Structured document signature device, structured document adaptation device and structured document verification device
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United States of America Patent
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Dec 29, 2009
Grant Date -
Mar 24, 2005
app pub date -
Sep 17, 2004
filing date -
Sep 19, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A structured document signature device includes an adaptation policy associator configured to associate each element forming a structured document with an adaptation policy indicating an action which can be adapted to a child element of the element or a value of the element; a hash tree constructor configured to insert a hash value of the child element of the element or a hash value of the value of the element into the structured document as an attribute value of the element, and to construct a hash tree including the hash value; a digital signature adder configured to add a digital signature to a root of the hash tree and the adaptation policy; and an output configured to output the structured document and the digital signature.
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