| 摘要 |
<p>A long-term signature group has a package of long-term signature data and an information file. The package of long-term signature data is obtained by compressing original data and XAdES as long-term signature data of original data into a single file. In the information file, the hash value of the package of long-term signature data, the expiration date of ATS to be used in XAdES, a distribution point of expiration information, the serial number of ATS, and the like are recorded. Non-destruction of the package of long-term signature data can be confirmed by the hash value, the expiration date of ATS can be confirmed by the expiration date, and the expiration information can be obtained from the distribution point of the expiration information to confirm the validity of ATS. Therefore, the validity of the long-term signature is efficiently confirmed.</p> |
