if( log.level > 0 )
                ex.printStackTrace( log );
        }
        E( p21, challenge, p24 );
        return p24;
    }

    /**
     * Creates the LMv2 response for the supplied information.
     *
     * @param domain The domain in which the username exists.
     * @param user The username.
     * @param password The user's password.
     * @param challenge The server challenge.

     * equality. Two <tt>NtlmPasswordAuthentication</tt> objects are equal if
     * their caseless domain and username fields are equal and either both hashes are external and they are equal or
     * both internally supplied passwords are equal. If one <tt>NtlmPasswordAuthentication</tt> object has external
     * hashes (meaning negotiated via NTLM HTTP Authentication) and the other does not they will not be equal. This is