This element specifies the parts of the PDF document to encrypt. The following values are supported:

None. No part of the document is encrypted.

AllContent. Encrypts the document, the document metadata, and the file attachments. If this option is selected, search engines cannot access the document metadata.

AllExceptMD. Encrypts the contents of a document but not the metadata. This setting allows search engines to access the document metadata. This option is available when you select a compatibility to Acrobat 6.0 and later.

Attachments. Encrypts only file attachments, which means that  password is required to open file attachments. Users can open the PDF without a password. Use this setting for security envelopes. This option is available when you set compatibility for Acrobat 7.0 and later.

file2pdfconfig Schema