A Secure Workflow Model Based on the Multi-Layered State Machine
Bai Shu-ren · Computer Engineering and Science · 2005
In this paper, a secure workflow model for the multi-layered state machine is proposed based on the research of the three security properties and the state machine for workflow. The novel part of this model separates a workflow into three layers: workflow, control and data, and we analyse its execution from the viewpoints of task, event and document.Furthermore, a set of authorization functions is defined to support the multi-layered state machine which is used to manage and monitor the flow of authorizations at different layers for a secure workflow execution.