You can take an existing secret key and Shamir Secret Share it, then use those shares for FROST signing. We will feature this for loading an existing Nostr key into Frostsnap devices.
You could also use an existing key to seed your secret polynomial in FROST key generation. You'll still need to backup the inputs you receive during key generation such that you can recover this secret share. Perhaps this can be a single shared transcript.
https://github.com/BlockstreamResearch/bip-frost-dkg/issues/6
Or bring your own key in another sense?
nick
npub1j8…g26k2
2024-02-11 13:09:21
in reply to nevent1q…99ck
Author Public Key
npub1j8d6h8mzvc8f2fvysrf09nlkmn7m2ylj32zl5na4tm5e8fd5dqysrg26k2Published at
2024-02-11 13:09:21Event JSON
{
"id": "57bb09ac9941ae15b31d6c8380ee1368bdc54a6955e52ca6d0206d48894c0b6d",
"pubkey": "91dbab9f62660e95258480d2f2cff6dcfdb513f28a85fa4fb55ee993a5b46809",
"created_at": 1707656961,
"kind": 1,
"tags": [
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"root"
],
[
"p",
"91dbab9f62660e95258480d2f2cff6dcfdb513f28a85fa4fb55ee993a5b46809",
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[
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[
"p",
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]
],
"content": "You can take an existing secret key and Shamir Secret Share it, then use those shares for FROST signing. We will feature this for loading an existing Nostr key into Frostsnap devices.\n\nYou could also use an existing key to seed your secret polynomial in FROST key generation. You'll still need to backup the inputs you receive during key generation such that you can recover this secret share. Perhaps this can be a single shared transcript.\nhttps://github.com/BlockstreamResearch/bip-frost-dkg/issues/6\nOr bring your own key in another sense?",
"sig": "4162d9b422c4abdd2494d3d4db4bde6285ef1e63e8a6295717425552a8005f0aa05d353cf3db7e54b11c75917b112da2dc8a610b817230414dee8e5e2ebafd75"
}