PdfSignerAuthorPermission Property

Gets or sets the permitted actions after certifying the document with this PdfSigner.

If set to a value, then the signature created by this PdfSigner is a regular, approval signature (also known as a recipient signature).

Otherwise, the signature created by this PdfSigner is a certification signature (also known as an author signature) (PDF 1.5). A document can contain only one signature field that contains a certification signature; it shall be the first signed field in the document. It enables the author to specify what changes shall be permitted to be made to the document and what changes invalidate the author's signature. The AuthorPermission in any of the Locks shall indicate the author's specification of which changes to the document will invalidate the signature. These changes to the document shall also be prevented if the PdfSignature is referred from the AuthorSignature property. A value of None indicates that the document shall be final; that is, any changes shall invalidate the signature. The values FillForm and CommentAndFillForm shall permit modifications that are appropriate for form field or comment workflows. Setting the value to any other PdfUserAccessPermissions is not supported and throws NotSupportedException.

Default value: .