现阶段计算机网络技术快速发展,其应用范围逐渐扩大并逐渐改变人们生活、工作方式,人们对其依赖程度也在逐渐提高。但计算机网络技术面临一个问题,就是计算机网络安全问题,为了应对人们研究出数据加密技术。有鉴于此,本文中笔者以计算机网络安全为切入点,分析数据加密技术的应用,确保计算机网络安全。 At this stage of the rapid development of computer network technology, its application gradually expanded and gradually change people’s lives and working methods, people are gradually increasing their dependence. However, computer network technology faces a problem, that is, computer network security issues, in response to people to study data encryption technology. In view of this, in this paper, the author of the computer network security as the starting point, analyze the application of data encryption technology to ensure computer network security.