INFORMATION SHARING SYSTEM, AUTHENTICATION METHOD IN INFORMATION SHARING SYSTEM, MANAGEMENT DEVICE AND INFORMATION PROCESSOR AND THE LIKE

摘要

PROBLEM TO BE SOLVED: To provide an information sharing system and the like capable of performing authentication processing between a plurality of node devices without using an authenticating server or the like. SOLUTION: This information processor performed with restriction of operation by a user included in the information sharing system having a plurality of information processors communicable with each other via a network has: a means dividing a password for permitting the operation by the user to generate a plurality of division passwords; and a means specifying the information processor performing the authentication processing of each the division password on the basis of peculiar identification information corresponding to each the division password, releasing the operation restriction of the information processor when acquiring an authentication result of the effect that it is regular from each the specified information processor, and permitting the operation of the information processor of the user. COPYRIGHT: (C)2008,JPO&INPIT