SIGNATURE DATA VERIFICATION SUPPORT SYSTEM AND SIGNATURE DATA VERIFICATION SUPPORT PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a signature data verification support system and program, capable of easily executing signature verification of a certificate issued from a different authentication bureau with no trust chain.;SOLUTION: In this system, all the authentication bureaus are searched (step S1), a trust anchor and authentication policy of each the authentication bureau are acquired (step S2), an authentication bureau database storing information for estimating and comparing trust of each the authentication bureau is constructed (step S3). A signature to the collected trust anchor is requested to each the authentication bureau (step S4), and trust anchor data with the signature are stored in a trust anchor database (step S5). A user wishing to execute the signature verification of the certificate with no trust chain accesses the databases, and execute the signature verification by use of the data.;COPYRIGHT: (C)2004,JPO&NCIPI