JPS5684055A - Setting method for conversion code of code converter - Google Patents

Setting method for conversion code of code converter

Info

Publication number
JPS5684055A
JPS5684055A JP16211479A JP16211479A JPS5684055A JP S5684055 A JPS5684055 A JP S5684055A JP 16211479 A JP16211479 A JP 16211479A JP 16211479 A JP16211479 A JP 16211479A JP S5684055 A JPS5684055 A JP S5684055A
Authority
JP
Japan
Prior art keywords
contents
code
setting
counter
memory
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.)
Pending
Application number
JP16211479A
Other languages
Japanese (ja)
Inventor
Masayoshi Miyano
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.)
NIKO DENSHI KK
Original Assignee
NIKO DENSHI KK
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
Application filed by NIKO DENSHI KK filed Critical NIKO DENSHI KK
Priority to JP16211479A priority Critical patent/JPS5684055A/en
Publication of JPS5684055A publication Critical patent/JPS5684055A/en
Pending 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
    • 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
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE:To perform setting operation efficiently while eliminating the secret part of an encoder by storing a nonvolatile memory with random number strings and by setting them in random-number-string generators in response to indications. CONSTITUTION:A setting starting code, when inputted via gate 13, is judged by control circuit 10, which permits counter 11 to count up from zero to one. Magnetic bubble memory 17 stores random number strings in every address and when the contents of counter 11 do not show zero, the contents of the counter are used as an address to read memory contents, which are set in random-number-string generator 14a. Similarly, as setting start codes are inputted, the contents of memory 17 are set in 14b-14n successively. By set random number strings, code conversion part 16 encodes input signals.
JP16211479A 1979-12-13 1979-12-13 Setting method for conversion code of code converter Pending JPS5684055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16211479A JPS5684055A (en) 1979-12-13 1979-12-13 Setting method for conversion code of code converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16211479A JPS5684055A (en) 1979-12-13 1979-12-13 Setting method for conversion code of code converter

Publications (1)

Publication Number Publication Date
JPS5684055A true JPS5684055A (en) 1981-07-09

Family

ID=15748302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16211479A Pending JPS5684055A (en) 1979-12-13 1979-12-13 Setting method for conversion code of code converter

Country Status (1)

Country Link
JP (1) JPS5684055A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834454U (en) * 1981-08-27 1983-03-05 ニコ−電子株式会社 code conversion device
JPS6032454A (en) * 1983-08-03 1985-02-19 Nec Corp Simple privacy circuit of time division multiplex communication equipment
JP2005288377A (en) * 2004-04-02 2005-10-20 Konica Minolta Opto Inc Slot die, adjusting method for slot gap in slot die and manufacturing method for optical film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022363A (en) * 1973-06-30 1975-03-10
JPS5335303A (en) * 1976-09-13 1978-04-01 Mitsubishi Electric Corp Information transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022363A (en) * 1973-06-30 1975-03-10
JPS5335303A (en) * 1976-09-13 1978-04-01 Mitsubishi Electric Corp Information transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834454U (en) * 1981-08-27 1983-03-05 ニコ−電子株式会社 code conversion device
JPS6032454A (en) * 1983-08-03 1985-02-19 Nec Corp Simple privacy circuit of time division multiplex communication equipment
JPH0225572B2 (en) * 1983-08-03 1990-06-04 Nippon Electric Co
JP2005288377A (en) * 2004-04-02 2005-10-20 Konica Minolta Opto Inc Slot die, adjusting method for slot gap in slot die and manufacturing method for optical film

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