PdfSecurityOptionsEncryptMetadata Property

public bool EncryptMetadata { get; set; }

Public Property EncryptMetadata As Boolean
	Get
	Set

Set it to false to leave the XMP metadata packet readable - by a search index or a document management system - while everything else stays encrypted. The document information entries (title, author, keywords) are encrypted either way, as the PDF format requires, and a document that carries no XMP packet is not affected. It takes effect when a password is set. The PDF format cannot leave metadata readable under a 40-bit RC4 key, so with EncryptKey40Bit the metadata is always encrypted.