2012

Table Of Contents
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.
Install a Root Certificate
When you receive a file that contains a digital signature from a certificate
authority that is not recognized by your operating system, you may need to
obtain the root certificate (the highest level of certificate in a certificate chain)
before you can determine if the digital ID in the digital signature is valid.
Digital IDs work on the basis of a trust hierarchy. In a trust hierarchy, the root
certificate is the digital ID of the issuing certificate authority. Popular browsers
such as Microsoft Internet Explorer already include the root certificates of the
major certificate vendors, making those digital IDs automatically trusted.
When you receive a file that is signed with a digital ID issued by someone
other than a major vendor (for example, your company's internal IT
department), you cannot validate the digital ID until you receive the root
certificate.
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, click Start menu (Windows)
Settings Control Panel Internet Options.
3 In the Internet Properties dialog box, Content tab, click Certificates.
4 In the Certificate Manager, click Import to run the Certificate Manager
Import Wizard.
5 Follow the on-screen instructions to obtain a root certificate for the
current file.
View Drawings with Digital Signatures | 2075