Splitting BIP-0039 Mnemonic

• slips

  90 1,450 9.0 Markdown

  SatoshiLabs Improvement Proposals

  

I've looked into the Shamir Secret Sharing and its implementation as SLIP-0039. However, it seems the implementation isn't widely natively supported (just with Trezor Model T). It seems possible to convert the BIP-0039 mnemonic to SLIP-0039 but you need a separate software to do this and can't do it manually (I don't want to enter the mnemonic on a potentially compromised device).

• Research

  16 112 8.7 Mathematica

  Blockchain Commons Research papers (by BlockchainCommons)

  

Please see the discussion here: https://www.reddit.com/r/ledgerwallet/comments/ibkls4/does_ledger_have_plans_to_implement_shamir_secret/ Maybe ask here if the Ledger developers nicely if they still plan to implement Shamir's Secret Sharing, If Ledger do not implement Shamir's Secret Sharing (e.g. SSKR) then maybe consider purchasing a Trezor which implements SLIP-39. Bear in mind that SLIP-39 is not round-trip compatible with BIP-39.

• InfluxDB

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• seedtool-cli

  7 25 5.1 C++

  Cryptographic Seed Tool for the command line

  

If a Shamir's Secret Sharing solution is not implemented on Ledger anytime soon then seedtool-cli is available friom Blockchain Commons which can convert your BIP-39 recovery phrase to SSKR (BCR-0011) and vice versa e.g, the following command generates SSKR shares: with k-of-n threshold 2-of-3:

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