Re: [PATCH v1 0/3] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys

Hello,

On 01.04.21 12:20, Richard Weinberger wrote:

Ahmad,

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quoted

Von: "Ahmad Fatoum" [off-list ref]

quoted

I'm pretty sure with minimal changes it will work with your recent approach too.

I am using dmsetup directly in my project. I am not familiar with cryptsetup
plain. What benefits do you see with this over direct dmsetup?

cryptsetup is the de-facto standard to setup encrypted block devices.
There is a lot of existing tooling around cryptsetup already (systemd, etc..),

Do you mean systemd-cryptsetup? It looks to me like it's just a way to supply
the keyphrase. With trusted keys and a keyphrase unknown to userspace, this
won't work.

so being able to use CAAM keys for dm-crypt with cryptsetup seems natural to me.
Plain mode allows setting up dm-crypt without LUKS.

I don't (yet) see the utility of it without LUKS. Perhaps a command dump on how
to do the same I did with dmsetup, but with cryptsetup plain instead could
help me to see the benefits?

Cheers,
Ahmad

Thanks,
//richard

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