Research And Implementation Of Transitive Trust In Windows Environment

With the growing popularity of computer and internet, important sensitive information also is facing the increasingly serious security threats. The dissemination and destruction of malicious codes such as computer viruses, Trojan horses, spyware, and worms in network are the information security incidents which endanger the widest scope and have the most serious harm. A large-scale outbreak of the viruses always leads to huge business and economic losses of enterprises .Research shows that due to the technical limitations of security protection to the PC terminal system and the vulnerability of the system, almost all viruses, the Trojan security incidents and hacker attacks aim at the PC terminal system and infect or damage to other systems through the network, while the traditional security mechanisms can't effectively prevent such incidents from occurrence.Dynamic Multi-path trust Chain (DMPTC) is a system trusted verification and assurance mechanism based on characteristic of software type. This paper implements the test phase of loading and running dynamic application software in DMPTC. It makes the PC terminal only load and run executable codes from trustworthy sources and then builds a trusted computing platform. DMPTC can be used to resist malicious codes and help to manage and control which applications can be executed in business systems to regulate the operation of PC terminal system. This paper uses various effective ways to improve system performance in the process of testing the loading and running of the executable codes. The analysis and result of the testing show the loss of implementing DMPTC on Windows is lower than 1 %.