| 摘要 |
PROBLEM TO BE SOLVED: To provide a key sharing method where an encryption key for configuring a stable communication channel is shared only between entities assumed by installers while preventing wiretapping by others. SOLUTION: The key sharing method between communication terminals includes the steps of installing a server 300 for holding information associated between communication terminals sharing the encryption key and a terminal 400 for transmitting the associated information to the server 300, storing a specific key of each communication terminal in the server 300, allowing the server 300 to authenticate the associated terminal 400, and allowing the associated terminal 400 to transmit the associated information to the server 300. Further, the method includes the steps of allowing the server 300 to encrypt the encryption key by the specific key based on the associated information so as to distribute the encrypted encryption key, and allowing a shared communication terminal to send a connection request to a sharing communication terminal. COPYRIGHT: (C)2009,JPO&INPIT
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