I have a der certificate and I would like to use it for signing PDF documents. I was trying to use iSafePDF and the source from this software but it didn`t work.. I think, that the export from DER to PFX is the main problem, but i don`t know.. Please, do you know some way how to solve this problem? Thank you..
Here is the page of iSafePDF: iSafePDF: The Open Source PDF Signature Tool
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