| US 7,542,573 B2 | ||
| Providing apparatus, communication device, method, and program | ||
| Katsuhisa Ogawa, Machida (Japan); Naohiko Suzuki, Tokyo (Japan); and Hiroaki Nakazawa, Kawasaki (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on May 23, 2005, as Appl. No. 11/135,156. | ||
| Claims priority of application No. 2004-167213 (JP), filed on Jun. 04, 2004. | ||
| Prior Publication US 2005/0273595 A1, Dec. 08, 2005 | ||
| Int. Cl. H04L 9/08 (2006.01) | ||
| U.S. Cl. 380—279 [380/255; 380/259] | 14 Claims |
| 6. A providing method in which a providing apparatus provides information required for secure communication to first and second
devices, the providing method comprising:
transferring to the providing apparatus, by a connection apparatus for connecting the first device and the second device,
a plurality of messages transmitted from the first device and the second device for establishing a session between the first
device and the second device;
extracting, by the providing apparatus, a first parameter used by the first device for the secure communication and device
and a second parameter used by the second device for the secure communication from the plurality of messages;
generating, by the providing apparatus, the information required for the secure communication based on the parameters extracted
from the plurality of messages; and
transmitting the generated information to the first and second devices, by the providing apparatus,
wherein the plurality of messages transferred by the connection apparatus includes a first message transmitted from the first
device for establishing a session with the second device and a second message indicating that the second device accepts the
first message.
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