To attach a digital signature to a file, you must have a digital ID (certificate), which is issued by a certificate authority. A digital ID identifies either an individual or an organization.

A digital ID contains a name, serial number, expiration date, and other information that certifies the digital signature. From a certificate authority, you can obtain digital IDs with a security level of Low, Medium, or High.

• Low. Use a Low security level if you want to sign multiple files quickly. A digital signature is automatically attached to all file types that are valid for a digital signature.
• Medium. Use a Medium security level if you want to be informed when an application is trying to create a signature with your digital ID. You are notified each time a digital signature containing your digital ID is attached to a file.
• High. Use a High security level if the signature is very sensitive and you do not want your computer to be misused in the signing of a file. You are prompted for a password each time you sign a file.

You can set an option to automatically attach your signature to a drawing whenever you save it. You also can sign many drawings at once, in a batch, and you can sign transmittal packages of drawings.

Procedure

To obtain a digital ID on the Internet

1. Open a search engine in your Internet browser and search for the term “digital certificate.”
2. Click a search result to find out more about a digital ID vendor and how to obtain a digital ID.

Quick Reference

Commands

SECURITYOPTIONS

Specifies password or digital signature options for a drawing file.

SIGVALIDATE

Displays information about the digital signature attached to a drawing file.

System Variables

SIGWARN

Controls whether a warning is presented when a file with an attached digital signature is opened.

Utilities

Attach Digital Signatures

Attaches a digital signature to files.