I solved the problem really simply.
The fact is that evince is so concieved that it keeps an history of recently
used files.
However, if the files are not available anymore, because for example they are
located on a share, on a remote machine, evince tries - it takes generally
minutes - to make
With the iText library written in Java, many signing operations can be done:
http://itextpdf.sourceforge.net/howtosign.html
It should easy to understand what is don in this library and to port the
code in poppler or in another library.
Note: Should the use of gnome-keyring be done?
--
You recei