Hi,
You can see it in PDFDebugger because indirect objects have something
like [19 0 R] in the tree, and direct objects don't.
Re signatures, there are many things that can go wrong... changes
between direct / indirect in revisions are bad, not handling locked
fields is bad (see recent answer on stackoverflow)
Does the file validate with ShowSignature.java?
Tilman
Am 29.11.2019 um 22:16 schrieb Jason Pyeron:
I am trying to track down differences between Acrobat and PDFBox with regards
to digital signatures.
I have made much progress in eliminating differences, but I am still getting the dreaded
"Bad parameter" when validating the signature.
While I cannot find the reference to quote right now, I seem to remember that
certain entries must be direct and other certain entries must not be direct in
certain dictionaries.
I am inspecting the two PDFs signed by PDFBox and Acrobat, and I clearly see
that PDFBox is making Root/AcroForm/Fields/[0]/Kids/[0]/Kids/[16]/V direct,
whereas Acrobat is indirect. My question is what is the best way to find which
dictionary it is directly stored in? Started with hex editor, and it is not fun
:( .
v/r,
Jason Pyeron
--
Jason Pyeron | Architect
PD Inc |
10 w 24th St |
Baltimore, MD |
.com: [email protected]
tel : 202-741-9397
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