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
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 (en) 2012-08-08 2013-08-08 Re-encryption key generation device, re-encryption device, encryption device, decryption device, and program

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 (en)
EP (1) EP2884690A4 (en)
JP (1) JP5932040B2 (en)
SG (1) SG11201500786UA (en)
WO (1) WO2014024956A1 (en)

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JP6341599B2 (en) * 2014-03-18 2018-06-13 国立研究開発法人情報通信研究機構 Encryption data update system and encryption data update method
JP6139804B2 (en) 2014-10-03 2017-05-31 株式会社東芝 Re-encryption key generation device, re-encryption device, encryption device, decryption device, and program
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
WO2018000317A1 (en) * 2016-06-30 2018-01-04 Nokia Technologies Oy Secure data processing
CN109314640B (en) * 2016-08-29 2021-11-12 Kddi株式会社 Vehicle information collection system, vehicle-mounted computer, vehicle information collection device, vehicle information collection method, and recording medium
US10097351B1 (en) 2016-09-15 2018-10-09 ISARA Corporation Generating a lattice basis for lattice-based cryptography
US9673977B1 (en) * 2016-09-15 2017-06-06 ISARA Corporation Refreshing public parameters in lattice-based cryptographic protocols
EP3618345B1 (en) 2017-06-09 2020-12-30 Mitsubishi Electric Corporation Re-encrypted key generation device, re-encryption device, re-encrypted cipher text decryption device and cryptosystem
CN111512592A (en) 2017-12-28 2020-08-07 三菱电机株式会社 Conversion key generation device, ciphertext conversion device, secret information processing system, conversion key generation method, conversion key generation program, ciphertext conversion method, and ciphertext conversion program
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
WO2020127433A1 (en) * 2018-12-21 2020-06-25 Inventio Ag Setting up a protected data communication connection between a controller of a passenger transport system and a mobile device
CN109802947A (en) * 2018-12-27 2019-05-24 石更箭数据科技(上海)有限公司 Data processing method, equipment and transaction system
CN109802948A (en) * 2018-12-27 2019-05-24 石更箭数据科技(上海)有限公司 Data processing equipment and transaction system
KR20240013292A (en) 2019-07-12 2024-01-30 에도패스, 엘엘씨 Data protection and recovery systems and methods
CN112184967A (en) * 2020-10-16 2021-01-05 云南电网有限责任公司丽江供电局 Unlocking method and system for power distribution net cage
CN112564907B (en) * 2021-03-01 2021-07-20 北京信安世纪科技股份有限公司 Key generation method and device, encryption method and device, and decryption method and device
WO2023081407A2 (en) * 2021-11-07 2023-05-11 Ntt Research, Inc. Cryptographic data message expansion for increasing adversarial storage requirements
CN114125831B (en) * 2022-01-25 2022-05-03 国网浙江省电力有限公司信息通信分公司 5G smart grid user side data acquisition method and system based on proxy re-encryption
CN115529194B (en) * 2022-11-28 2023-03-10 中国人民解放军国防科技大学 Data management method, system, equipment and storage medium

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ATE397337T1 (en) * 1999-12-21 2008-06-15 Contentguard Holdings Inc METHOD FOR TRANSFERRING POWER TO DECRYPT MESSAGES
US8094810B2 (en) * 2006-02-03 2012-01-10 Massachusetts Institute Of Technology Unidirectional proxy re-encryption
JP5135070B2 (en) * 2008-06-12 2013-01-30 株式会社エヌ・ティ・ティ・データ Ciphertext decryption authority delegation system
JP2010113181A (en) * 2008-11-07 2010-05-20 Hirokazu Ogi Key management method, key generation method, encryption processing method, decryption processing method, access control method, communication network system
JP2011055309A (en) * 2009-09-03 2011-03-17 National Institute Of Information & Communication Technology Id-based encryption method with double function and encryption system
WO2011045723A1 (en) * 2009-10-15 2011-04-21 Koninklijke Philips Electronics N.V. Ciphertext-policy attribute-based encryption and re-encryption
US9077690B2 (en) * 2009-12-07 2015-07-07 Nokia Corporation Preservation of user data privacy in a network
JP2012150378A (en) * 2011-01-21 2012-08-09 Nippon Telegr & Teleph Corp <Ntt> Proxy re-encryption system, key generation device, re-encryption device, proxy re-encryption method, and program
JP5562284B2 (en) * 2011-04-12 2014-07-30 日本電信電話株式会社 Re-encryption system, re-encryption device, capability providing device, re-encryption method, capability provision method, and program
SG194762A1 (en) * 2011-04-27 2013-12-30 Toshiba Kk Re-encryption key generator, re-encryption apparatus, and program
JP5454960B2 (en) * 2011-11-09 2014-03-26 株式会社東芝 Re-encryption system, re-encryption device, and program
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 (en) 2015-06-17
EP2884690A4 (en) 2016-03-09
WO2014024956A1 (en) 2014-02-13
JPWO2014024956A1 (en) 2016-07-25
US9819487B2 (en) 2017-11-14
JP5932040B2 (en) 2016-06-08
US20150180661A1 (en) 2015-06-25

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