| 摘要 |
PROBLEM TO BE SOLVED: To make a plurality of applications which need authentication available by input of authentication information once in a network system which includes a plurality of systems which are not in relations of trust or cooperation mutually. SOLUTION: A Web server 10 performs authentication by collating authentication information from a terminal 13 and authentication information of a storage part, and when this authentication is materialized, creates and outputs a message including a user ID contained in the authentication information, a first URL (Unified Resource Locator) to the Web server 10, a second URL to the Web server 11, and information relevant to authentication strength of the storage part to a network. When receiving a message which indicates that authentication is successful from the Web server 11 and which includes the user ID, a first URL, a second URL and information relevant to authentication strength, and when this user ID is stored in the storage part, authentication is performed based on the information relevant to the received authentication strength and the information relevant to the authentication strength of the storage part. COPYRIGHT: (C)2010,JPO&INPIT |
