LOG-IN INFORMATION MANAGEMENT DEVICE AND METHOD

PROBLEM TO BE SOLVED: To strengthen the security of a system for enabling a user to use a service to be provided by another server without performing any log-in input again after logging in one server. SOLUTION: An aggregation server 1 is connected to a user device 3 which is operated by a user. The aggregation server 1 is provided with a log-in information storage part 120 for storing user-categorized log-in information for logging in a server 5 while associating with the identification information of the user; an encryption processing part 14 for acquiring and encrypting the user-categorized log-in information of the log-in information storage part 120 based on the user identification information input from the user device 3 and an auto-log-in processing part 13 for outputting encrypted cipher information, a decoding program for decoding the cipher information and picture information for accepting the input of a decoding key for decoding the cipher information to the user device 3. COPYRIGHT: (C)2007,JPO&INPIT