ADOBE READER 8
User Guide
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A certificate must be explicitly trusted before you can use it to encrypt PDFs for the person associated with that
certificate. If you have multiple certificates for a person, set trust levels for at least one of their certificates.
You can also trust a certificate by trusting the root certificate. The root certificate is the originating authority in a
chain of certificate authorities that issued the certificate. By trusting the root certificate, you trust all certificates
issued by that certificate authority. Exercise caution when trusting root certificates.
1 Choose Document > Manage Trusted Identities.
2 Select a contact, and click Details.
3 Select the certificate name, and click Edit Trust.
4 In the Trust tab, select any of the following items to trust this certificate for:
Signatures And As a Trusted Root Trusts signatures for this certificate and trusts the certificate as a trusted root so
that any other certificates that have this certificate as the root in a certificate chain are also trusted.
Certified Documents Trusts documents in which the author has certified the document with an author signature.
Dynamic Content Trusts movies, sound files, and other dynamic elements.
Embedded High Privilege JavaScript Trusts embedded scripts.
5 Click OK, click OK again, and then click Close.
Delete a certificate from trusted identities
1 Choose Document > Manage Trusted Identities.
2 Choose Certificates from the Display menu.
3 Select the certificate, and click Delete.
Directory servers
About directory servers
Directory servers are commonly used as centralized repositories of identities within an organization. As such, the
server acts as an ideal location to store user certificates in enterprises that use certificate encryption. Directories help
you locate certificates from network servers, including LDAP (Lightweight Directory Access Protocol) servers. After
you locate a certificate, you can add it to your list of trusted identities so that you don’t have to look it up again. By
developing a storage area for trusted certificates, you or a member of your workgroup can facilitate the use of
encryption in the workgroup.
Configure a directory server manually
1 Choose Document > Security Settings.
2 Select Directory Servers on the left.
3 Click the New button , type the directory name and server settings, and click OK.
For more information on server settings, contact your system administrator.
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