On Tue, Jul 27, 2010 at 08:59:24PM +0200, Christoph Anton Mitterer wrote: > On Tue, 2010-07-27 at 17:55 +0200, Milan Broz wrote: > > I tried to not mix that XTS/XEX 1TB problem with plain IV explanation, > > so it should read "1TB data limit is different problem not related > > to plain/plain64 IV limit" > > (I changed subject to mention IV only - but forgot to mention it.) > > > > Sorry for confusion:-) > No problem,.. but if there is another problem,... which means one cannot > have >1TB (Rogaway 2004 mentioned by Mario),... we should add that to > the FAQ (that people should not create larger devices), and perhaps give > a warning when doing so... First, this is a soft limit, and it becomes a real concern at around 1000TB. And second, it affects all ciphers with 128 bit block size, as far as I understand the issue, and hence is not anything specific for our case. So, no, not an FAQ item IMO. Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@xxxxxxxxxxx GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans If it's in the news, don't worry about it. The very definition of "news" is "something that hardly ever happens." -- Bruce Schneier _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
