JPS57207453A - Managing system for key for encryption communication - Google Patents

Managing system for key for encryption communication

Info

Publication number
JPS57207453A
JPS57207453A JP56092467A JP9246781A JPS57207453A JP S57207453 A JPS57207453 A JP S57207453A JP 56092467 A JP56092467 A JP 56092467A JP 9246781 A JP9246781 A JP 9246781A JP S57207453 A JPS57207453 A JP S57207453A
Authority
JP
Japan
Prior art keywords
key
encryption
cdc
message
communication
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
JP56092467A
Other languages
Japanese (ja)
Inventor
Atsushi Yamashita
Ryota Akiyama
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 JP56092467A priority Critical patent/JPS57207453A/en
Publication of JPS57207453A publication Critical patent/JPS57207453A/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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords

Landscapes

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

Abstract

PURPOSE:To avoid a wiretapper from obtaining a hold to decription by dividing a secret key into two, using one for normal encryption communication and the other for a check pattern to the propriety of the secret key. CONSTITUTION:Transmission and reception parties operate X and Y respectively and obtain the value of a common key through the exchange of the value of operation. As to the common key K, the A side divides the key K1 into a test pattern and an encryption part and applies the test pattern part to an encryptor part CDC via a switch SW1 for encryption. An encripted signal reaches the reception party B via a transmission line TL. The reception party B uses the encryption key part of the common key K2 at a decryptor CDC and decrypts the signal and transmits it to a comparator to confirm the keys K1 and K2 equal with each other. From the A side, a communication message from a decryption signal source CL is inputted to the encryptor CDC and the message is transmitted to the B side, where the message can correctly be decrypted. In this case, even if the wiretapper WTP listens in the communication, no hold can be given for the decryption.
JP56092467A 1981-06-16 1981-06-16 Managing system for key for encryption communication Pending JPS57207453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56092467A JPS57207453A (en) 1981-06-16 1981-06-16 Managing system for key for encryption communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56092467A JPS57207453A (en) 1981-06-16 1981-06-16 Managing system for key for encryption communication

Publications (1)

Publication Number Publication Date
JPS57207453A true JPS57207453A (en) 1982-12-20

Family

ID=14055141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56092467A Pending JPS57207453A (en) 1981-06-16 1981-06-16 Managing system for key for encryption communication

Country Status (1)

Country Link
JP (1) JPS57207453A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165543A (en) * 1983-03-09 1984-09-18 Fujitsu Ltd Key distribution system of cipher device
JPS60105338A (en) * 1983-11-12 1985-06-10 Fujitsu Ltd Line ciphering device
EP0148015A2 (en) * 1983-12-30 1985-07-10 S. P. Radio A/S A method for cryptographic transmission of speech signals and a communication station for performing the method
JP2010539519A (en) * 2006-09-29 2010-12-16 シーメンス アクチエンゲゼルシヤフト Method for exchanging encrypted data and communication system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165543A (en) * 1983-03-09 1984-09-18 Fujitsu Ltd Key distribution system of cipher device
JPH0456504B2 (en) * 1983-03-09 1992-09-08 Fujitsu Ltd
JPS60105338A (en) * 1983-11-12 1985-06-10 Fujitsu Ltd Line ciphering device
EP0148015A2 (en) * 1983-12-30 1985-07-10 S. P. Radio A/S A method for cryptographic transmission of speech signals and a communication station for performing the method
JP2010539519A (en) * 2006-09-29 2010-12-16 シーメンス アクチエンゲゼルシヤフト Method for exchanging encrypted data and communication system
US8707038B2 (en) 2006-09-29 2014-04-22 Siemens Aktiengesellschaft Method for the encrypted data exchange and communication system

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