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SubjectRe: 2.4 and cryptofs on raid1 - what will be cached and how many times
On Tue, 4 March 2003 13:30:20 +0400, Vlad Harchev wrote:
>
> Sorry for confusion - I meant loopback-based crypto filesystem - e.g. loop-aes
> based (loop-aes.sourceforge.net) or CryptoAPI-based (www.kerneli.org) - both
> are loopback-based filesystem (one has to call losetup(8) to point out chipher,
> a password..)

Loopback with encryption is not the same as a crypto filesystem.
Loopback encryption works transparently with any (non-)crypto fs.

A potential attacker can use this to look for the ext2 superblock,
which gives him the same data both encrypted an unencrypted. A real
cryptofs would go through great pains to take such advantages away.

Jörn

--
Invincibility is in oneself, vulnerability is in the opponent.
-- Sun Tzu
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