On Tue, 2002-01-22 at 19:02, Michael Zhu wrote: > Hello, everyone, in my loop device I want to use > different keys to en/decrypt the file contents and the > metadata of directories/file names information. But > how can I differentiate these two types of data in the > loop device? The loop device just cares about the > block. But the metadata of directories/file names > information is just the file system information. Any > idea about this? Thanks in advance. Mmmh ... I don't really see the point, but perhaps you should look at stegfs (sorry, don't remember the URL) - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/