The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2013
Filed:
Nov. 04, 2004
Makoto Saito, Tokyo, JP;
Osamu Tokunaga, Urayasu, JP;
Toshiyuki Yamasaki, Boca Raton, FL (US);
Shin Miyakawa, Tokyo, JP;
Yasuhiro Shirasaki, Fuchu, JP;
Takamasa Uchiyama, Tokyo, JP;
Satoshi Fukada, Tokyo, JP;
Takashi Egashira, Chiba, JP;
Toshiaki Suzuki, Warabi, JP;
Makoto Saito, Tokyo, JP;
Osamu Tokunaga, Urayasu, JP;
Toshiyuki Yamasaki, Boca Raton, FL (US);
Shin Miyakawa, Tokyo, JP;
Yasuhiro Shirasaki, Fuchu, JP;
Takamasa Uchiyama, Tokyo, JP;
Satoshi Fukada, Tokyo, JP;
Takashi Egashira, Chiba, JP;
Toshiaki Suzuki, Warabi, JP;
NTT Communications Corporation, Tokyo, JP;
Abstract
A method for establishing an encrypted communication channel between a first apparatus and a second apparatus by using a session management apparatus. The method includes: establishing a first encrypted communication channel between the session management apparatus and the first apparatus by performing mutual authentication between the session management apparatus and the first apparatus; establishing a second encrypted communication channel between the session management apparatus and the second apparatus by performing mutual authentication between the session management apparatus and the second apparatus; and exchanging key information between the first apparatus and the second apparatus via the first encrypted communication channel and the second encrypted communication channel so as to establish an encrypted communication channel between the first apparatus and the second apparatus.