Hello,
I would like to open an existing PDF-File which is digitally signed and add a text annotation. In this code, I am also adding a new signature, because I did not find a way to save the document without invalidatin…...= new PKCS7(@"C:\temp\test.pfx", "test"); // Use PKCS7/PKCS7Detached...please attach the test pdf document and test certificate so I...