ATTRIBUTE PROCESSING SYSTEM, ATTRIBUTE DISCLOSURE DEVICE, ATTRIBUTE COLLATION DEVICE, ATTRIBUTE PROCESSING METHOD, ATTRIBUTE DISCLOSURE METHOD AND ATTRIBUTE COLLATION METHOD

摘要

PROBLEM TO BE SOLVED: To enable a user to know the other users having the same preference while preventing the preference to be kept secret from being disclosed.;SOLUTION: A transmission part 51 discloses a secret preference list generated by applying unidirectional functions to the preference list of the user of an attribute disclosure device 11 to a WWW server 91. A collation part 71 collates the secret preference list generated by applying the same unidirectional functions to the preference list of the user of an attribute collation device 21-2 with the secret preference list disclosed to the WWW server 91. When the secrete preference lists match each other, a presentation part 72 presents the preference list.;COPYRIGHT: (C)2010,JPO&INPIT