It sounds like you are trying to implement a CAdES-conforming DigSig
implementation with PDF - and, it isn't supported...
Leonard
On Oct 14, 2008, at 11:06 AM, Inma Marín wrote:
Hello,
I would like to know how to add a Timestamp to a PDF Signature with
IText. The situation is the following: I open a PDF document to sign
it, using IText and, after that, I close it. After some time (for
example, a day), I need to open the signed PDF document and add a
timestamp to the previously generated signature.
Could anybody be so kind as to tell me how can I do it, please?
Thank you very much in advance.
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