public static void setSharedSecretAllowed( boolean sharedSecretAllowed )
    {
        JiveGlobals.setProperty( "xmpp.auth.sharedSecretEnabled", sharedSecretAllowed ? "true" : "false" );
    }
Sets whether 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.

@param sharedSecretAllowed true if shared secret authentication should be enabled.
xmppserver/src/main/java/org/jivesoftware/openfire/sasl/JiveSharedSecretSaslServer.java