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Generate private key from a bip-39 seed phrase?

Started by Bitcoin, Mar 30, 2022, 05:37 am

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Bitcoin

Generate private key from a bip-39 seed phrase?

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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