JPS57207453A - Managing system for key for encryption communication - Google Patents
Managing system for key for encryption communicationInfo
- 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
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.
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)
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 |
-
1981
- 1981-06-16 JP JP56092467A patent/JPS57207453A/en active Pending
Cited By (6)
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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