Extended Cryptographic File System

Distributed file systems provide a convenient target to attackers, who may be able to observe and modify network traffic or to gain access to a central file server. Several existing systems address this problem by transparently encrypting all files; however, this hinders sharing of files meant to be public. File systems that support encryption on a file-by-file basis often fail to protect users from malicious modifications to their public data. In this paper, we discuss ECFS, an extended...