SINGLE SIGN-ON INFORMATION MANAGEMENT SYSTEM AND MANAGEMENT METHOD

摘要

PROBLEM TO BE SOLVED: To prevent SSO(Single Sign-On) information including a user ID or password from being illegally acquired by a third person.SOLUTION: A management token 2 carried by a user U and a management server 4 are freely communicative via a user terminal 3, and the management server 4 includes: a division task for dividing SSO information including a user ID and password necessary for single sign-on into a plurality of data blocks, and for storing a part of the data blocks in the management server 4, and for storing the remaining data blocks in the management token 2; and a reproduction task for combining the data blocks stored in the management server 4 with the data blocks stored in the management token 2 to generate the SSO information.