A Right Transfer Access Control Model of Internet of Things Based on Smart Contract

Table 1

XACML control node.

Node abbreviation	Node name	Node function
PAP	Policy administration point	Managing access authorization policies
PDP	Policy decision point	Evaluating whether the access request is legal according to the policy
PEP	Policy enforcement point	Sending the user’s request to access resources to the PDP, receiving the evaluation results of PDP, and implementing the access control policy according to the evaluation results
PIP	Policy information point	Providing access attribute information, including resource information, access object information, environment information
PRP	Policy retrieval point	Saving the policy, usually a database or file system