Represents the "EncryptMetadata" entry of the public-key security handler crypt filter object.

It is an optional entry defined as part of the PDF 1.0 specification.

It contains a bool representing a PDF boolean object.

The PDF specification states that this item assumes a value of true if no value has been provided.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 27, page 69.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 27, page 92.