public static boolean isSharedSecretAllowed()
    {
        return JiveGlobals.getBooleanProperty( "xmpp.auth.sharedSecretEnabled" );
    }
Returns true if shared secret authentication is enabled. Shared secret authentication creates an anonymous
session, but requires that the authenticating entity know a shared secret key. The client sends a digest of the
secret key, which is compared against a digest of the local shared key.

@return true if shared secret authentication is enabled.
xmppserver/src/main/java/org/jivesoftware/openfire/sasl/JiveSharedSecretSaslServer.java