registry team mailing list archive

[David Santamaría Rogado <244480@xxxxxxxxxxxxxxxxxx>]

There is a comment in wikipedia's discussion about this:
http://en.wikipedia.org/wiki/Talk:Disk_encryption_theory#Issues_with_XTS

"Issues with XTS

There is also an issue about the size of the filesystem encrypted with
the support of XTS. This is discussed here:
http://lists.alioth.debian.org/pipermail/pkg-cryptsetup-
devel/2008-September/002265.html —Preceding unsigned comment added by
62.2.182.207 (talk) 19:40, 1 April 2010 (UTC)

    This is a misconception, since it does not apply to large
filesystems (containing many data units/sectors, which are encrypted
totally indepently), but to very large single data units, i.e.: The size
of any single data unit should not exceed 270 bytes. The data unit size
for a typical filesystem is between 512 and 64536 bytes only
(29/216).93.205.111.251 (talk) 15:37, 2 April 2010 (UTC) "

What is the real situation? Is a misunderstood of the XTS spec like the
XEX spec when doing XTS?

If yes, the XTS crypt of very large volumes warning is not necessary.

-- 
support AES-XTS mode
https://bugs.launchpad.net/bugs/244480
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