[wellylug] Encrypted backup recovery

[jumbophut]

On Mon, 23 Aug 2004 21:59:52 -0700, Kevin Dorne wrote:
> Does anyone know of an encryption scheme that can (to some degree) recover from read errors on the disk?
> 

On one hand, a number of the HOWTOs I've read on the web advise
against entire-volume encryption and/or compression unless it is done
in hardware.  They also advise against splitting files across media,
unless each tape/disk is recoverable on its own -- it would be a pain
to lose a whole backup set because of corruption on one volume.

On the other hand, I suppose it might be okay to encrypt each file
separately, then tar/dump those, rather than the reverse.  In the
event of corruption, you would be unlikely to lose more than a few
files, as opposed to the whole lot.  It wouldn't be terribly
efficient, and directory structures etc. would still be visible, but
the contents of files would be protected.  You could use this as a
starting point :-)

<http://wellylug.org.nz/index.php?page=articles/article-display.php&&id=10>

-- 
Tony (echo 'spend!,pocket awide' | sed 'y/acdeikospntw!, /l at omcgtjuba.phi/')