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19.1 Overview
The ZyXEL Device can use certificates (also called digital IDs) to authenticate users. Certificates are
based on public-private key pairs. A certificate contains the certificate owner's identity and public
key. Certificates provide a way to exchange public keys for use in authentication.
19.1.1 What You Can Do in this Chapter
• The Local Certificates screen lets you generate certification requests and import the ZyXEL
Device's CA-signed certificates
• The Trusted CA screen lets you save the certificates of trusted CAs to the ZyXEL Device
19.4 on page
19.2 What You Need to Know
The following terms and concepts may help as you read through this chapter.
Certification Authority
A Certification Authority (CA) issues certificates and guarantees the identity of each certificate
owner. There are commercial certification authorities like CyberTrust or VeriSign and government
certification authorities. The certification authority uses its private key to sign certificates. Anyone
can then use the certification authority's public key to verify the certificates. You can use the ZyXEL
Device to generate certification requests that contain identifying information and public keys and
then send the certification requests to a certification authority.
P-873HNUP-51B User's Guide
(Section 19.4 on page
219).
C
HAPTER
219).
1 9
Certificates
(Section
211
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