Securing and Trustworthy Blockchain-based Multi-Tenant Cloud Computing

Multi-tenant cloud computing is crucial in cloud service providers because they could gain benefit from allocating many users or tenants with the small amount of physical resource. However, multi-tenant could also cause some serious damaged due to the same location which tenant are placed. One of the problems is data leakage performing through co-resident attack from malicious tenant which result in the data to be stolen and caused business to loss the profit. Malicious tenants could modify their request or transaction for preventing anyone to trace back to them. After studying from related paper which show some implementation of Blockchain and cloud computing, we decide to use Blockchain to support cloud computing system. In order to observe and investigate in bad activity without any modification of activities, we introduce Blockchain which will help in auditing of transactions between tenants and cloud provider any provide strong integrity of transactions log. Moreover, we also integrate the Smart Contract which help on simulation on the allocation mechanism, policy checking and other functions between cloud provider and tenants for easily integrating cloud computing system on Blockchain. Our expected result would be that cloud computing could be implemented on Blockchain together with other functional features of cloud computing.