Monday, November 4, 2024

bitcoin core – Why are the outcomes of BTC message signature carried out in Python totally different from these on electrum?

from bit import Key
from bit.format import verify_sig
import base64
from hashlib import sha256

# Use WIF format personal key
wif_private_key = 'Kxb19KFrrqrmT79bvG4tnKibVcgppavcvjkP1iBGGjnH787H39QG'
key = Key(wif_private_key)

# Message to be signed
message=""'okay 666'''
message_bytes = message.encode('utf-8')

# Compute SHA-256 hash of the message
message_hash = sha256(message_bytes).digest()

# Signal the hash of the message
signature_bytes = key.signal(message_hash)

# Convert the signature to Base64 encoding
signature_base64 = base64.b64encode(signature_bytes).decode('utf-8')
print(f'Signature (Base64): {signature_base64}')

# Confirm the signature
# Decode the precise Base64 encoded signature
signature_bytes = base64.b64decode(signature_base64)
is_valid = verify_sig(signature_bytes, message_hash, key.public_key)
print(f'Is the signature legitimate? {is_valid}')

python result’s
MEUCIQDGOkOlG2DMAcZ4/nvsUNi4ZxbTKGJFIx0h76QkBLVmqgIgd2McFwd+/ZHxCcktZffZS762gA5o8oRM5u4tqORp6HA=

The electrum result’s
IDVIF+7m9nKMvxAKo88PNwLJeg8H2MA9WoDZgjDCs0boKyuFdqWnTSCuAobVmzJr+NzqlCg180yvc5vsfsVeBjA=

After a number of verifications, electrum is right.

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