Title:
CIPHERING COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP2808512
Kind Code:
B2
Abstract:
PURPOSE: To provide a ciphering communication system of the common key system not requiring complicated key management in which a communication charge of center access is less expensive.
CONSTITUTION: The system is provided with a 1st terminal equipment 100 including a 1st random number generating means 101, a 1st call connection request means 102, and a 1st session key reception means 103, with a 2nd terminal equipment 200 including a 2nd random number generating means 201, a 2nd call connection request means 202, a 2nd session key reception means 204, and a transfer means 203, and with a key delivery center 300 including a session key generating means 301, a ciphering means 302, and a delivery means 303 adding a ciphered signal by the ciphering means 302 to a call number release request message and delivering the result.
Inventors:
KOYAIZU IKURO
Application Number:
JP26234592A
Publication Date:
October 08, 1998
Filing Date:
September 30, 1992
Export Citation:
Assignee:
NIPPON DENSHIN DENWA KK
International Classes:
G09C1/00; H04L9/06; H04L9/08; H04L9/14; H04L12/02; (IPC1-7): H04L9/08; G09C1/00; H04L12/02
Domestic Patent References:
| JP63280531A | ||||
| JP254645A |
Other References:
電子情報通信学会技術研究報告（ＯＦＳ９２−３１）、Ｖｏｌ．９２、Ｎｏ．３３２（１９９２−１１−２０）ｐ．１９−２４
電子情報通信学会技術研究報告（ＯＦＳ９３−９）、Ｖｏｌ．９３、Ｎｏ．１６１（１９９３−７−２３）ｐ．２５−３０
電子情報通信学会論文誌、Ｖｏｌ．Ｊ７８−Ｄ−１、Ｎｏ．６（平成７−６−２５））ｐｐ．５４６−５５７
電子情報通信学会技術研究報告（ＯＦＳ９３−９）、Ｖｏｌ．９３、Ｎｏ．１６１（１９９３−７−２３）ｐ．２５−３０
電子情報通信学会論文誌、Ｖｏｌ．Ｊ７８−Ｄ−１、Ｎｏ．６（平成７−６−２５））ｐｐ．５４６−５５７
Attorney, Agent or Firm:
Tadahiko Ito
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