Abstract: Software protection technique now receives broad attention from all fields both at home and abroad. In this paper, license server system is put forward to control and maintain software license. Based on ACE, the LS server receives the validation message from LS clients when they login, run and exit. Thus, LS server administrates the providing software efficiently and carries out the function of software protection

Key words: ACE; Software protection; License

摘要： 软件保护技术是目前国内外各界广泛关注的领域。该文提出了一种对软件许可证进行控制，维护的License Server 系统。该系统基于ACE 环境，服务器通过判断客户端在启动、运行和退出软件时定时发送的验证消息，对所提供的应用软件进行有效管理，从而很好地达到了软件保护的功能。

关键词: ACE；软件保护；License