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<h1 class="topictitle1">Creating a GSSCredential</h1>
<div><p>A GSSCredential contains all the cryptographic information necessary
to create a context on behalf of a principal and can contain credential information
for multiple mechanisms.</p>
<p>GSSManager has three credential creation methods. Two of the methods take
for parameters a GSSName, the lifetime of the credential, one or more mechanisms
from which to get credentials, and the credential usage type. The third method
takes only a usage type and uses the default values for other parameters.
Specifying a null mechanism also uses the default mechanism. Specifying a
null array of mechanisms causes the method to return credentials for the default
set of mechanisms.</p>
<div class="note"><span class="notetitle">Note:</span> Because IBM<sup>®</sup> JGSS
supports only the Kerberos V5 mechanism, that is the default mechanism.</div>
<p>Your application can create only one of the three credentials types (<var class="varname">initiate,</var> <var class="varname">accept</var>,
or <var class="varname">initiate and accept</var>) at a time.</p>
<ul><li>A context initiator creates <var class="varname">initiate</var> credentials</li>
<li>An acceptor creates <var class="varname">accept</var> credentials</li>
<li>An acceptor that also behaves as an initiator creates <var class="varname">initiate
and accept</var> credentials.</li>
</ul>
<p><strong>Examples: Obtaining credentials</strong></p>
<p>The following example obtains the default credentials for an initiator:</p>
<pre>GSSCredentials fooCreds = manager.createCredentials(GSSCredential.INITIATE)</pre>
<p>The following example obtains Kerberos V5 credentials for the initiator <em>foo</em> that
have the default validity period:</p>
<pre>GSSCredential fooCreds = manager.createCredential(fooName, GSSCredential.DEFAULT_LIFETIME,
krb5Mech,GSSCredential.INITIATE);</pre>
<p>The following example obtains an all-default acceptor credential:</p>
<pre>GSSCredential serverCreds = manager.createCredential(null, GSSCredential.DEFAULT_LIFETIME,
(Oid)null, GSSCredential.ACCEPT);</pre>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahajgssdev10.htm" title="There are multiple steps required to develop a JGSS application, including using transport tokens, creating the necessary JGSS objects, establishing and deleting context, and using per-message services.">IBM JGSS application programming steps</a></div>
<div class="previouslink"><strong>Previous topic:</strong> <a href="rzahajgssdev1020.htm" title="GSSName represents the identity of a GSS-API principal. A GSSName may contain many representations of the principal, one for each supported underlying mechanism. A GSSName that contains only one name representation is called a Mechanism Name (MN).">Creating a GSSName</a></div>
<div class="nextlink"><strong>Next topic:</strong> <a href="rzahajgssdev1040.htm" title="IBM JGSS supports two methods provided by GSSManager for creating a context.">Creating GSSContext</a></div>
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