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A Design of Trusted Operating System Based on Linux

Computer technology has developed rapidly, the same time it brings more opportunities for information theft, tamper and destruction. Information security has become a research focus. The security of operating system, as the base of information system, is particularly important. With the developing of 40 years, the security operating system has made certain achievements. However, it still exist some problems. Trusted operating system which is based on trusted computing can help solve the problems. A design process of trusted operating system based on linux was proposed, and also its architecture was given. A double-key authentication was given as an application example of the trusted operating system.