Adobe ACROBAT 9 HOW-TOS - Using Security Levels and Passwords for a Document

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C H A P T E R S I X T E E N Making Your Documents Secure
318
The simplest way to protect your document is to use passwords, which
can be applied in any version of Acrobat 9. Acrobat oers two levels
of passwords. You can use one or both types of passwords in the same
document. Choose from the following:
•
The user level, or Document Open password, which requires the user
to type the correct characters in order to open the le
•
The master-level password, or Permissions password, which allows
you to specify the document restrictions
The default setting is a high level of security compatible with Acrobat
version 7 and later. To change to a lower level of security for readers using
older versions of Acrobat, or a higher level of security to use more fea-
tures, you have to reset the Compatibility level.
Follow these steps to apply a password to a document in Acrobat 9:
1. Choose File > Properties to open the Document Properties dialog; click
the Security tab to display the settings.
2. Select Password Security from the Security Method pop-up menu to
display the Password Security – Settings dialog.
3. Select a program version from the Compatibility pop-up menu. The
level you choose denes what options are available when you’re set-
ting passwords.
4. You can add one or two passwords:
•
Select the “Require a password to open the document” check box
to activate the eld. Type in the password.
•
Select the “Restrict editing and printing of the document” check
box. Type in the password. Then specify the restrictions you want
to add to the document (Figure 119a).
Using Security Levels and
Passwords for a Document
#
119
Give Your Permission
Here’s a rundown on the per-
missions you control using
password security at the
Acrobat 7 or newer level:
•
Disallow (or allow) low- or
high-resolution printing.
•
From the Changes
Allowed pop-up menu
(shown in Figure 119a),
choose a level of permis-
sion for the user with
regard to form fields,
signatures, and page
orientations.
About Metadata
Metadata is descriptive
information about a file
that can be searched and
processed by a computer.
Adobe’s Extensible Meta-
data Platform (XMP) lets
you embed metadata into a
file to provide information
about a document’s con-
tents. Applications that sup-
port XMP can read, edit, and
share this information across
databases, file formats, and
platforms. If you use Acrobat
versions 6 to 9 compatibility
options, you can choose to
enable Metadata in the secu-
rity settings.
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From the Library of Daniel Dadian