It is better to not start a new thread for the same topic.
Please, see answer in the previous thread.
For the hashing of the visible signature image etc, I do not know the exact details, but likely that needs to be put into the PDF before you hash it. Remember that for PDF signing you will hash the whole document except one area (byte range) where you reserve space for inserting the signature.
Cheers,
Markus
PrimeKey
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Hi All,
I I want to do a client side hashing to digital sign a PDF.
in my understanding is: (please correct me if I'm wrong)
I have to a PDF hash and send to SignServer and SignServer will returns a p7s file or in base64 string format.
a PDF hash must contains the following info: (this part is what I don't understand)
and returning p7s file or base64 string containing such info and ready to be concatenated to the PDF (correct me if I'm wrong)
does my understanding above correct or not?
is there any online signserver simulator that I can use to simulate it?
I need advice from the expert here :)
many thanks in advance
Don
Hi Don,
This seems to be the same question as you already asked in a different forum post here:
https://sourceforge.net/p/signserver/discussion/668765/thread/fabdd73904/#49fc
It is better to not start a new thread for the same topic.
Please, see answer in the previous thread.
For the hashing of the visible signature image etc, I do not know the exact details, but likely that needs to be put into the PDF before you hash it. Remember that for PDF signing you will hash the whole document except one area (byte range) where you reserve space for inserting the signature.
Cheers,
Markus
PrimeKey