CA2421142C - Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees - Google Patents

Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees Download PDF

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Publication number
CA2421142C
CA2421142C CA002421142A CA2421142A CA2421142C CA 2421142 C CA2421142 C CA 2421142C CA 002421142 A CA002421142 A CA 002421142A CA 2421142 A CA2421142 A CA 2421142A CA 2421142 C CA2421142 C CA 2421142C
Authority
CA
Canada
Prior art keywords
data
key
subkeys
function
transformation
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.)
Expired - Fee Related
Application number
CA002421142A
Other languages
English (en)
Other versions
CA2421142A1 (fr
Inventor
Masayuki Kanda
Youichi Takashima
Kazumaro Aoki
Hiroki Ueda
Kazuo Ohta
Tsutomu Matsumoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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
Priority claimed from JP10147479A external-priority patent/JP2934431B1/ja
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority claimed from CA002319135A external-priority patent/CA2319135C/fr
Publication of CA2421142A1 publication Critical patent/CA2421142A1/fr
Application granted granted Critical
Publication of CA2421142C publication Critical patent/CA2421142C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H04L9/06—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
    • H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Image Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
CA002421142A 1998-01-27 1999-01-27 Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees Expired - Fee Related CA2421142C (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP10/13572 1998-01-27
JP1357398 1998-01-27
JP1357298 1998-01-27
JP10/13573 1998-01-27
JP10147479A JP2934431B1 (ja) 1998-05-28 1998-05-28 暗号鍵スケジュール装置、およびそのプログラム記録媒体
JP10/147479 1998-05-28
CA002319135A CA2319135C (fr) 1998-01-27 1999-01-27 Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002319135A Division CA2319135C (fr) 1998-01-27 1999-01-27 Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees

Publications (2)

Publication Number Publication Date
CA2421142A1 CA2421142A1 (fr) 1999-07-29
CA2421142C true CA2421142C (fr) 2004-05-11

Family

ID=27427642

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002421142A Expired - Fee Related CA2421142C (fr) 1998-01-27 1999-01-27 Dispositif de transformation de donnees et support d'enregistrement sur lequel est enregistre un programme d'execution de transformation de donnees

Country Status (1)

Country Link
CA (1) CA2421142C (fr)

Also Published As

Publication number Publication date
CA2421142A1 (fr) 1999-07-29

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