Pdf |
Gets the set of PdfSignatureLocks that specify what changes, made to the document after the signature was applied, invalidate the signature.
If the value is , then the signature does not specify a Reference entry.
To set the Locks, sign the PdfSignatureField with a PdfSigner whose AuthorPermission is not or use any SetLockedFields method before signing on a PdfSignatureField that holds the signature.