JP7486693B2 - 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
JP7486693B2
JP7486693B2 JP2024504811A JP2024504811A JP7486693B2 JP 7486693 B2 JP7486693 B2 JP 7486693B2 JP 2024504811 A JP2024504811 A JP 2024504811A JP 2024504811 A JP2024504811 A JP 2024504811A JP 7486693 B2 JP7486693 B2 JP 7486693B2
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Japan
Prior art keywords
key
ciphertext
encryption
common
conversion
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Japanese (ja)
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JPWO2023199436A5 (https=
JPWO2023199436A1 (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
    • H04L9/06—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
    • 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)
JP2024504811A 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 JP7486693B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/017726 WO2023199436A1 (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

Publications (3)

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JPWO2023199436A1 JPWO2023199436A1 (https=) 2023-10-19
JPWO2023199436A5 JPWO2023199436A5 (https=) 2024-03-25
JP7486693B2 true JP7486693B2 (ja) 2024-05-17

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JP2024504811A Active JP7486693B2 (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

Country Status (5)

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US (1) US20240421975A1 (https=)
JP (1) JP7486693B2 (https=)
CN (1) CN118923078A (https=)
DE (1) DE112022006624B4 (https=)
WO (1) WO2023199436A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023199435A1 (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

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1224909C (zh) 1998-10-16 2005-10-26 松下电器产业株式会社 数字作品保护系统
TW556111B (en) 1999-08-31 2003-10-01 Toshiba Corp Extended key generator, encryption/decryption unit, extended key generation method, and storage medium
US10581603B2 (en) * 2016-05-06 2020-03-03 ZeroDB, Inc. Method and system for secure delegated access to encrypted data in big data computing clusters
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
WO2023199435A1 (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

Also Published As

Publication number Publication date
DE112022006624B4 (de) 2026-04-02
CN118923078A (zh) 2024-11-08
WO2023199436A1 (ja) 2023-10-19
US20240421975A1 (en) 2024-12-19
DE112022006624T9 (de) 2025-04-10
DE112022006624T5 (de) 2024-12-05
JPWO2023199436A1 (https=) 2023-10-19

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