Behavior-Aware Role Based Trust Management

In role based trust management, a trust domain will decide the trustworthiness of a user by assigning roles to the user according to submitted certificates. However, the userspsila trustworthiness should be different after they enforced different behaviors although being assigned the same role. A behavior-aware role based trust management model is presented in this paper. Role is extended to include variables that represent cumulative behaviors. Behavior-aware credentials are introduced to describe the trust movement policy driven by enforced behaviors. Role Reputation and domain reputation are also defined using behavior variables (BV) that represent the current trust status. The reputation-aware credentials describe the trust movement policy driven by the change of reputation. Some optimization mechanisms of implementing the model are discussed finally.