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JPS57202154A - Terminal device with encryption function - Google Patents

Terminal device with encryption function

Info

Publication number
JPS57202154A
JPS57202154A JP56087374A JP8737481A JPS57202154A JP S57202154 A JPS57202154 A JP S57202154A JP 56087374 A JP56087374 A JP 56087374A JP 8737481 A JP8737481 A JP 8737481A JP S57202154 A JPS57202154 A JP S57202154A
Authority
JP
Japan
Prior art keywords
circuit
code
encryption
reception
output
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
JP56087374A
Other languages
Japanese (ja)
Inventor
Yasuhiko Makiura
Toshiharu Naito
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56087374A priority Critical patent/JPS57202154A/en
Publication of JPS57202154A publication Critical patent/JPS57202154A/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
    • 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
    • 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
    • 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
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To obtan a terminal device which can make encryption with a simple constitution, through a reception terminal which discriminate information indicating a transmission station ahead the communication of encrypted information, reads out an encryption code stored in advance with a discrimination signal and encypts data. CONSTITUTION:A reception terminal receives and stored an individual code inducating a transmission station ahead the communication of encripted information at a reception circuit 1 and a series-parallel conversion circuit 2 and outputs decoded outputs C0-Cm according to the weight of a parallel code from a decoder circuit 3. A discriminator 4 connects a decode output to discrimination signals D0-D2, and if any of the outputs is effective, an output 13 is generated from a logical sum circuit 5 and a transmission circuit 6 is operationable. On the other hand, the signals D0-D2 generates a code corresponding to an encoding circuit 8, a read only memory 9 is accessed with the code, an encryption key designated and opened by the reception station registrated is read out as an output 14, and an encryptor 10 encrypts an encryptio objective data 15 with an encryption signal 14 and transmitted after parallel-series conversion.
JP56087374A 1981-06-05 1981-06-05 Terminal device with encryption function Pending JPS57202154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087374A JPS57202154A (en) 1981-06-05 1981-06-05 Terminal device with encryption function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087374A JPS57202154A (en) 1981-06-05 1981-06-05 Terminal device with encryption function

Publications (1)

Publication Number Publication Date
JPS57202154A true JPS57202154A (en) 1982-12-10

Family

ID=13913115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087374A Pending JPS57202154A (en) 1981-06-05 1981-06-05 Terminal device with encryption function

Country Status (1)

Country Link
JP (1) JPS57202154A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190145A (en) * 1982-04-30 1983-11-07 Fujitsu Ltd Cipher communication system
JPS59172845A (en) * 1983-03-22 1984-09-29 Nippon Telegr & Teleph Corp <Ntt> Simplified radio data communication system
JPS61205041A (en) * 1985-03-08 1986-09-11 Toshiba Corp Communication network system
JP2006505993A (en) * 2002-11-06 2006-02-16 インターナショナル・ビジネス・マシーンズ・コーポレーション Providing access code sets to user devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534520A (en) * 1978-08-31 1980-03-11 Fujitsu Ltd Encrypt data communication system containing multi- encrypt key

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534520A (en) * 1978-08-31 1980-03-11 Fujitsu Ltd Encrypt data communication system containing multi- encrypt key

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190145A (en) * 1982-04-30 1983-11-07 Fujitsu Ltd Cipher communication system
JPS59172845A (en) * 1983-03-22 1984-09-29 Nippon Telegr & Teleph Corp <Ntt> Simplified radio data communication system
JPH0430770B2 (en) * 1983-03-22 1992-05-22
JPS61205041A (en) * 1985-03-08 1986-09-11 Toshiba Corp Communication network system
JP2006505993A (en) * 2002-11-06 2006-02-16 インターナショナル・ビジネス・マシーンズ・コーポレーション Providing access code sets to user devices

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