| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To establish a safe communication path between fist and second nodes via a third node. <P>SOLUTION: An information processing apparatus (10) of a third node receives, from a first node (22) on a second safe communication path (432) established between the third node and the first node, a first request of establishment of a first communication path (402) including public information relating to a second node (28), extracts secret information relating to the second node on the basis of the public information by referring to node information, establishes a third communication path (434) with the second node on the basis of the secret information, transmits, to the second node on the third communication path, a second request of establishment of the first communication path including public information relating to the first node, receives a permission to the second request from the second node, and transmits, to the first node on the second safe communication path, the extracted secret information relating to the second node according to the received permission. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
