[dm-devel] Re: Crypto API Weirdnesses

[Felipe Balbi]

On 7/31/07, Satyam Sharma <satyam at infradead.org> wrote:
> Hi,
>
>
> On Tue, 31 Jul 2007, Felipe Balbi wrote:
>
> > On 7/31/07, Akinobu Mita <akinobu.mita at gmail.com> wrote:
> > > > > "Failed to setup dm-crypt key mapping.
> > > > > Check kernel for support for the aes-cbc-essiv:sha256 cipher spec and
> > > > > verify that /dev/hda4 contains at least 133 sectors.
> > > > > Failed to read from key storage"
> > > >
> > > > Looks like a "cryptsetup" error message, not kernel's.
> > >
> > > I can't find CONFIG_DM_CRYPT in the .config.
> > > Maybe cryptsetup needs it.
> >
> > yeah... it was that... working ;-)
>
> Ugh, you should at least be checking if you've built the kernel with the
> same config options :-) Of course, if you did a simple "make oldconfig"
> but still lost some config options, then that's definitely a regression...
> (was that the case here, btw?)

yeah... I was make oldconfig'ing :-p

>
>
> > btw... why DM_CRYPT is below "Multi-Devices" menu and not in
> > "Cryptographic Options"?
>
> Well, DM_CRYPT /is/ a device-mapper target first. "Cryptographic options"
> is for _actual_ crypto code, such as algorithm implementations etc. Users
> such as encrypting file systems / IPsec / dm-crypt are better off at their
> logical places, I'd say.

Hmmm... ok... thanks for the clarification ;-)

>
>
> Satyam
>


-- 
Best Regards,

Felipe Balbi
felipebalbi at users.sourceforge.net