Got it - missed the SigQ validation stuff...
The problem is more clear if you use Acrobat Professional (which
anyone doing PDF development needs to own a copy of!) and the
Preflight feature, which reports that there is a "Key-Value Error"
The value associated with the key is of incorrect type
Encoding
CosName Resources 0 ->AcroForm->DR
Leonard
On Oct 1, 2007, at 12:22 PM, Xavier Le Vourch wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Leonard Rosenthol wrote:
>> I opened this PDF up in Acrobat 8.1 and it says that the document
>> hasn't been modified since it was signed, but the signature's
>> validity is unknown - which is correct since I don't have this sig in
>> my keystore.
>>
>> What am I missing?
>
>
> Whether the signature is added as trusted or not, I get the same 4000
> error code (Unrecognized Pdf Content) in the document integrity tab
> the
> original poster mentioned and this does not involve the timestamp code
> which is not yet part of the official iText library, but just adding a
> signature to a basic document.
>
> I thought that this could help figure out where the 4000 error code
> was
> coming from... I don't know if this error is "normal" or whether the
> signing code contains some code that is not completely following
> the Pdf
> reference. BTW, that was tested with Acrobat Reader 8.1.1 on Linux.
>
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