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Blockchain-based security and access control for BIM big data

Blockchain-based security and access control for BIM big data

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We analyzed the limitation in traditional role-based only access-control mechanism. As the number of mobile users is much larger than the number of roles, naive RBAC may not be suitable in BIM situations. We thus propose a context-aware fine-grained access control, called CaAC. We describe the functions of CaAC by formal method and present several illustrations on contexts via location-CaAC and the time-aware access control. CaAC can guarantee the access control within the same role by differentiating contexts, which is more fine-grained than current role-based only access control. We also present grouping algorithms of two models. By comparing the proposed models with traditional RBAC model, we analyze the security and feasibility. As a result of analysis, we conclude that the average efficiency is improved by 2n I (2n - p - q), and the time complexity of the proposed algorithm is 0(n).

Chapter Contents:

  • 5.1 bcBIM: a blockchain-based big data model for BIM modification audit and provenance in mobile cloud
  • 5.1.1 Introduction
  • 5.1.2 Related work
  • 5.1.3 Problem formulation
  • 5.1.3.1 System model
  • 5.1.3.2 Adversary model
  • 5.1.4 Proposed scheme
  • 5.1.4.1 Proposed basic architecture
  • 5.1.5 Example—public blockchain bcBIM
  • 5.1.6 Example—private blockchain bcBIM
  • 5.1.7 Security analysis and performance analysis
  • 5.1.7.1 Security analysis
  • 5.1.7.2 Performance analysis
  • 5.1.8 Conclusions
  • 5.2 CaACBIM: a context-aware access control model for BIM
  • 5.2.1 Introduction
  • 5.2.2 Related work
  • 5.2.3 Problem formulation
  • 5.2.3.1 System model
  • 5.2.3.2 Adversary model
  • 5.2.4 Proposed scheme
  • 5.2.4.1 Context-aware access control
  • 5.2.4.2 Proposed authorization rules
  • 5.2.4.3 Examples: location-aware or time-aware
  • 5.2.5 Security and performance analysis
  • 5.2.6 Conclusions
  • Acknowledgment
  • Data availability statement
  • References

Inspec keywords: Big Data; building information modelling; authorisation; mobile computing

Other keywords: RBAC model; BIM big data; blockchain-based security; access control mechanism; building information modeling; time-aware access control; formal method; context-aware fine-grained access control; CaAC

Subjects: Data security; Civil and mechanical engineering computing; Ubiquitous and pervasive computing

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