Komprimovany a sifrovany image

[luc]

Dne út 25. dubna 2006 12:46 luc napsal(a):
> Dne po 24. dubna 2006 16:55 Martin Špirk napsal(a):
> > Zdravim,
> >
> > hledam nejaky zpusob, jak za ucelem zalohovani vyrobit nejaky
> > komprimovany a sifrovany image meho disku.
> > Nasel jsem losetup+crypto, squashfs i cramfs, kazde zvlast uz umim
> > pouzit, ale nejak jsem nezjistil jestli jde spojit obe tyhle
> > vlastnosti dohromady. Nebo je na to jeste nejaky jiny fs?
> >
> > 	Diky, Martin
>
> Dobre a co tohle ...
>
>
> Seriously:
> Transparent compression and(or) encryption (optionally) in reiser4
> are implemented via cryptcompress object plugin. Whats hot:
>
> - Support of variable cluster size ((1, 2, 4, 8,..) * PAGE_SIZE)
> via copy on clustering. The last means that page cluster will be
> assembled into united flow before compression, and output stream of
> decompression algorithm will be split into pages. Cluster size is an
> attribute of cryptcompress files which means a size of maximal chunk
> of data that can be passed to compression algorithm. This is required
> attribute for each cryptcompress object, each cluster is compressed
> and (or) encrypted independently. This allows to apply per cluster
> various stream modes for encryption, which are also represented by
> reiser4 stream plugins.
>
>
> vice
> ...http://www.ussg.iu.edu/hypermail/linux/kernel/0401.3/0799.html
>
ikdyz uz je to asi mimo co chtel autor, tak pro zajimavost  ....

zde je benchmark http://www.namesys.com/benchmarks.html a je to ten 
posledny (nejnovejsi)... ktery provadi porovnani ext3 oproti reiser4 s 
jakymsi "cryptocompress" patchem

-- 
luc
Linux 2.6.12-17mdk-i686-up-4GB Intel(R) Pentium(R) M processor 2.00GHz