[ this probably should be on a more generic list than port-i386! ]

David Maxwell wrote:

> What are good choices for an algorithm that wouldn't be weakened by some
> known plaintext patterns in the input? I'm thinking particularly of 
> directories, though things like the superblock backups might provide
> a telltale as well.
> 
> Identical blocks at 0 and 32 would give a good hint - and many portions
> of the superblock's content could be guessed from the size of the 
> partition etc...

Could this be as simple to fix as using the block number as (part of?)
the IV?

Simon.
--
Simon Burge                            <simonb@wasabisystems.com>
NetBSD CDs, Support and Service:    http://www.wasabisystems.com/