Signature reliable verification method, signature reliable verification program and data communication system

摘要

The order side terminal (10) as the voucher data (21) is drawn up with the voucher compilation department (11), appoints the verification method of reliability due to the verification methodological designated department (12), draws up the verification methodological data (22). The signature compilation department (13) from the voucher data (21) and the verification data (22) draws up signature (23), the certificate acquisition section (14) acquires the certificate (24). These voucher data (21) and the verification methodological data (22), it transmits signature (23) and the certificate (24), as the ordering data (20) the incoming order one terminal (30) verifies signature (23) with signature verification section 31, verifying the propriety of the verification method in the verification methodological data (22) of being shown by the verification methodological check section (33) verifies the reliability of the certificate (24) with the verification processing section (34).