A remote attestation model in distributed environment
As for the limitation of static information verification in the current remote attestation models, this paper presents a novel remote dynamic attestation model named BTRAM (Behavior based Trust Remote Attestation Model) which is based on the user behavior trustworthiness and attribute-based access control. In this model, a verifier proxy is used to verify the requestor. Meanwhile, the executive process and formal description are given in this paper. Finally, a performance analysis is given to the model. Based on the dynamic behavior of the communication entities, the model can not only achieve dynamic authorization, but also overcome the complex management issue of role-based remote attestation. Using a verifier proxy to verify the trustworthiness of requestor can avoid the leakage of requestor-platform's configuration, which may cause an attack to the requestor. Taking user behavior evidence as a trusted evaluation factor makes remote attestation more trustworthy than traditional remote attestation mechanism based on platform identity and integrity.