The Structure and Agency Policy Language (SAPL) for Attribute Stream-Based Access Control (ASBAC)

In-Memory Policy Indexing for Policy Retrieval Points in Attribute-Based Access Control

“…Further, ALFA [20] is a semantically identical simplified syntax for expressing XACML policies. A new policy language is SAPL [4] implements attribute stream-based access control (ASBAC) [3], an extension of ABAC focusing on publish-subscribe communication models capable of processing streaming attributes (e.g., IoT data) and adds features beyond the expressiveness of XACML. Even though, in the case of SAPL a PDP processes decision subscriptions and not just decision requests, the problem discussed in this paper is independent of this difference.…”