发明名称 |
Document modification detection and prevention |
摘要 |
Methods and apparatus, including computer program products, implementing and using techniques for document authentication. An electronic document is presented to a user. The electronic document has data representing a signed state and a current state. A disallowed difference between the signed state and the current state is detected, based on one or more rules that are associated with the electronic document. A digital signature associated with the electronic document is invalidated in response to the detecting.
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申请公布号 |
US8533480(B2) |
申请公布日期 |
2013.09.10 |
申请号 |
US20100795502 |
申请日期 |
2010.06.07 |
申请人 |
PRAVETZ JAMES;CHAUDHURY KRISH;AGRAWAL SUNIL;ADOBE SYSTEMS INCORPORATED |
发明人 |
PRAVETZ JAMES;CHAUDHURY KRISH;AGRAWAL SUNIL |
分类号 |
G06F21/00;G06F;G06F1/00;G06F15/00 |
主分类号 |
G06F21/00 |
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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