SSKR

[ChristopherA]

At https://darkcrystal.pw/choosing-sss-implementation/#implementations-considered you say:

‘BlockchainCommons/BC-SLIP39’ is another C implementation of SLIP39. It is a complete re-write of Sprenkles' library. It is actively developed but we feel it is not mature enough - the initial commit was made in March 2020.

We ended up not supporting SLIP39 because of a number of issues, but it's replacement, SSKR, has been active and is getting more implementations as well as some important airgap approaches. See https://github.com/BlockchainCommons/crypto-commons#sskr for overview and video.

In particular, one of our patrons paid for a security review by ROS of our bc-shamir & bc-sskr c-libraries — here is the review and our response to the review.

SSKR is implemented in both command-line and iOS/Mac implementations. One of our next projects is create a CBOR format that leverages SSKR for social recovery of very large objects that can't be secured by Daan Sprenkel's code. SSKR is compatible with QR-based airgap & UR-based torgap recovery now, and we have a QR-based airgap approach that allows for animated QRs for these larger objects. It will also be compatible to offer VSS & Schnorr multisig recovery approaches in the future.

I don't know where you are in your implementation but if you are interested in joining our approaches, let us know.

/cc @wolfmcnally

[wolfmcnally]

RAEBNC