发明名称 |
Method and apparatus for preparing and verifying documents |
摘要 |
A method for preparing and verifying a document, comprising the steps of: presenting the document to a document-registering office in a machine-readable format; editing the document to add an identification code associated with a non-copiable object; signing the edited document using a private key of the document-registering office; printing the digitally signed document in a machine-readable form; presenting the document and the object to an inspecting authority; recovering the digitally signed document from the machine-readable form of the printed document; verifying the digital signature of the document-registering office; and verifying that the identification code in the document corresponds to that of the presented object.
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申请公布号 |
US8578168(B2) |
申请公布日期 |
2013.11.05 |
申请号 |
US20070905478 |
申请日期 |
2007.10.01 |
申请人 |
RAMANI SRINIVASAN;GOEL DARPAN;KUMAR ANIL;HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
RAMANI SRINIVASAN;GOEL DARPAN;KUMAR ANIL |
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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