Adobe Illustrator CS3 Manual de usuario descargar pdf (Pagina 292)

ILLUSTRATOR CS3

User Guide

286

See also

“About Adobe PDF” on page 276

“Printing and saving transparent artwork” on page 417

“About overprinting” on page 424

Adding security to PDF files

When saving as PDF, you can add password protection and security restrictions, limiting not only who can open the

file, but also who can copy or extract contents, print the document, and more.

A PDF file can require passwords to open a document (document open password) and to change security settings

(permissions password). If you set any security restrictions in your file, you should set both passwords; otherwise,

anyone who opens the file could remove the restrictions. If a file is opened with a permissions password, the security

restrictions are temporarily disabled.

The RC4 method of security from RSA Corporation is used to password-protect PDF files. Depending on the

Compatibility setting (in the General category), the encryption level will be high or low.

Note: Adobe PDF presets don’t support passwords and security settings. If you select passwords and security settings in

the Export Adobe PDF dialog box, and then click Save Preset, the passwords and security settings won’t be preserved.

Security options

You can set the following options when you create a PDF or when you apply password protection to a PDF. Options

vary depending on the Compatibility setting. Security options are not available for PDF/X standards or presets.

Compatibility Sets the type of encryption for opening a password-protected document. Acrobat 6 and later lets you

enable metadata for searching.

Be aware that anyone using an earlier version of Acrobat cannot open a PDF document with a higher compatibility

setting. For example, if you select the Acrobat 8 option, the document cannot be opened in Acrobat 6.0 or earlier.

Require Password to Open the Document Select this option to require users to type the password you specify to

open the document.

Document Open Password Specify the password that users must type to open the PDF file.

Note: If you forget a password, there is no way to recover it from the document. It’s a good idea to store passwords in a

separate secure location in case you forget them.

Use A Password To Restrict Editing And Printing Of The Document Restricts access to the PDF file’s security settings.

If the file is opened in Adobe Acrobat, the user can view the file but must enter the specified Permissions password

in order to change the file’s Security and Permissions settings. If the file is opened in Illustrator, Photoshop, or

InDesign, the user must enter the Permissions password, since it is not possible to open the file in a view-only mode.

Permissions Password Specify a password that is required to change the permissions settings. This option is

available only if the previous option is selected.

Printing Allowed Specifies the level of printing that users are allowed for the PDF document.

• None Prevents users from printing the document.

• Low Resolution (150 dpi) Lets users print at no higher than 150-dpi resolution. Printing may be slower because

each page is printed as a bitmap image. This option is available only if the Compatibility option is set to Acrobat 5

(PDF 1.4) or later.

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Adobe Illustrator CS3 Manual de usuario Pagina 292

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