Trusted computing is the new trend of information security today. This paper surveys the theory and technology of trusted computing. The development history of trusted computing, and the development of trusted computing in China are introduced in this paper,and then it analyzes some problems of trusted computing at present which are delay in theory research, some key technologies to be developed and lack of trusted software system. Some fields are worthy to be explored on are pointed out including key technology, basic theory and application in trusted computing.
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