[core] COSE Implementations

[Hannes Tschofenig]

Hi all,

At the end of the SUIT WG meeting the chairs asked whether those working (or interested in contributing) a COSE implementation in C with an embedded crypto library could step forward.

Nobody showed up. This may probably be due to the overlap of the SUIT and the CORE meeting slots.

I am wondering whether some folks here are working on an embedded COSE implementation in C they are willing to share. Given that COSE is being promoted in many drafts in CORE and in ACE I would be surprised if there is no implementation work going on.

Ciao
Hannes

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[Ludwig Seitz]

Post by Hannes Tschofenig
Hi all,
At the end of the SUIT WG meeting the chairs asked whether those working
(or interested in contributing) a COSE implementation in C with an
embedded crypto library could step forward.
Nobody showed up. This may probably be due to the overlap of the SUIT
and the CORE meeting slots.
I am wondering whether some folks here are working on an embedded COSE
implementation in C they are willing to share. Given that COSE is being
promoted in many drafts in CORE and in ACE I would be surprised if there
is no implementation work going on.
Ciao
Hannes

Hannes,

I think part of the problem is that in the embedded space people tend to
implement only the parts they need and hardcode most of the moving parts
to the tiny subset of options they support.

You can find some code here:
https://github.com/Gunzter/contiki-ng/blob/oscore_dev/os/net/app-layer/oscore/cose.c

that does a limited subset of Encrypt0

/Ludwig

[Olaf Bergmann]

Hannes,

Post by Hannes Tschofenig
I am wondering whether some folks here are working on an embedded COSE
implementation in C they are willing to share. Given that COSE is
being promoted in many drafts in CORE and in ACE I would be surprised
if there is no implementation work going on.

I started an implementation for the ACE DTLS profile work but plan to
extend that. Will be open-source soon (i.e., days, not months).

Grüße
Olaf