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RTBAC: A new approach for securing Electronic Healthcare System

Electronic Healthcare System (EHS) consist of different types of sensitive patient medical records and assets for the healthcare industry. These data and resources are accessed by different stakeholder for different purposes. The vulnerability has been increased in the information and resources due to the remote locality of the healthcare system. Several security mechanisms have been implemented to provide security in the healthcare system. The Role Based Access control (RBAC) model is one of the security mechanism implemented in the EHS. During the access time, the changing of user behavior is also an important security requirement. But, due to the static nature of the RBAC model, this security requirement is not fulfilled. The integration of trust into the RBAC model fulfill the above-mentioned security requirement. So, the paper proposed Role and Trust-Based Access Control (RTBAC) model for controlling the access into the EHS. The RTBAC model consists of role and trust of the stakeholder to ensure the authorized accesses. The proposed Access Control Model (ACM) is flexible and supports dynamic access rights on the basis of the applicant’s degree of trust.