Network information poses great threats from malicious attacks due to the openness and virtuality of network structure. Traditional methods to ensure information security may fail when both integrity and source authentication for information are required. Based on the security of data broadcast channel, a novel Trusted Computing Model (TCM) of network security authentication is proposed to enhance the security of network information. In this model, a method of Uniform content locator security Digital Certificate (UDC), which is capable of fully and uniquely index network information, is developed. Standard of MPEG-2 Transport Streams (TS) is adopted to pack UDC data. Additionally, a UDC hashing algorithm (UHA512) is designed to compute the integrity and security of data information. Experimental results show that the proposed model is feasible and effective to network security authentication.

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With the growing and improving network services, diverse interests of users have been satisfied, and the same resources have been visited repeatedly becomes a common phenomenon. Thus, in the process of data transmission, the duplicate transfer in the large-scale network topology will inevitably lead to a huge waste of resources, which commonly exists in the campus network similar topology environment. In this paper, we based on the VC(visual C++) and MySQL software develop platform, and used three-layer-mining technology to carry out excavation on the reputation data and statistical analysis.