l?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="http://docs.oracle.com/javase/8/docs/api/javax/security/auth/callback/Callback.html?is-external=true" title="class or interface in javax.security.auth.callback">Callback</a></pre>
<div class="block">Callback for acquiring a shared secret from a key repository.
 This Callback may be used by client or server authentication modules 
 to obtain shared secrets (for example, passwords) without relying on a 
 user during the