雲端系統服務層級協議違反之自動賠償機制的研究

In the development of Cloud computing system, establishing trust and mutual non-repudiation becomes one of the most important research topics. Some organizations, governments, companies, and users do not dare to use the services from Cloud system because they concern the security of the Cloud system. If we can successfully establish mutual non-repudiation and trust in the Cloud system, we can increase the popular of the Cloud system. The services provided by the Cloud system may not be able to satisfy the service-level agreement (SLA). The current existing indemnification mechanism is similar to have the player act as the referee. That is, the service provider determines if itself violates the SLA. In this project, we would like to propose and implement an automatic indemnification model for Cloud system. Whenever the SLA is violated, the client can take objection to the Cloud system by appealing to a smart contract in a public blockchain. In case the objection is successful, some cryptocurrencies will be transferred to the client automatically.