GB2294140B - Data processing apparatus - Google Patents

Data processing apparatus

Info

Publication number
GB2294140B
GB2294140B GB9522945A GB9522945A GB2294140B GB 2294140 B GB2294140 B GB 2294140B GB 9522945 A GB9522945 A GB 9522945A GB 9522945 A GB9522945 A GB 9522945A GB 2294140 B GB2294140 B GB 2294140B
Authority
GB
United Kingdom
Prior art keywords
processing apparatus
data processing
data
processing
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
GB9522945A
Other versions
GB9522945D0 (en
GB2294140A (en
Inventor
Masato Tajima
Taro Shibagaki
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.)
Toshiba Corp
Original Assignee
Toshiba 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 JP4139425A external-priority patent/JPH05333776A/en
Priority claimed from JP13942492A external-priority patent/JPH05333772A/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority claimed from GB9311145A external-priority patent/GB2267419B/en
Publication of GB9522945D0 publication Critical patent/GB9522945D0/en
Publication of GB2294140A publication Critical patent/GB2294140A/en
Application granted granted Critical
Publication of GB2294140B publication Critical patent/GB2294140B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
    • 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
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04—Masking or blinding
    • H04L2209/046—Masking or blinding of operations, operands or results of the operations
    • 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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H04L2209/122—Hardware reduction or efficient architectures
    • 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
    • H04L2209/30—Compression, e.g. Merkle-Damgard construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Storage Device Security (AREA)
GB9522945A 1992-05-29 1993-05-28 Data processing apparatus Expired - Fee Related GB2294140B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4139425A JPH05333776A (en) 1992-05-29 1992-05-29 Function processing module
JP13942492A JPH05333772A (en) 1992-05-29 1992-05-29 Message data compressing device
GB9311145A GB2267419B (en) 1992-05-29 1993-05-28 Data processing apparatus

Publications (3)

Publication Number Publication Date
GB9522945D0 GB9522945D0 (en) 1996-01-10
GB2294140A GB2294140A (en) 1996-04-17
GB2294140B true GB2294140B (en) 1996-11-27

Family

ID=27266704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9522945A Expired - Fee Related GB2294140B (en) 1992-05-29 1993-05-28 Data processing apparatus

Country Status (1)

Country Link
GB (1) GB2294140B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6651102B2 (en) * 1995-12-20 2003-11-18 Nb Networks Systems and methods for general purpose data modification
AU1060999A (en) * 1997-09-16 1999-04-05 Information Resource Engineering, Inc. Cryptographic co-processor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162929A1 (en) * 1983-11-16 1985-12-04 Fujitsu Limited Method of controlling branching
EP0168054A2 (en) * 1984-07-11 1986-01-15 Hitachi, Ltd. Method and System for data driven information processing
GB2168508A (en) * 1984-11-16 1986-06-18 Hitachi Ltd Method for command processing in image processing system
GB2175112A (en) * 1983-05-07 1986-11-19 Hitachi Ltd Sequence control method and apparatus
EP0299711A2 (en) * 1987-07-14 1989-01-18 Mitsubishi Denki Kabushiki Kaisha An audio signal recording and reproducing apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175112A (en) * 1983-05-07 1986-11-19 Hitachi Ltd Sequence control method and apparatus
EP0162929A1 (en) * 1983-11-16 1985-12-04 Fujitsu Limited Method of controlling branching
EP0168054A2 (en) * 1984-07-11 1986-01-15 Hitachi, Ltd. Method and System for data driven information processing
GB2168508A (en) * 1984-11-16 1986-06-18 Hitachi Ltd Method for command processing in image processing system
EP0299711A2 (en) * 1987-07-14 1989-01-18 Mitsubishi Denki Kabushiki Kaisha An audio signal recording and reproducing apparatus

Also Published As

Publication number Publication date
GB9522945D0 (en) 1996-01-10
GB2294140A (en) 1996-04-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000528