USER ATTRIBUTE INFORMATION MANAGEMENT PROGRAM, USER ATTRIBUTE INFORMATION CONFIRMATION PROGRAM, USER ATTRIBUTE INFORMATION MANAGEMENT DEVICE, USER ATTRIBUTE INFORMATION CONFIRMATION DEVICE, AND USER ATTRIBUTE INFORMATION MANAGEMENT SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a technology for safely managing the update of the attribute information of a user. PSOLUTION: A step S16 is executed for acquiring the user specification information of a user as the object of confirmation and a hash value for confirmation obtained from a client by applying prescribed hash functions about the attribute value of the user as the object of confirmation by using a hash database in which the user specification information specifying a user and a hash value for comparison acquired by applying prescribed hash functions about the attribute value of the user are associated for each user, and for comparing the hash value for confirmation and the hash value for comparison associated with the user specification information of the user as the object of conformation by referring to the hash database in a center server to decide whether or not those hash values are matched. PCOPYRIGHT: (C)2009,JPO&INPIT