Restarting PSARC/2007/001 lofi(7d) crypto support

[Alok Aggarwal]

On Tue, 18 Dec 2007, Darren J Moffat wrote:

> The updated spec and supporting material is in the materials/ subdir.
> The original materials have moved to materials.orig.
>
> The updated spec covers how this will "coexist" with the recently added
> compression support and how fleshes out the ondisk format.

I can't seem to find a section that specifies 
exactly what the interaction between the
encryption support and the compression support
will look like.

The lofiadm(1M) man page suggests that a new
field "Encrypted" is being added to the display
output. It seems it would be better to not add
this field but rather extend the "Options" field
that was recently added with the compression
support to indicate whether a file is encrypted
and with which algorithm. Also, adding the "Encrypted"
field as the second field of the display output is 
likely to break existing scripts.

The lofi(7D) man page indicates that the encryption
metadata isn't stored with or in the lofi image - it
looks like this is leftover from the original case
materials.

Alok