title: Add signature pades-epes signature-policy-identifier attribute with iTextsharp (5.5.8)
body: <p>I am currently evaluating iTextSharp (5.5.8) for a business case that includes pdf signing. The signature must include the pades-epes signature-policy-identifier attribute. I cannot find documentation and or samples to include this attribute. So the question I have is, is iTextSharp capable of providing this attribute and if so how can it be added.</p>