59 lines
3.8 KiB
HTML
59 lines
3.8 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Certificate extensions" />
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<meta name="abstract" content="Certificate extensions are information fields that provide additional information about the certificate." />
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<meta name="description" content="Certificate extensions are information fields that provide additional information about the certificate." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Certificate extensions</title>
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</head>
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<body id="rzahu_cert_extensions"><a name="rzahu_cert_extensions"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Certificate extensions</h1>
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<div><p>Certificate extensions are information fields that provide additional
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information about the certificate.</p>
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<p>Certificate extensions provide a means of expanding the original X.509
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certificate information standards. While information for some extensions is
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provided to extend identification information for the certificate, other extensions
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provide information about the cryptographic capabilities of the certificate.
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</p>
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<p>Not all certificates use the extension fields to extend distinguished name
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and other information. The number and type of extension fields that a certificate
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uses vary among the Certificate Authority (CA) entities that issue certificates. </p>
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<p>For example, the Local CA that Digital Certificate Manager (DCM) provides,
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allows you to use the Subject Alternative Name certificate extensions only.
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These extensions allow you to associate a certificate with a specific IP address,
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a fully-qualified domain name, or e-mail address. If you intend to use the
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certificate to identify an <span class="keyword">iSeries™</span> Virtual
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Private Network (VPN) connection endpoint, you must provide information for
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these extensions.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahurzahu4abunderstanddc.htm" title="View this information to better understand what digital certificates are and how they work. Learn about the different types of certificates and how you can use them as part of your security policy.">DCM concepts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzahudistname.htm" title="Use this information to learn about the identification characteristics of digital certificates.">Distinguished name</a></div>
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</div>
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</div>
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</body>
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</html> |