Generate the Unicode MD4 hash for the password associated with these credentials.

def get_ntlm2_response(password, server_challenge, client_challenge):
        """
        Generate the Unicode MD4 hash for the password associated with these credentials.
        """
        md5 = hashlib.new('md5')
        md5.update(server_challenge + client_challenge)
        ntlm2_session_hash = md5.digest()[:8]
        ntlm_hash = PasswordAuthentication.ntowfv1(password.encode('utf-16le'))
        response  = PasswordAuthentication._encrypt_des_block(ntlm_hash[:7], ntlm2_session_hash)
        response += PasswordAuthentication._encrypt_des_block(ntlm_hash[7:14], ntlm2_session_hash)
        response += PasswordAuthentication._encrypt_des_block(ntlm_hash[14:], ntlm2_session_hash)

        session_hash = hashlib.new('md4')
        session_hash.update(ntlm_hash)
        hmac_context = hmac.HMAC(session_hash.digest(), hashes.MD5(), backend=default_backend())
        hmac_context.update(server_challenge + client_challenge)
        return response, hmac_context.finalize()