ES2699535T3 - Sistema de procesamiento de cifrado, dispositivo de generación de claves, dispositivo de cifrado, dispositivo de desciframiento, dispositivo de delegación de claves, método de procesamiento de cifrado y programa de procesamiento de cifrado - Google Patents

Sistema de procesamiento de cifrado, dispositivo de generación de claves, dispositivo de cifrado, dispositivo de desciframiento, dispositivo de delegación de claves, método de procesamiento de cifrado y programa de procesamiento de cifrado Download PDF

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Publication number
ES2699535T3
ES2699535T3 ES11858018T ES11858018T ES2699535T3 ES 2699535 T3 ES2699535 T3 ES 2699535T3 ES 11858018 T ES11858018 T ES 11858018T ES 11858018 T ES11858018 T ES 11858018T ES 2699535 T3 ES2699535 T3 ES 2699535T3
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ES
Spain
Prior art keywords
base
integer
vector
key
delegation
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
ES11858018T
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English (en)
Spanish (es)
Inventor
Katsuyuki Takashima
Tatsuaki Okamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
NTT Inc
Original Assignee
Mitsubishi Electric Corp
Nippon Telegraph and Telephone 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, Nippon Telegraph and Telephone Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of ES2699535T3 publication Critical patent/ES2699535T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • 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
    • H04L9/08—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
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H04L9/0833—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
    • H04L9/0836—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key using tree structure or hierarchical structure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • Storage Device Security (AREA)
ES11858018T 2011-02-09 2011-12-12 Sistema de procesamiento de cifrado, dispositivo de generación de claves, dispositivo de cifrado, dispositivo de desciframiento, dispositivo de delegación de claves, método de procesamiento de cifrado y programa de procesamiento de cifrado Active ES2699535T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011026216A JP5606351B2 (ja) 2011-02-09 2011-02-09 暗号処理システム、鍵生成装置、暗号化装置、復号装置、鍵委譲装置、暗号処理方法及び暗号処理プログラム
PCT/JP2011/078668 WO2012108100A1 (ja) 2011-02-09 2011-12-12 暗号処理システム、鍵生成装置、暗号化装置、復号装置、鍵委譲装置、暗号処理方法及び暗号処理プログラム

Publications (1)

Publication Number Publication Date
ES2699535T3 true ES2699535T3 (es) 2019-02-11

Family

ID=46638329

Family Applications (1)

Application Number Title Priority Date Filing Date
ES11858018T Active ES2699535T3 (es) 2011-02-09 2011-12-12 Sistema de procesamiento de cifrado, dispositivo de generación de claves, dispositivo de cifrado, dispositivo de desciframiento, dispositivo de delegación de claves, método de procesamiento de cifrado y programa de procesamiento de cifrado

Country Status (7)

Country Link
US (1) US9385867B2 (enExample)
EP (1) EP2675107B1 (enExample)
JP (1) JP5606351B2 (enExample)
KR (1) KR101432462B1 (enExample)
CN (1) CN103354984B (enExample)
ES (1) ES2699535T3 (enExample)
WO (1) WO2012108100A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2947641B1 (en) * 2013-01-16 2018-03-14 Mitsubishi Electric Corporation Information processing device, information processing method, and program
US10454673B2 (en) * 2014-12-05 2019-10-22 Mitsubishi Electric Corporation Cryptographic system, master key update apparatus, and non-transitory computer-readable recording medium storing master key update program
US20210173957A1 (en) * 2017-01-12 2021-06-10 Mitsubishi Electric Corporation Encrypted tag generation device, search query generation device, and searchable encryption system
JP6885325B2 (ja) * 2017-12-26 2021-06-16 日本電信電話株式会社 暗号化装置、復号装置、暗号化方法、復号方法、プログラム
JP6971917B2 (ja) * 2018-06-11 2021-11-24 三菱電機株式会社 復号装置、暗号化装置及び暗号システム
JP7233265B2 (ja) * 2019-03-15 2023-03-06 三菱電機株式会社 署名装置、検証装置、署名方法、検証方法、署名プログラム及び検証プログラム
US12099997B1 (en) 2020-01-31 2024-09-24 Steven Mark Hoffberg Tokenized fungible liabilities

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214698A (en) * 1991-03-20 1993-05-25 International Business Machines Corporation Method and apparatus for validating entry of cryptographic keys
US7349538B2 (en) * 2002-03-21 2008-03-25 Ntt Docomo Inc. Hierarchical identity-based encryption and signature schemes
WO2008099831A1 (ja) * 2007-02-13 2008-08-21 Nec Corporation 鍵生成装置、鍵導出装置、暗号化装置、復号化装置、方法、及び、プログラム
US20090080658A1 (en) * 2007-07-13 2009-03-26 Brent Waters Method and apparatus for encrypting data for fine-grained access control
US8422681B2 (en) * 2008-03-06 2013-04-16 International Business Machines Corporation Non-interactive hierarchical identity-based key-agreement
JP5349261B2 (ja) 2009-04-23 2013-11-20 三菱電機株式会社 暗号処理システム、鍵生成装置、鍵委譲装置、暗号化装置、復号装置、暗号処理方法及び暗号処理プログラム

Also Published As

Publication number Publication date
JP2012163917A (ja) 2012-08-30
JP5606351B2 (ja) 2014-10-15
CN103354984A (zh) 2013-10-16
EP2675107A4 (en) 2017-07-19
KR20130122678A (ko) 2013-11-07
KR101432462B1 (ko) 2014-08-20
US9385867B2 (en) 2016-07-05
US20130336474A1 (en) 2013-12-19
EP2675107B1 (en) 2018-10-24
EP2675107A1 (en) 2013-12-18
WO2012108100A1 (ja) 2012-08-16
CN103354984B (zh) 2015-11-25

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