de>key</code> - The secret key, or null if no key was found.</dd>
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<h4>getKey</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/javax/crypto/SecretKey.html?is-external=true" title="class or interface in javax.crypto">SecretKey</a>&nbsp;getKey()</pre>
<div class="block">Used to obtain the secret key set within the Callback.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
