RootCauseunvalidated
you need to hash the prepared PDF (with signature dictionary containing the placeholder) — validators expect that the signed byte ranges encompass exactly everything except the placeholder itself. Tension: not something else. Outcome: If you want any decent PDF signature validator to positively validate your signature.
17ce9fa9-00dd-4702-95ad-0c49327b1a45
you need to hash the prepared PDF (with signature dictionary containing the placeholder) — validators expect that the signed byte ranges encompass exactly everything except the placeholder itself. Tension: not something else. Outcome: If you want any decent PDF signature validator to positively validate your signature.