PdfSignatureLockedFieldCollectionPermission Property

(Optional; PDF 2.0) The access permissions granted for this document. Valid values shall be:

• None - No changes to the document are permitted; any change to the document shall invalidate the signature.
• FillForm - Permitted changes shall be filling in forms, instantiating page templates, and signing; other changes shall invalidate the signature.
• CommentAndFillForm - Permitted changes are the same as for FillForm, as well as annotation creation, deletion, and modification; other changes shall invalidate the signature.

The default value, , shall result in no effect on signature validation rules.

If the Permission is already in effect from an earlier incremental save section or the original part of the document (via AuthorPermission), the value shall specify permission less than or equal to the permission already in effect based on signatures earlier in the document. That is, permission can be denied but not added. If the value specifies greater permission than a value already in effect, the new value is ignored.

If the document does not have an author signature (AuthorPermission is ), the initial permission in effect is those based on the CommentAndFillForm.

The new permission applies to any incremental changes to the document following the signature of which this PdfSignatureLockedFieldCollection is part.