关键词: 网络编码，网络安全，典型集，哈希函数，云计算

Abstract: In recent years,network coding has emerged some exciting future because of its smart technology. However,in order to let network coding become popular in the Internet, its security problem must be solved. Firstly, a wide range of attacks were revealed based on our systematic analysis of the components of these frameworks vulnerabilities. Secondly, this paper gave one proposal for ACK attacks and coding attacks based on Typical Set, Hash Functions and Markov model. Thirdly, one thinking named as Computing Network, which integrates Cloud Computing with Network Coding, was proposed. Finally, the open issues and challenges for network coding referring to both theory and applicalion in near future were proposed.

Key words: Network coding, Network security, Typical set, Hash function, Cloud computing