Auditing the Use of DBMS Covert Storage Channels Relevant with Transactions
朱虹, Feng, Yu-cai, Zhou Zhou, Chun · 高技术通讯：英文版 · 2002
This paper proposes the concept of transaction-type covert storage channels, which are caused by database storage resources. It also proposes that the mode of auditing those channels be based on the transactions. Next, the paper analyzes and resolves the two problems arising from auditing the use of transaction-type covert storage channels in database systems: namely, the relationship between channel variables, which are altered (or viewed) by the transaction and satisfy integrity constraints in DBMS, and database states; and the circumvention of covert storage channel audit in DBMS.