Research communities in cyber security vulnerability assessments: A comprehensive literature review

Trust chain, which focuses on the security in trusted computing platform, is the key technology to ensure system security. Aiming to establish the trust chain for mobile terminals, this paper proposes a trusted turing machine to formally describe the trust transitive process and construct an efficient trust chain model during the system boot time and the run time. The model consists of the following two characteristics. First, the boot code and operating system image are stored in Root of Trusted Storage. This structure provides more safety, reliability, and efficiency than that proposed by Trusted Computing Group. Second, a resource-oriented protecting scheme is designed during the system run time. A process can access specific resources on the condition that it has been granted trust property by the related verifying program. In addition, we also develop a prototype of trusted mobile terminal systems. Results show that the system boot time is shortened by 5.2s. In the meantime, the dynamic trusted mechanism executed during system run time can efficiently protect platform from malicious attack while it has little impact to system performance. The proposed model has the trust transitive property of the trust chain and can be applied to build a high efficiency trusted mobile terminal. Copyright © 2013 John Wiley & Sons, Ltd.

https://onlinelibrary.wiley.com/doi/pdf/10.1002/sec.808

Efficient trust chain model based on turing machine

Varieties of trusted computing products usually follow the mechanism of liner-style chain of trust according to the specifications of TCG. The distinct advantage is that the compatibility with the existing computing platform is preferable, while the shortcomings are obvious simultaneously. A new star-style trust model with the ability of data recovery is proposed in this paper. The model can enhance the hardware-based root of trust in platform measurement, reduce the loss of trust during transfer process, extend the border of trust flexibly, and have the ability of data backup and recovery. The security and reliability of system is much more improved. It is proved that the star-style trust model is much better than the liner-style trust model in trust transfer and boundary extending etc. using formal methods in this paper. We illuminate the design and implementation of a kind of trusted PDA acting on star-style trust model.

A star-style trust model with the ability of data recovery for trusted computing platform

To enhance the capacity of counteracting malicious attacks for electric cloud computing systems, and reduce security risks, this paper proposes a network security protection technology based on the trusted computing technology, which embeds the trusted computing chip into electric cloud terminals, uses the integrity measurement technology and the trust chain transmission technology from the trusted computing framework to ensure electric cloud terminals secure and trustable. The construction of the trusted electric private cloud makes trusted electric cloud terminals secure access, and improves the active defense ability of electric cloud systems in the case of malicious attacks.

Design of Electric Trusted Cloud Terminal Based on Trusted Computing

Trust measurement, which is the basis of “measurement, storage, and reporting” of trusted computing, is still lack of mathematical theory and has few applications in a real-time environment thus far. The difficulty lies in three points. One is how to establish a general mathematical model that can cover different mainstream definitions of “trust”; the second is how to build a runtime trust measurement theory based on the established mathematical model; and the third is how to map the above the model and theory to real information systems, and therefore form a practical real-time measurement method. To address the above issues, a runtime software trust measurement approach is proposed. Initially, a noninterference model is leveraged to explain different mainstream definitions of trust, indicating that noninterference model can be an appropriate option of general mathematical model for trusted computing. Next, a noninterference model-based real-time trust measurement theory is presented. In the proposed trust measurement theory, a system call is processed as an atomic action, and the sequence of system calls is constructed as the real behaivior of a process. Note that every system call belongs to a security domain, and different security domains are of noninterference with each other. Therefore, after obtaining a real behavior α, the theoretically expected behavior β can be calculated based on the noninterference relations between security domains to which system calls in α belong. Once obtaining α and β, the trust of a process can be measured by determining whether two behaivors α and β deviates. Finally, a trust measurement algorithm is given. The algorithm can determine whether a process trust or not, i.e., whether the real behavior α and the theoretically expected behavior β deviates, within the time complexity of O(1). The proposed theory is also applied into real information system, and experimental results show that the proposed approach is effective and efficient.

Real-time Trust Measurement of Software: Behavior Trust Analysis Approach Based on Noninterference

Security Analysis on Trust Chain of Trusted Computing Platform: Security Analysis on Trust Chain of Trusted Computing Platform

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Security Analysis on Trust Chain of Trusted Computing Platform: Security Analysis on Trust Chain of Trusted Computing Platform