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Aimed at the problem of synchronizing duplication in mobile database, this paper introduced the technology of multi-agent and transaction result set into synchronizing duplication of transaction level, and provided the model of synchronizing duplication in mobile database based on the technology of multi-agent. It compared with the existing models, this model had the following characteristics:a) improving the scalability of system; b) reducing the usage of mobile devices and network resources; c) proposing a series of synchronization strategy aiming at the harsh network environment. Experimental results demonstrate the excellent performance of the model and the availability in harsh network environment. [ABSTRACT FROM AUTHOR]

In order to improve efficiency flaws of TLS protocol such as frequent interaction times and high computation overload, through the analysis and research on the protocol, this paper proposed a new ECC-based protocol in which RSA was substituted by ECC. It improved the new protocol performance. Through cache handshake parameters, the number of shake hands interaction was less. It used SVO logic to analyze ECC-based protocol, and the result shows that it is secure. The simulation experiment and comparison with original protocol show that with the increased level of security, the new ECC-based protocol is more predominant. [ABSTRACT FROM AUTHOR]

Virtual machine security issues have been the focus of attention. The permissions of traditional management domain DomO are too large, so that the user's privacy is threatened. At the same time, once the attacker compromises DomO, it can threaten all the users. This paper presented a separate privilege virtual machine security model based on mutual trust (MTSP). It split DomO's privileges into three parts: the device driver, forming the isolated driver domain; the operations of the user's privacy, forming a DomU management domain; remaining forming Thin DomO. It achieved the startup of the system by the VMM and user together restricting each other. Combined with the model, the prototype system was implemented and security analysis and performance testing were done. It can protect the users' privacy, apportion the risk and isolate fault. [ABSTRACT FROM AUTHOR]