JPS5523669A - Cryptographic communication system - Google Patents

Cryptographic communication system

Info

Publication number
JPS5523669A
JPS5523669A JP9696478A JP9696478A JPS5523669A JP S5523669 A JPS5523669 A JP S5523669A JP 9696478 A JP9696478 A JP 9696478A JP 9696478 A JP9696478 A JP 9696478A JP S5523669 A JPS5523669 A JP S5523669A
Authority
JP
Japan
Prior art keywords
data
circuit
reception
transmission
key word
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
JP9696478A
Other languages
Japanese (ja)
Inventor
Tetsuo Isayama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9696478A priority Critical patent/JPS5523669A/en
Publication of JPS5523669A publication Critical patent/JPS5523669A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0485—Networking architectures for enhanced packet encryption processing, e.g. offloading of IPsec packet processing or efficient security association look-up

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE: To prevent the peculation of data, by transmitting the transmission data in cryptography at the transmission side, transmitting the key word when no failure is detected with the monitor circuit, and interpreting the cryptographic data at the reception of the key word at the reception side.
CONSTITUTION: The transmission data is stored in the buffer 3 in the transmitter 1, this output data is into cryptography with the cryptographic circuit 4, and it is transmitted to the receiver via the transmission line 12. The receiver 2 stores the reception data in the reception buffer 9. On the other hand, at the transmission side, the monitor circuit 7 normally monitors the condition of transmission line, and when no failure on the transmission line is detected, the cryptographic data is delivered by taking no leakage of transmission data, and the key word is transmitted by starting the key word transmission circuit 5. At the reception side, the key word is received 11, it is given to the decoding circuit 10, and the cryptographic data is interpreted for the buffer 9. If a failure is detected with the circuit 7, clear indication signal is transmitted by starting the clear indication signal delivery circuit 6. At the reception circuit, this is received and it indicates the ineffectiveness of the reception data to the buffer 9.
COPYRIGHT: (C)1980,JPO&Japio
JP9696478A 1978-08-09 1978-08-09 Cryptographic communication system Pending JPS5523669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9696478A JPS5523669A (en) 1978-08-09 1978-08-09 Cryptographic communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9696478A JPS5523669A (en) 1978-08-09 1978-08-09 Cryptographic communication system

Publications (1)

Publication Number Publication Date
JPS5523669A true JPS5523669A (en) 1980-02-20

Family

ID=14178916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9696478A Pending JPS5523669A (en) 1978-08-09 1978-08-09 Cryptographic communication system

Country Status (1)

Country Link
JP (1) JPS5523669A (en)

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