发明名称 |
Time stamping method employing multiple receipts linked by a nonce |
摘要 |
A method for time stamping a digital document employs a two-part time stamp receipt. The first part of the time stamp receipt includes identifying data associated with a document and a nonce. The second part of the time stamp receipt includes a time indication and the nonce. The nonce serves as a link between the first and second parts.
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申请公布号 |
US7519824(B1) |
申请公布日期 |
2009.04.14 |
申请号 |
US19990458410 |
申请日期 |
1999.12.10 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
PEYRAVIAN MOHAMMAD;ROGINSKY ALLEN;ZUNIC NEVENKO;MATYAS, JR. STEPHEN M. |
分类号 |
H04L9/00;G06F7/04;H04K1/00 |
主分类号 |
H04L9/00 |
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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