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I'm able to generate a new private key and associated public addresses using bitcoin-core, but what I really want to do is generate a new private key from a 24 word seed phrase. I'm not sure how to go about this and I have not been able to find any examples.

BIP-39 Word list: 

https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt

Current code:

var bitcore=require("bitcore-lib");
var buffer=bitcore.crypto.Random.getRandomBuffer(256);
var hash=bitcore.crypto.Hash.sha256(buffer);
var bn=bitcore.crypto.BN.fromBuffer(hash);
var pk=new bitcore.PrivateKey(bn).toWIF();
var address=new bitcore.PrivateKey(bn).toAddress()+'';

If I understand correctly I will generate a hash from 24 randomly selected words (from the BIP-39 word list) then use that to generate a private key. What are the steps and format for hashing the seed phrase?

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3
  • The 24 seed words can't be arbitrarily chosen. For examples for synthesizing seed words look at github.com/libbitcoin/libbitcoin-explorer/wiki/….
    – skaht
    Commented Mar 2, 2018 at 1:56
  • Thank you. I am developing in a Windows NodeJS environment using bitcoin-core. These examples look to be some kind of command line operation with "bx" which is not recognized as anything executable in my environment.
    – Corbin
    Commented Mar 2, 2018 at 2:40
  • At least you now have some test vector information when doing NodeJS work.
    – skaht
    Commented Mar 2, 2018 at 3:38

3 Answers 3

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https://github.com/iancoleman/bip39

"A tool for converting BIP39 mnemonic phrases to addresses and private keys."

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0

Bitcoin Core knows nothing of BIP39 seed phrases, since the developers never took those recommendations on board.

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1
  • OP was asking about the bitcore JS library, not Bitcoin Core (though seems like they were confused about that themselves).
    – Pieter Wuille
    Commented Aug 11, 2022 at 3:28
-1

Look at Example 7. There are also adjacent examples for other altcoins as well.

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1
  • Thank you. I am developing in a Windows NodeJS environment using bitcoin-core. These examples look to be some kind of command line operation with "bx" which is not recognized as anything executable in my environment.
    – Corbin
    Commented Mar 2, 2018 at 2:40

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