发明名称 |
SYSTEMS AND METHODS FOR AUTHENTICATING DOCUMENTS |
摘要 |
Abstract of the Disclosure Methods and systems for authenticating documents. Document data to be modified to contain authentication is inputted. A representation is determined from the document data. Assist information that is usable to reliably recover a determined representation is determined. A one-way hash of the representation and assist information is determined. The one-way hash is then cryptographically signed. The assist information and digitally signed one-way hash is then appended to the document. |
申请公布号 |
US2003131240(A1) |
申请公布日期 |
2003.07.10 |
申请号 |
US20020248138 |
申请日期 |
2002.12.19 |
申请人 |
XEROX CORPORATION |
发明人 |
GREENE DANIEL H.;GOLDBERG DAVID;BERN MARSHALL W. |
分类号 |
H04L9/32;(IPC1-7):H04L9/00 |
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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