Adding security to PDF files. Adobe Acrobat 4.0
Iklan
Iklan
Setting Acrobat Distiller Options
Page 175
■ To save the changes as a different job options file and make that the new job options file, click Save As. Then enter a name and location for the new set, click
Save in the Save Job Options As dialog box, and click OK. By default, these files are saved in the Distillr/Settings folder (Windows) or Distiller/Settings folder
(Mac OS) in the Acrobat folder. You cannot overwrite the three predefined sets of options.
Adding security to PDF files
You can limit access to all PDF files created by Distiller by giving the files passwords and restricting certain features such as printing and editing. You can limit the access when you first create a PDF file or any time you save the file in
Acrobat. When files have restricted features, any tools and menu items related to those features are dimmed.
A PDF file can have an open document password and a change security settings password. If the file has both passwords, it can be opened with either one. When a file is opened with an open document password, the security restrictions are temporarily disabled. If you set any security restrictions in your file, you should also specify a change security setting password; otherwise anyone who opens the file could remove the restrictions.
Acrobat uses the RC4 method of security from RSA Corporation to secure
PDF files.
Setting Acrobat Distiller Options
Page 176
To add security to PDF files:
1 Start Distiller.
2 Choose Settings > Security.
3 Enter a password in one or both of the password text boxes:
■ For Open Document, enter the password users must enter before they can open the file.
■ For Change Security, enter the password users must enter before they can set or change any security options.
Note: It is a good idea to use different passwords for the two text boxes.
Otherwise, a user who has the password to open the document can also change the document’s security options.
4 Select options to prevent users from printing, changing the document, selecting text and graphics, or adding or changing notes and form fields:
■ Printing prohibits users from printing the file.
■ Changing The Document prohibits users from filling in form fields, as well as making any other changes.
■ Selecting Text and Graphics prohibits users from selecting these elements.
■ Adding Or Changing Notes And Form Fields prohibits users from adding or changing these areas, but does allow users to fill in the fields.
Unduh
Iklan