How to sign using pdfsig and improvements to man
I'm in poppler-utils version 21.02.0-1 checking the new sign functionality.
man pdfsig it says I must use "-sign number" to sign a PDF. My related issues:
The man documentation is not clear when it says "Sign the document in the signature field with the given number". Looking at pdfsig.cc in line 191 it seems it must be a yet contained signature inside the PDF. Then: should it be a signed PDF? what is the meaning of re-sign?
I suggest to write an example of how to use
-signoption (by the way, for now I'm not able to use this functionality ;) )
I suggest to insert a newline in man documentation so
-sign numberappears in the next line instead of -dump... -sign
As signature functionality is a very important one, I suggest to change DESCRIPTION giving more weight to that instead of ending with "Moreover, with option -sign it can sign a PDF document". A proposal for DESCRIPTION: pdfsig signs PDF documents and verifies digital signatures inside a PDF document ...
Thanks a lot in advance!