Title:
ENCRYPTED COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2005/069532
Kind Code:
A1
Abstract:
A DNS Proxy unit (A12a) holds the domain name of a node to be subjected to encrypted communication in a CUG setting table (A125a), intercepts a name resolution request for a communication partner node outputted to a DNS server (B1a) from an application (A11x), and references the CUG setting table (A125a) to judge whether the communication partner is a node to be subjected to encrypted communication. If the node is to be subjected to encrypted communication, the IP address of the communication partner whose name has been resolved is registered in an encrypted communication setting table (A142a). When the application (A11x) transmits a data packet to the IP address, it is intercepted by a data transmission/reception unit (A14a) and the data packet destined to the IP address registered in the encrypted communication setting table (A142a) is encrypted by a communication encryption unit (A141a) and transmitted to the communication partner. Thus, when performing encrypted communication with a plurality of communication partners by using the communication encryption function provided by an OS, it is possible to set the node to be subjected to encrypted communication, by using a domain name.
Inventors:
ISHIKAWA YUICHI (JP)
FUJITA NORIHITO (JP)
IIJIMA AKIO (JP)
IWATA ATSUSHI (JP)
FUJITA NORIHITO (JP)
IIJIMA AKIO (JP)
IWATA ATSUSHI (JP)
Application Number:
PCT/JP2004/019593
Publication Date:
July 28, 2005
Filing Date:
December 28, 2004
Export Citation:
Assignee:
NEC CORP (JP)
ISHIKAWA YUICHI (JP)
FUJITA NORIHITO (JP)
IIJIMA AKIO (JP)
IWATA ATSUSHI (JP)
ISHIKAWA YUICHI (JP)
FUJITA NORIHITO (JP)
IIJIMA AKIO (JP)
IWATA ATSUSHI (JP)
International Classes:
G09C1/00; H04L9/14; H04L9/32; H04L12/22; H04L12/70; H04L29/06; (IPC1-7): H04L9/14; H04L9/32; H04L12/56
Foreign References:
| JP2001320403A | 2001-11-16 | |||
| JP2000099429A | 2000-04-07 |
Other References:
ISHIKAWA Y. ET AL: "Multi-Layer DNS niyoru Network Seigyo Kasutamaizeshon.", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS GIJUTSU KENKYU HOKOKO., vol. 103, no. 314, 12 September 2003 (2003-09-12), pages 91 - 94, XP002992182
Attorney, Agent or Firm:
Yamakawa, Masaki c/o Yamakawa International Patent Office (8th Floor Shuwa-Tameike Building, 4-2,
Nagatacho 2-chom, Chiyoda-ku Tokyo 14, JP)
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