JP7248120B2 - 暗号システム、鍵生成装置、暗号化装置、復号装置、及びプログラム - Google Patents

暗号システム、鍵生成装置、暗号化装置、復号装置、及びプログラム Download PDF

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Publication number
JP7248120B2
JP7248120B2 JP2021530426A JP2021530426A JP7248120B2 JP 7248120 B2 JP7248120 B2 JP 7248120B2 JP 2021530426 A JP2021530426 A JP 2021530426A JP 2021530426 A JP2021530426 A JP 2021530426A JP 7248120 B2 JP7248120 B2 JP 7248120B2
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key
policy
attribute
ciphertext
encryption
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Japanese (ja)
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JPWO2021005748A1 (enExample
Inventor
潤一 富田
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NTT Inc
NTT Inc USA
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Nippon Telegraph and Telephone Corp
NTT Inc USA
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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
    • H04L9/08—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)
    • H04L9/0825—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) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • 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

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  • 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)
JP2021530426A 2019-07-10 2019-07-10 暗号システム、鍵生成装置、暗号化装置、復号装置、及びプログラム Active JP7248120B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023039565A JP7586210B2 (ja) 2019-07-10 2023-03-14 暗号システム、鍵生成装置、暗号化装置、復号装置、方法及びプログラム

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PCT/JP2019/027330 WO2021005748A1 (ja) 2019-07-10 2019-07-10 暗号システム、鍵生成装置、暗号化装置、復号装置、方法及びプログラム

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JP2023039565A Division JP7586210B2 (ja) 2019-07-10 2023-03-14 暗号システム、鍵生成装置、暗号化装置、復号装置、方法及びプログラム

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JPWO2021005748A1 JPWO2021005748A1 (enExample) 2021-01-14
JP7248120B2 true JP7248120B2 (ja) 2023-03-29

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JP2023039565A Active JP7586210B2 (ja) 2019-07-10 2023-03-14 暗号システム、鍵生成装置、暗号化装置、復号装置、方法及びプログラム

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US (1) US20220376901A1 (enExample)
JP (2) JP7248120B2 (enExample)
WO (1) WO2021005748A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2015374190A1 (en) 2014-12-29 2017-07-13 Herman Miller, Inc. System architecture for office productivity structure communications
CN113055164A (zh) * 2021-03-11 2021-06-29 苏州同济区块链研究院有限公司 一种基于国密的密文策略属性加密算法
CN113055168B (zh) * 2021-03-29 2022-06-24 陕西师范大学 支持策略隐藏和属性更新的密文策略属性加密方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015125293A1 (ja) 2014-02-24 2015-08-27 三菱電機株式会社 暗号システム及び暗号プログラム
US20160014095A1 (en) 2014-07-14 2016-01-14 William Timothy Strayer Policy-based access control in content networks

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5852551B2 (ja) 2012-11-12 2016-02-03 日本電信電話株式会社 関数型暗号システム、鍵生成装置、暗号化装置、復号装置、関数型暗号方法、およびプログラム
US8559631B1 (en) * 2013-02-09 2013-10-15 Zeutro Llc Systems and methods for efficient decryption of attribute-based encryption
US9705850B2 (en) * 2013-03-15 2017-07-11 Arizona Board Of Regents On Behalf Of Arizona State University Enabling comparable data access control for lightweight mobile devices in clouds
US20160241399A1 (en) * 2013-03-15 2016-08-18 Arizona Board Of Regents On Behalf Of Arizona State University Efficient Privacy-Preserving Ciphertext-Policy Attribute Based Encryption and Broadcast Encryption
JP6384149B2 (ja) * 2014-07-01 2018-09-05 日本放送協会 鍵生成装置、暗号化装置、復号装置およびそれらのプログラム、ならびに、個人情報保護システム
WO2019214942A1 (en) * 2018-05-10 2019-11-14 Telecom Italia S.P.A. Protecting signaling messages in hop-by-hop network communication link

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015125293A1 (ja) 2014-02-24 2015-08-27 三菱電機株式会社 暗号システム及び暗号プログラム
US20160014095A1 (en) 2014-07-14 2016-01-14 William Timothy Strayer Policy-based access control in content networks

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
市川 幸宏 ほか，関数型暗号アプリケーションにおける適切な述語付与方式の検討，情報処理学会研究報告 ２０１２（平成２４）年度▲６▼ ［ＤＶＤ－ＲＯＭ］，日本，一般社団法人情報処理学会，2013年04月15日，Vol.2013-DPS-15 No.5，p. 1-6
石橋 拓哉 ほか，属性ベース暗号を用いたファイル共有サービスの複数組織対応に関する考察，電子情報通信学会技術研究報告，日本，一般社団法人電子情報通信学会，2018年02月26日，Vol.117 No.471，p.79-84

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JPWO2021005748A1 (enExample) 2021-01-14
WO2021005748A1 (ja) 2021-01-14
JP7586210B2 (ja) 2024-11-19
US20220376901A1 (en) 2022-11-24
JP2023063430A (ja) 2023-05-09

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