JP7486688B2 - 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 - Google Patents

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 Download PDF

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Publication number
JP7486688B2
JP7486688B2 JP2024501718A JP2024501718A JP7486688B2 JP 7486688 B2 JP7486688 B2 JP 7486688B2 JP 2024501718 A JP2024501718 A JP 2024501718A JP 2024501718 A JP2024501718 A JP 2024501718A JP 7486688 B2 JP7486688 B2 JP 7486688B2
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key
ciphertext
common
auxiliary information
public key
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Japanese (ja)
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JPWO2023199435A1 (https=
Inventor
豊 川合
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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
    • H04L9/08—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
    • H04L9/06—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
    • 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
    • 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
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Device Security (AREA)
JP2024501718A 2022-04-13 2022-04-13 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 Active JP7486688B2 (ja)

Applications Claiming Priority (1)

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PCT/JP2022/017725 WO2023199435A1 (ja) 2022-04-13 2022-04-13 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

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JPWO2023199435A1 JPWO2023199435A1 (https=) 2023-10-19
JP7486688B2 true JP7486688B2 (ja) 2024-05-17

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Country Status (5)

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US (1) US20240421976A1 (https=)
JP (1) JP7486688B2 (https=)
CN (1) CN118947083A (https=)
DE (1) DE112022006626B4 (https=)
WO (1) WO2023199435A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008172736A (ja) 2006-12-14 2008-07-24 Ntt Data Corp 暗号文復号権委譲システム
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
WO2017141399A1 (ja) 2016-02-18 2017-08-24 株式会社日立製作所 データ処理システム
WO2019215818A1 (ja) 2018-05-08 2019-11-14 三菱電機株式会社 登録装置、サーバ装置、秘匿検索システム、秘匿検索方法、登録プログラムおよびサーバプログラム
JP6962629B1 (ja) 2021-03-23 2021-11-05 Ｅａｇｌｙｓ株式会社 データ共有システム、データ共有方法、およびデータ共有プログラム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265164A (en) 1991-10-31 1993-11-23 International Business Machines Corporation Cryptographic facility environment backup/restore and replication in a public key cryptosystem
DE60024941T8 (de) 1999-08-31 2006-08-10 Matsushita Electric Industrial Co., Ltd., Kadoma Verschlüsselungsverfahren und -Vorrichtung, Entschlüsselungsverfahren und -Vorrichtung
FR2836608A1 (fr) * 2002-02-25 2003-08-29 Thomson Licensing Sa Dispositif de traitement et procede de transmission de donnees chiffrees pour un premier domaine dans un reseau appartenant a un second domaine
CN113315745B (zh) * 2020-02-27 2026-01-09 华为云计算技术有限公司 一种数据处理方法、装置、设备及介质
JP7325689B2 (ja) * 2021-05-17 2023-08-14 三菱電機株式会社 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
JPWO2023127963A1 (https=) * 2021-12-28 2023-07-06
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008172736A (ja) 2006-12-14 2008-07-24 Ntt Data Corp 暗号文復号権委譲システム
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
WO2017141399A1 (ja) 2016-02-18 2017-08-24 株式会社日立製作所 データ処理システム
WO2019215818A1 (ja) 2018-05-08 2019-11-14 三菱電機株式会社 登録装置、サーバ装置、秘匿検索システム、秘匿検索方法、登録プログラムおよびサーバプログラム
JP6962629B1 (ja) 2021-03-23 2021-11-05 Ｅａｇｌｙｓ株式会社 データ共有システム、データ共有方法、およびデータ共有プログラム

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Publication number Publication date
JPWO2023199435A1 (https=) 2023-10-19
US20240421976A1 (en) 2024-12-19
WO2023199435A1 (ja) 2023-10-19
DE112022006626B4 (de) 2026-04-02
CN118947083A (zh) 2024-11-12
DE112022006626T5 (de) 2024-12-19

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