Operation Manual

227
USING ACROBAT X STANDARD
Digital signatures
Last updated 10/11/2011
Note: If you did not embed a timestamp when you signed the document, you can add one later to your signature. (See
“Establish long-term signature validation” on page 238.) A timestamp applied after signing a document uses the time
provided by the timestamp server.
Configure a timestamp server
To configure a timestamp server, you need the server name and the URL, which you can obtain from an administrator
or a security settings file.
If you have a security settings file, install it and don’t use the following instructions for configuring a server. Ensure
that you obtained the security settings file from a trusted source. Don’t install it without checking with your system
administration or IT department.
1 Do one of the following:
• In Acrobat, choose Tools > Sign & Certify > More Sign & Certify > Security Settings.
• In Reader, choose Edit > Protection > Security Settings.
Note: If you don’t see the Sign & Certify or Protection panel, see the instructions for adding panels at “Task panes” on
page 8
2 Select Time Stamp Servers on the left.
3 Do one of the following:
• If you have an import/export methodology file with the timestamp server settings, click the Import button .
Select the file, and click Open.
• If you have a URL for the timestamp server, click the New button . Type a name, and then type the server URL.
Specify whether the server requires a user name and password, and then click OK.
Set a timestamp server as the default
To be able to use a timestamp server to timestamp signatures, set it as the default server.
1 Do one of the following:
• In Acrobat, choose Tools > Sign & Certify > More Sign & Certify > Security Settings.
• In Reader, choose Edit > Protection > Security Settings.
Note: If you don’t see the Sign & Certify or Protection panel, see the instructions for adding panels at “Task panes” on
page 8
2 Select the timestamp server, and click the Set Default button .
3 Click OK to confirm your selection.
More Help topics
“Validate a timestamp certificate” on page 236
Adobe LiveCycle Rights Management (ALCRM) servers
Adobe LiveCycle Rights Management (ALCRM) servers let you define centralized policies to control access to
documents. The policies are stored on the ALCRM server. You require server access to use them.
ALCRM servers embed user access information in documents. Therefore, specify document recipients in ALCRM
policies. Alternatively, let the ALCRM server retrieve the list of recipients from LDAP directories.
Use ALCRM servers to set permissions for separate document tasks, for example opening, editing, and printing. You
can also define document auditing policies on ALCRM servers.