| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an authentication system, an authentication data generating device, an authentication device and an authentication method which can authenticate validity of a combination of a terminal and positional history information. <P>SOLUTION: An authentication data generating server 10 comprises: an issue request reception unit 111 for receiving an issue request of log authentication data with a terminal ID of a portable terminal 50; a selection screen generating unit 112 and a selection log reception unit 113 for acquiring selection log data of the portable terminal 50; and a log authentication data generating unit 114 for generating log authentication data including the terminal ID and the selection log data and transmitting the generated log authentication data to the portable terminal 50. An authentication server 20 comprises: an authentication request reception unit 211 for receiving an authentication request with a terminal ID and the log authentication data; a log authentication data decryption unit 212 for extracting the terminal ID and the selection log data from the log authentication data; and a log authentication unit 213 for determining that a combination of the terminal ID and the selection log data is valid when the received terminal ID and the extracted terminal ID match each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
