| 摘要 |
<P>PROBLEM TO BE SOLVED: To apply a long-term signature to both original data and attribute information. <P>SOLUTION: A user inputs attributes into a long-term-signature registration system 8 which: uses the attributes to set an attribute-value set for original data; compresses the original data and attribute-value set into one compressed package of data for creating a long-term signature; and outputs the compressed data to a long-term-signature system 1 to be registered. The long-term-signature system 1: decompresses the aforementioned compressed data to obtain original data and attribute-value set; applies a long-term signature to a group including the original data and the attribute-value set, thereby creating an XAdES (long-term-signature data) for the group of the original data and the attribute-value set; compresses the original data, attribute-value set, and XAdES into one package of long-term-signature data; and outputs the package to a document-management system 9 to be registered. <P>COPYRIGHT: (C)2012,JPO&INPIT |
