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Securing the Map

We’ve come to the end of the project as far as the design and construction goes. The final step is to add encryption, or security, to the map. Amanda worked long and hard to create an attractive presentation for her Web site, and it’s a good idea to add a security policy to protect her work from users who might want to copy, print, or extract from the map.

There are several ways to add security, ranging from a simple password, to certificate encryption (described in Chapter 14), to server-based policies using third-party servers. In this case, Amanda will add a simple password to protect the document. The other forms of security are used for information exchange within a specified group of users and are not intended to protect content accessible to many anonymous users, such as visitors to her Web site.

You can work through several windows in Acrobat to apply different types of security. Let’s follow the simple route and use the Document Properties dialog to add a simple password.

Follow these steps to apply security by way of a password:

Choose File > Document Properties to open the Document Properties dialog, and then select the Security tab.

Click the Security Method pull-down arrow and choose Password Security from the list (Figure 4.29). The Password Security-Settings dialog opens.

Figure 4.29. Select the type of security to add to the document.

Choose “Acrobat 6.0 and higher” from the Compatibility pull-down list; a set of radio buttons become active.

Click the “Encrypt all document contents except metadata (Acrobat 6 and later compatible)” radio button.

Click “Use a password to restrict printing and editing of the document and its security settings.” The Permissions Password field becomes active.

Type a password in the Permissions Password field. You can click the Printing Allowed and Changes Allowed pull-down arrows and select options from these lists; in this case, however, neither printing nor changes are allowed.

Click OK to close the dialog. A message displays describing the effect of third-party security products; click OK to dismiss the message.

A Confirm Permissions Password dialog opens; type the password in the Permissions Password field to verify the password and click OK. You return to the Document Properties dialog.

Click OK to close the Document Properties dialog. You see one more message dialog, this time telling you to save the document in order to save the security settings. Click OK to dismiss the message and return to the program.

Don’t forget to save the document. And save it with an alternate name to make future work simpler. That is, if you save a copy of the original with security settings, you can use that on a Web page. If you need to make changes to the document, it’s simpler to reuse the original and save it with security than it is to remove security, make changes, and then reapply security again.

Finally, to test the document, close it and then reopen it. You’ll notice that many of the commands and tools are now inactive, based on the security settings selected. You won’t be able to save or print the document, for example, nor can you use any of the editing tools. You’ll also see a security icon at the lower left of the program window, indicating that security has been applied to the document. Move your pointer over the security icon to display a tooltip explaining the document’s protection (Figure 4.30).

Figure 4.30. A secure document displays an icon and messages on the program window.

Choosing a Compatibility Version

You have to balance what you want to protect in a document against both its intended use and the likely audience. You can choose from Acrobat version 3.0 through version 7.0 compatibility: Each version has different security capabilities. In this project, using the Acrobat 6.0 compatibility option means that the document’s content is encrypted but that its metadata (the information about the data the document contains) can still be accessed by search engines. This option is important for Amanda since her document is intended for online use on her commercial Web site.

Based on the versions of Acrobat Reader and Adobe Reader in use today, Acrobat 3.0– compatible documents can be viewed by the most users, Acrobat 7.0–compatible documents by the least number of viewers.

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