发明名称 |
LONG-TERM SIGNATURE TERMINAL, LONG-TERM SIGNATURE SERVER, LONG-TERM SIGNATURE TERMINAL PROGRAM, AND LONG-TERM SIGNATURE SERVER PROGRAM |
摘要 |
A client terminal 3 can generate PAdES while performing communication with a long-term signature server 2 without delivering a PDF document and a secret key used in an electronic signature to the long-term signature server 2. PAdES is a long-term signature format which is specified for a PDF file. The client terminal 3 transmits CAdES with the electronic signature before time stamp issuance to the long-term signature server 2 to request to issue a time stamp to CAdES. The client terminal 3 requests the long-term signature server 2 to collect verification information, acquires the verification information, further generates information for confirming unfalsification of a signed PDF document and the verification information therefrom, and transmits the information to the long-term signature server 2 to request to generate DTS. With the above, it is possible to perform a long-term signature while retaining confidential information on a user side. |
申请公布号 |
US2013326225(A1) |
申请公布日期 |
2013.12.05 |
申请号 |
US201113985584 |
申请日期 |
2011.12.08 |
申请人 |
MURAO SHINICHI;IL SUNG CO., LTD. |
发明人 |
MURAO SHINICHI |
分类号 |
H04L9/32 |
主分类号 |
H04L9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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