How Create Bitcoin wallet from a private key works?

Question

I'm trying to understand how i can create a pair of bitcoin private key and public key and import them in electrum wallet

1 try with: https://github.com/Destiner/blocksmith

for example:

 import blocksmith
 
 kg = blocksmith.KeyGenerator()

 kg.seed_input("(/sgroxa)n;[&1ox7fioqg4*v8")
 #seed is the private key ?

 key = kg.generate_key()
 #returned key : 7e659f56d6f20a64258b65445c825e62edf6b89219d4b3eb3ebec6ecb8f62859
 #this key is a formated "(/sgroxa)n;[&1ox7fioqg4*v8" version  ?

 address = blocksmith.BitcoinWallet.generate_address(key)
 #returned address : 112qrCJdHgudHmsKKKwvj3AM3aN2eN9wpP

how to import this in electrum wallet?

---

2 try: https://github.com/mcdallas/cryptotools

#python38 setup.py install

import os
os.environ['CRYPTOTOOLS_NETWORK'] = 'main'

from cryptotools.BTC import PrivateKey, Address

#private = PrivateKey.random()

mystring='supersecret'.encode('utf-8')
mystring2 = mystring.hex()
private = PrivateKey.from_hex(mystring2)
#private = PrivateKey.random()
print("PRIVATE NOR: "+str(mystring))
print("PRIVATE HEX: "+mystring2)
#private = PrivateKey.from_wif('yourwifhere')

#and then to get the hex representation use private.hex() of private.wif()


public = private.to_public()
print("PUBLIC NOR: "+str(public))
print("PUBLIC HEX: "+public.hex())
#public.hex(compressed=True)

addrp2pkh = public.to_address('P2PKH')
print("ADDR addrp2pkh: "+addrp2pkh)
#'16B2Ghyu5C1CofKfXF2Zi9JycqaAyaE8cd'
addrp2wpkh = public.to_address('P2WPKH')
print("ADDR addrp2wpkh: "+addrp2wpkh)

return

PRIVATE NOR: b'supersecret'
PRIVATE HEX: 7375706572736563726574
PUBLIC NOR: PublicKey(8168986507460029097250523306678031295706525425592031410379320603875628502471, 68217540890844357698499484021605168903182743958311172870030299256854130530932)
PUBLIC HEX: 04120f7b85fbc8d10d7564fe6dcb99291661014e87d2579068448f8d0b54bf4dc796d1c2869226dfb3609808158d1c4cec9a3a1ebee12994a2779e1d2dac851a74
ADDR addrp2pkh: 15nTqJEGWZg9DTjj7KSjwwKf3xHhpSiQyQ
ADDR addrp2wpkh: bc1q3pv43a0tujsy9kp526su2fz93at70demcj4phw

how to import this in electrum wallet?

i cant see how i cant key my pub key for import it into electrum wallet for example? Cant you help to understand my mistake or if i confuse something?

Thanks

Answer 1

You have two choices in Electrum:

1. Importing a HD wallet (requires a seed, or mnemonic)

2. Importing a single address (requires the keypair for that address)

Importing a HD wallet

Using the cryptotools library from your second example:

from cryptotools.BTC import Xprv
private = Xprv.from_seed("adfadaaaaaaaaaaaaaaaaaaaaaaaaafa")
# private = Xprv.from_mnemonic(...)
print(private.encode()) 
# 'xprv9s21ZrQH143K3RYhJCmDhwpJ4cpXxj7JfUSChYD9rwyZqkTtKb5Y1sc3SzcwgFZ6EiMC38EdQJUKSmc2oni98m3XA8dpnXaMRd8GEQxW6KA'

Then in Electrum (from File > New/Restore):

and finish.

Importing a single addresses into Electrum using a key pair

To import an address, Electrum expects users to provide a private key in the Wallet Import Format but also prefixed with the type of address (script type: "p2pkh", "p2wpkh", ...) that you wish to recover.

from cryptotools.BTC import generate_keypair
private, public = generate_keypair()

wif = private.wif(compressed=True)
print(wif) 
# 'KwcQEum4qYHcfFyWYKsQoRccgnPhhAx1n4b6LfzZVcNA5Eqt8AXP'

Then

Pasting KwcQEum4qYHcfFyWYKsQoRccgnPhhAx1n4b6LfzZVcNA5Eqt8AXP into the Electrum import dialog without a script type in front of it, will default to 'P2PKH', and will import a legacy address (starts with a 1 ).

If you are generating a wallet from scratch, you are free to pick any script type you like, 'P2WPKH' being the newest type in use ( bc1 addresses), however if you were actually importing an existing wallet, you would need to make sure this prefix corresponds with the script type that has funds in it.