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Trusted computing technology, as a quickly developing technology in recent years, is helpful to improve the computer security and build a trusted computing environment for not only PC system but also distributed computing system. The core of trusted computing technology is cryptology. The trusted computing hardware provided a trusted root for upper layer applications and a trusted software interface is used to communicate with the trusted hardware. In this paper we analyze the key and credential mechanism which is two basic aspects in the cryptology application of trusted computing. The protection for private keys is based on the trusted computing platform with the trusted platform module. We give an example application to illustrate that the TPM enabled protection for key and credential can improve the security of distributed computer system.

This paper discussed a security scheme of mobile agent on trusted computing platform. The security architecture of mobile agent based on trusted measurement was constructed by using the trusted measurement policy and trust chain mechanism provided by trusted computing platform. Furthermore, the mathematic model of trust relationship was also constructed among mobile agent platforms based on trusted measurement in the distributed computing environment of mobile agent. Then the experimental numerical value simulation and test validation were processed.