Meanwhile, with fast development of network and communication Technology and emerging demands of multimedia information, IP-based network infrastructure is used for multimedia transport.
与此同时，网络技术飞速发展，多媒体信息需求急速增加，基于IP的网络架构日益成为作为信息传输的媒介。
In recent years, with the fast development of communication technology in computer network, both the new chances and challenges have been created for protecting the digital information.
近年来，计算机网络通信技术飞速发展，为数字信息保护技术带来了新的机遇，同时也带来了新的挑战。
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