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.

Date of Patent:
Jan. 15, 2013

Filed:

Jan. 12, 2005
Applicants:

Yuichi Ishikawa, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Akio Iijima, Tokyo, JP;

Atsushi Iwata, Tokyo, JP;

Inventors:

Yuichi Ishikawa, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Akio Iijima, Tokyo, JP;

Atsushi Iwata, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

If the communication partner of a client node (A) is an encryption communication target node (C), a DNS Proxy unit (A) in the client node rewrites a response to a name resolution request for the communication partner node of an application from the actual IP address of the communication partner node to a loopback address that changes depending on the communication partner. On the basis of the destination loopback address of a data packet transmitted from the application, a communication encryption module (A) in the client node identifies the communication partner and the encryption communication path to be used for communication with the communication partner. Hence, encryption communication can simultaneously be executed directly with a plurality of communication partner nodes by using the communication encryption module that operates as an independent process.


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