SG11201500786UA - Re-encryption key generator, re-encryption device, encryption device, decryption device, and program - Google Patents

Re-encryption key generator, re-encryption device, encryption device, decryption device, and program

Info

Publication number
SG11201500786UA
SG11201500786UA SG11201500786UA SG11201500786UA SG11201500786UA SG 11201500786U A SG11201500786U A SG 11201500786UA SG 11201500786U A SG11201500786U A SG 11201500786UA SG 11201500786U A SG11201500786U A SG 11201500786UA SG 11201500786U A SG11201500786U A SG 11201500786UA
Authority
SG
Singapore
Prior art keywords
encryption
program
key generator
decryption
encryption device
Prior art date
Application number
SG11201500786UA
Other languages
English (en)
Inventor
Yoshihiro Fujii
Koji Okada
Tatsuyuki Matsushita
Ryotaro Hayashi
Original Assignee
Toshiba Kk
Toshiba Solutions 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 Toshiba Kk, Toshiba Solutions Corp filed Critical Toshiba Kk
Publication of SG11201500786UA publication Critical patent/SG11201500786UA/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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
    • 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
    • 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
    • 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
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/76—Proxy, i.e. using intermediary entity to perform cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Storage Device Security (AREA)
SG11201500786UA 2012-08-08 2013-08-08 Re-encryption key generator, re-encryption device, encryption device, decryption device, and program SG11201500786UA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012175903 2012-08-08
JP2012176542 2012-08-08
PCT/JP2013/071468 WO2014024956A1 (ja) 2012-08-08 2013-08-08 再暗号化鍵生成装置、再暗号化装置、暗号化装置、復号装置及びプログラム

Publications (1)

Publication Number Publication Date
SG11201500786UA true SG11201500786UA (en) 2015-05-28

Family

ID=50068177

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201500786UA SG11201500786UA (en) 2012-08-08 2013-08-08 Re-encryption key generator, re-encryption device, encryption device, decryption device, and program

Country Status (5)

Country Link
US (1) US9819487B2 (de)
EP (1) EP2884690A4 (de)
JP (1) JP5932040B2 (de)
SG (1) SG11201500786UA (de)
WO (1) WO2014024956A1 (de)

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JP6341599B2 (ja) * 2014-03-18 2018-06-13 国立研究開発法人情報通信研究機構 暗号データ更新システム、暗号データ更新方法
JP6139804B2 (ja) * 2014-10-03 2017-05-31 株式会社東芝 再暗号化鍵生成装置、再暗号化装置、暗号化装置、復号装置及びプログラム
US10231123B2 (en) * 2015-12-07 2019-03-12 GM Global Technology Operations LLC Bluetooth low energy (BLE) communication between a mobile device and a vehicle
US20190229887A1 (en) * 2016-06-30 2019-07-25 Nokia Technologies Oy Secure data processing
EP3506553A4 (de) * 2016-08-29 2020-04-29 Kddi Corporation Fahrzeuginformationserfassungssystem, fahrzeugmontierter computer, vorrichtung zur erfassung von fahrzeuginformationen, verfahren zur erfassung von fahrzeuginformationen und computerprogramm
US9673977B1 (en) 2016-09-15 2017-06-06 ISARA Corporation Refreshing public parameters in lattice-based cryptographic protocols
US10097351B1 (en) 2016-09-15 2018-10-09 ISARA Corporation Generating a lattice basis for lattice-based cryptography
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
US11374742B2 (en) 2017-12-28 2022-06-28 Mitsubishi Electric Corporation Conversion key generation device, ciphertext conversion device, privacy-preserving information processing system, conversion key generation method, ciphertext conversion method, and computer
GB201806112D0 (en) * 2018-04-13 2018-05-30 Nchain Holdings Ltd Computer-implemented system and method
US11362824B2 (en) * 2018-05-25 2022-06-14 Intertrust Technologies Corporation Content management systems and methods using proxy reencryption
CN113228014A (zh) * 2018-12-21 2021-08-06 因温特奥股份公司 在人员运送设备的控制装置与移动设备之间建立受保护的数据通信连接
CN109802948A (zh) * 2018-12-27 2019-05-24 石更箭数据科技(上海)有限公司 数据处理设备及交易系统
CN109802947A (zh) * 2018-12-27 2019-05-24 石更箭数据科技(上海)有限公司 数据处理方法、设备及交易系统
CA3141024A1 (en) 2019-07-12 2021-01-21 Joshua Vedell Data protection and recovery systems and methods
CN112184967A (zh) * 2020-10-16 2021-01-05 云南电网有限责任公司丽江供电局 一种配电网箱开锁方法及系统
CN112564907B (zh) * 2021-03-01 2021-07-20 北京信安世纪科技股份有限公司 密钥生成方法及装置、加密方法及装置、解密方法及装置
WO2023081407A2 (en) * 2021-11-07 2023-05-11 Ntt Research, Inc. Cryptographic data message expansion for increasing adversarial storage requirements
CN114125831B (zh) * 2022-01-25 2022-05-03 国网浙江省电力有限公司信息通信分公司 基于代理重加密的5g智能电网用户侧数据获取方法及系统
CN115529194B (zh) * 2022-11-28 2023-03-10 中国人民解放军国防科技大学 一种数据管理方法、系统、设备和存储介质

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US8094810B2 (en) * 2006-02-03 2012-01-10 Massachusetts Institute Of Technology Unidirectional proxy re-encryption
JP5135070B2 (ja) * 2008-06-12 2013-01-30 株式会社エヌ・ティ・ティ・データ 暗号文復号権限委譲システム
JP2010113181A (ja) * 2008-11-07 2010-05-20 Hirokazu Ogi 鍵管理方法、鍵生成方法、暗号処理方法、復号処理方法、アクセス管理方法、通信ネットワークシステム
JP2011055309A (ja) * 2009-09-03 2011-03-17 National Institute Of Information & Communication Technology 二機能付きｉｄベース暗号化方法及び暗号システム
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JP2012150378A (ja) * 2011-01-21 2012-08-09 Nippon Telegr & Teleph Corp <Ntt> プロキシ再暗号化システム、鍵生成装置、再暗号化装置、プロキシ再暗号化方法、プログラム
JP5562284B2 (ja) * 2011-04-12 2014-07-30 日本電信電話株式会社 再暗号化システム、再暗号化装置、能力提供装置、再暗号化方法、能力提供方法、及びプログラム
JP5944893B2 (ja) * 2011-04-27 2016-07-05 株式会社東芝 再暗号化装置及びプログラム
JP5454960B2 (ja) * 2011-11-09 2014-03-26 株式会社東芝 再暗号化システム、再暗号化装置及びプログラム
US9252942B2 (en) * 2012-04-17 2016-02-02 Futurewei Technologies, Inc. Method and system for secure multiparty cloud computation

Also Published As

Publication number Publication date
EP2884690A1 (de) 2015-06-17
JP5932040B2 (ja) 2016-06-08
JPWO2014024956A1 (ja) 2016-07-25
EP2884690A4 (de) 2016-03-09
US20150180661A1 (en) 2015-06-25
WO2014024956A1 (ja) 2014-02-13
US9819487B2 (en) 2017-11-14

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