| 摘要 |
PROBLEM TO BE SOLVED: To provide a verifying method for an authentic fact in which validity of an electronic signature can be permanently verified on the side of a receiving means without restricted by the validity of an authentication certificate of a preparation means and the verification can be performed through a common processing procedure independent of the authentic fact. SOLUTION: The authentic fact is verified by a step (1) for preparing a document A of an electronic document 3 with an electronic signature 31 including an authentication certificate 311 of preparer by a preparation means 1, a step (2) for requesting the authentication of the fact on the document A to an authentication station 5 by the preparation means 1, a step (3) for issuing a digital receipt 4 as an electronic document with an electronic signature 41 including an authentication certificate 411 of the authentication station 5 describing an authentic fact 42 from the authentication station 5 to the preparation means 1 and sending this receipt to the preparation means 1, a step (4) for preparing a document B adding and integrating the digital receipt 4 with the document A by the preparation means 1, a step (5) for sending the document B to a receiving means 2 by the preparation means 1, steps (6) and (7) for verifying the validity of the digital receipt 4 by the receiving means 2 while using a PKI 6 when it is within the validity of the authentication certificate 411 of the authentication station 5, and steps (8) and (9) for verifying the validity while using the authentication station 5 when it is out of the validity. COPYRIGHT: (C)2003,JPO
|
