10 sats \ 0 replies \ @03352b4271 OP 6 Nov 2023 \ parent \ on: Self custody - split a 24 word seed phrase into 3 parts, as a mock multisig? bitcoin
Actually this is not Shamir's secret sharing.
Here's another quote from one of the referenced posts (https://bitcoin.stackexchange.com/questions/107380/why-is-it-bad-to-split-up-a-wallet-seed-redundantly):
"I create a wallet with a 24 word seed. I don't use Shamir's secret sharing algorithm, because I see this is widely advised against (see for example this article) and is a potential source of risk from cryptography I don't fully understand. Instead, I use a naive scheme I can perform entirely by hand where for each group of three words in the seed, I split them up like this:
So each of the three locations has 2/3 of the words, i.e. 16 words. It's easy to confirm (by experiment, if necessary) that I can reconstruct the full seed from any two of the three locations.