| 摘要 |
PURPOSE: The root key distribution method, and server and client can minimize the battery consumption amount of the terminal by using the calculation like the PRF and XOR. CONSTITUTION: It decodes the encryption message delivered from client and the decoder(130) gets the first random number, and the second random number and secret key. The root key generating unit is created the first random number of server. By using one or more client separates medicine 1 random number belonging to the first random number and group of server, the root key generating unit(160) is created the root key. It is especially created the root key secure short message from the root key the client belonging to the group and the root key security message generating part(170) transmits with client. |
