Merge "Remove finalizer which clears user secret at unpredictable time."

    }

    /**

     * Removes secret from memory than object is no longer used.

     * Since finalizer call is not reliable, please use @link {#clearSecret} directly.

     */

    @Override

    protected void finalize() throws Throwable {

        clearSecret();

        super.finalize();

    }

    /**

     * Fills mSecret with zeroes.

     * Fills secret with zeroes.

     */

    public void clearSecret() {

        Arrays.fill(mSecret, (byte) 0);