By Man Ho Au, Barbara Carminati, C.-C. Jay Kuo (eds.)

This ebook constitutes the court cases of the eighth foreign convention on community and procedure safety, NSS 2014, held in Xi'an, China, in October 2014. The 35 revised complete papers and 12 revised brief papers awarded have been rigorously reviewed and chosen from a hundred and fifty five preliminary submissions. The papers are prepared in topical sections on cloud computing, entry keep watch over, community safeguard, safety research, public key cryptography, procedure safeguard, privacy-preserving platforms and biometrics, and key administration and distribution.

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Additional info for Network and System Security: 8th International Conference, NSS 2014, Xi’an, China, October 15-17, 2014, Proceedings

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Proof. The security of the group key generation indicates that there is no adversary that can get enough information to generate a valid group secret key. This proof is straight-forward. Our method of generating group public-secret key pair derives from the dynamic asymmetric group key agreement scheme [33]. If the mobile users in group are honest, the correctness of the group key agreement scheme ensures to generate a shared group secret key. According to the security proof in [35], the group public-secret key pair is secure if Diffie-Hellman key agreement scheme is secure, whose security can be reduced to CDH assumption.

We identify the three major types of services within this architecture as follows: 2 While provenance data can capture access requests that are not granted, for simplicity, we assume only granted accesses are stored in provenance data. Adopting Provenance-Based Access Control in OpenStack Cloud IaaS 19 Cloud Service (CS) essentially provides a particular IaaS service to client tenants. The types of services include computing (management of virtual resources), authorization, virtual networks, and so on.

2 Implementation and Evaluation In this section, we describe and discuss our implementation of a proof-of-concept prototype that realize the above proposed architecture for enabling a PBACenabled authorization service within the OpenStack platform. 4 A similar process can 4 An implementation of the provenance service is also available. However, since the emphasis is more on the PBAC aspect, we do not discuss the details of this component and the associated evaluation. Henceforth, Figure 6 does not depict the PS components.

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