Abstract
A building information model (BIM) is of upmost importance with a full life-time cycle in architecture engineering and construction industry. Smart construction relies on BIM to manipulate information flow, data flow, and management flow. Currently, BIM has been explored mainly for information construction and utilization, but there exist few works concerning information security, e.g., audits of critical models and exposure of sensitive models. Moreover, few BIM systems have been proposed to make use of new computing paradigms, such as mobile cloud computing, blockchain and Internet of Things. In this paper, we propose a Context-aware Access Control (CaAC) model for BIM systems on mobile cloud architectures. BIM data can be confidentially accessed according to contexts in a fine-grained manner. We describe functions of CaAC formally by illustrating location-aware access control and time-aware access control. CaAC model can outperform role-based access control for preventing BIM data leakage by distinguishing contexts. In addition, grouping algorithms are also presented for flexibility, in which basic model (user grouping based on user role permissions) and advanced model (user grouping based on user requests) are differentiated. Compared with the traditional role-based access control model, security and feasibility of CaAC are remarkably improved by distinguishing an identical role with multiple contexts. The average efficiency is improved by 2 n / ( 2 n - p - q ) , and time complexity is O ( n ) .
Highlights
building information model (BIM) (Building Information Model) has been envisioned as a key approach for smart construction, such as construction automation, construction supply chain management, building information exchange, and building data sharing [1,2]
To tackle the above challenges, in this paper, we propose a Context-aware access control model called Context-aware Access Control (CaAC) for BIM data auditing in mobile cloud BIM architecture
We propose a Context-aware Access Control mechanism (CaAC) to guarantee pervasive access control in mobile cloud paradigm that provides scalable storage and fast retrieval
Summary
BIM (Building Information Model) has been envisioned as a key approach for smart construction, such as construction automation, construction supply chain management, building information exchange, and building data sharing [1,2]. Mobile cloud architecture allows BIM information to be pervasively accessible, and is scalable for a large number of users. Consider entities in a construction project as follows: owners of a bank building are members of a bank company; designers are engineers in design institute; contractors are managers in contracting companies; and builders are workers of construction companies They may access BIM information with different privileges. To tackle the above challenges, in this paper, we propose a Context-aware access control model called CaAC for BIM data auditing in mobile cloud BIM architecture. We propose a Context-aware Access Control mechanism (CaAC) to guarantee pervasive access control in mobile cloud paradigm that provides scalable storage and fast retrieval.
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