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    SubjectRe: Crypto API Weirdnesses
    Hi,


    On Tue, 31 Jul 2007, Felipe Balbi wrote:

    > On 7/31/07, Akinobu Mita <akinobu.mita@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?)


    > 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.


    Satyam
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