Unchangeable Advanced Settings

The Unchangeable Advanced Settings area contains the following settings. You cannot change these settings after you save the policy.

Encryption Algorithm and Key Length:
Used to protect your documents. You can choose from these options:
  • AES 128-bit

  • AES 256-bit. Only Acrobat 9.0 and later supports this option. To use AES 256 encryption for PDF files, obtain and install the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy files. These files replace the local_policy.jar and US_export_policy.jar files in the [JAVE_HOME]/lib/security folder. For example, if you are using Sun JDK 1.6, copy the downloaded files to the [dep root]/Java/jdk1.6.0_26/lib/security folder. You can download these files from Java SE Downloads.

  • No encryption. Acrobat 9.0 and later currently support this option. If you select this option, the Document Restrictions options are disabled. This option may be useful if you want to use Rights Management for document auditing or version control but to not want to encrypt the document.

Document Restrictions:
Select the PDF document components to encrypt. Other client applications encrypt the entire document but not linked or embedded files. You can choose from these options:
  • The entire document, including its attachments and metadata. Metadata is information about the document and its content that you can view through the document Properties dialog box or the Acrobat Advanced menu. In Acrobat, you can attach files of different types (for example, text, audio, and video files) to PDF documents.

  • The document and its attachments but not the metadata.

  • The document attachments only. You can encrypt the attachments to a PDF file without encrypting the document content.

// Ethnio survey code removed