Integration of a Cryptographic File System and Access Control.

The importance of kernel-level security mechanisms such as a file system and access control has been increasingly emphasized as weaknesses in user-level applications. However, when using only access control, including role-based access control (RBAC), a system is vulnerable to a low-level or physical attack. In addition, when using only a cryptographic file system, a system also has a weakness that it is unable to protect itself. To overcome these vulnerabilities, we integrated a cryptographic file system into the access control, and developed a prototype. [ABSTRACT FROM AUTHOR]