University of Tokushima
In emerging service federations, maintaining security is a key issue for the federation to be widely accepted. Online trust is proposed and built to solve part of this problem. If online trust is established in a federation, sensitive data can be exchanged according to a level for handling the data. Today, governing online trust is intensively discussed. There are provided standard ways of defining policies related to the governance. A federation provides online trust, and its participants consume the trust for securely handling data.