I’ve been mentally trying to come up with some form of username/password scheme. But will probably have to be sometime next year I can try working on something like that.
Discussion
I've been working on an addon for e-commerce platforms where merchants will be able to hold a key shard for customers who convert their accounts to Nostr and choose to enable recovery. I've definitely found it tricky for a reliable/secure solution that will work across different platforms.
UPlanet is generating such "Trust Tier" keys using libsodium (salt/pepper) + ssss (2/3) key split
This junction allows 3 x 1/3 relational web of trust between user, admin and software. Then user only needs 1/3 of its key and benefit from "key delegation for distributed computation" run by ipfs swarm relays...