bip39-sss-js-sdk

Split BIP39 mnemonics using Shamir's Secret Sharing Scheme Integrated 'bip39' lib

Guild

0. To generate mnemonic with 'bip39' lib.

   import { generateTwelveWordsMnemonic } from 'bip39-sss-js-sdk';
   
   const generated_mnemonic = generateTwelveWordsMnemonic();

1. To generate M/N mnemonic shares

   To generate M shares and require N to recover the mnemonic, (N >= M/2 + 1).

   Accepts a BIP39 mnemonic and returns a Shares map, in which the keys are the share id's, and the values are the BIP39 mnemonics.

   import { splitMnemonic } from "bip39-sss-js-sdk"
   
   splitMnemonic(example_mnemonic, 3, 2); // to split 3 shares and requeire 2 share to recover the mnemonic
   splitMnemonic(example_mnemonic, 5, 3);
   splitMnemonic(example_mnemonic, m, n);

2. To recover mnemonic

   import { recoverMnemonic } from "bip39-sss-js-sdk"
   
   recoverMnemonic(split_1_3_5_for_generated_5_3) // use the 1st, 3rd, 5th to recover the orginal/real mnemonic

3. To get address or private key with 'web3'

   import { getEntropyByMnemonic } from 'bip39-sss-js-sdk';
   
   web3.eth.accounts.create(getEntropyByMnemonic(generated_mnemonic)) // to get account with web3

Reference

• https://github.com/bitcoinjs/bip39
• https://medium.com/keylesstech/a-beginners-guide-to-shamir-s-secret-sharing-e864efbf3648