja) * 2020-02-20 2021-05-12 Ｅａｇｌｙｓ株式会社 情報処理システム、情報処理装置、情報処理方法、および、情報処理プログラム

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Publication number Publication date
WO2022244079A1 (ja) 2022-11-24
US20240048377A1 (en) 2024-02-08
JP7325689B2 (ja) 2023-08-14
DE112021007337T5 (de) 2024-01-11
JPWO2022244079A1 (https=) 2022-11-24
CN117242740A (zh) 2023-12-15

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