2004

788 | Chapter 27 Protect and Sign Drawings
To obtain a root certificate
1 To request the root certificate, contact the organization or individual who
attached a digital signature to the current file.
2 When you receive the root certificate, on the Start menu (Windows), click
Settings ➤ Control Panel ➤ Internet Options.
3 In the Internet Properties dialog box, click the Content tab.
4 On the Content tab, click Certificates.
5 In the Certificate Manager, click Import to run the Certificate Manager
Import Wizard.
6 Follow the on-screen instructions to obtain a root certificate for the
current file.
Use a Comment and Time Stamp
You can add a comment and time stamp to your digital signature.
Time services allow you to add the time stamp. When you send drawing files
over the Internet or work on collaborative projects, you can use a specific
time server to obtain an accurate, consistent time stamp.
Several government operations (such as the National Institute of Standards
and Technology, or the US Naval Observatory) and public systems (such as
California Institute of Technology) offer accurate time values. You can also
use your own server to create a time stamp.
To choose a time service and add a comment
1 Do one of the following:
■ On the Tools menu, click Options, and then in the Options dialog box,
on the Open and Save tab, click Security Options.
■ On the File menu, click Save As, and in the Save Drawing As dialog box,
on the Tools menu, click Security Options.
2 In the Security Options dialog box, on the Digital Signature tab, select
Attach Digital Signature After Saving Drawing.
3 In the Get Time Stamp From box, click a time service.
4 In the Comment box, add a comment.
5 Click OK.
Command line
SECURITYOPTIONS