Topic: From private key to address [Facing problem] (Read 306 times)

02 79BE667E F9DCBBAC 55A06295 CE870B07 029BFCDB 2DCE28D9 59F2815B 16F81798

import binascii, base58, hashlib

def public_key_to_address(public_key):
        bin = binascii.unhexlify(public_key)

        #Step 1: Create hash of public key:
        hash_of_public_key  = hashlib.sha256(bin).digest()

        #Step 2: Calculate RIPEMD-160 of the public key:
        r = hashlib.new('ripemd160')
        r.update(hash_of_public_key)
        r.hexdigest()

        #Step 3: Adding network bytes (00) to RIPEMD-160
        networked =  binascii.unhexlify('00'+r.hexdigest())

        #Step 4: Double hash the networked RIPEMD-160
        sha4a   = hashlib.sha256(networked).digest()
        sha4b  = hashlib.sha256(sha4a).digest()

        #Step 5: Get the first four bytes of sha4b:
        four_bytes = str(binascii.hexlify(sha4b).decode('utf-8'))[:8]

        #Step 6: Adding the four_bytes to the end the RIPEMD-160 from step 3:
        address_hex = str(binascii.hexlify(networked).decode('utf-8')) + four_bytes

        #Step 7: Convert the hex_address using base58 to bitcoin adres
        address_base58 = base58.b58encode(binascii.unhexlify(address_hex))

        return str(address_base58.decode())

>>> import hashlib, binascii, base58
>>> from fastecdsa import keys, curve, ecdsa
>>> hexkey='c89856dd1b8f867fedfbefaa95c340a086aaaf1b086ffa3772b37540b45912f9'
>>> base58.b58encode_check(binascii.a2b_hex('80'+hexkey+'01')).decode()
'L3weAF62wRcr5E8xYad2k4UVoV2TC4dxDSFxm31cnRbbncJiBGue'
>>> curve = curve.secp256k1
>>> pub_key = keys.get_public_key(int(hexkey,16), curve)
>>> uncompressed_public_key = '04'+str(hex(pub_key.x)[2:]).zfill(64)+str(hex(pub_key.y)[2:]).zfill(64)
>>> if int(str(pub_key.y)) % 2 == 0:
...   compressed_public_key = '02'
... else:
...   compressed_public_key = '03'
... 
>>> compressed_public_key += str(uncompressed_public_key[2:66])
>>> compressed_hash160 = hashlib.new('ripemd160',hashlib.sha256(binascii.unhexlify(compressed_public_key)).digest()).hexdigest()
>>> base58.b58encode_check(binascii.unhexlify('00'+compressed_hash160)).decode()
'1L1Z1V8WCQi5DEuQeF3GLR9LPWEUF2swtU'

==============

Hex: c89856dd1b8f867fedfbefaa95c340a086aaaf1b086ffa3772b37540b45912f9

Uncompressed Private Key WIF:  5KLdWjcaX1983KPCE3diBD7gc11L5KVmEEsy8iEjYb7w6syygUH
Uncompressed Legacy Address:   15hw8MaTFjJsdkpwGNoBZRjGoCNzUy3D37

Compressed Private Key WIF:    L3weAF62wRcr5E8xYad2k4UVoV2TC4dxDSFxm31cnRbbncJiBGue
Compressed Legacy Address:     1L1Z1V8WCQi5DEuQeF3GLR9LPWEUF2swtU
Wrapped P2SH-P2WPKH Address:   3B5R1gaz9eH2Vh9NRUEkwL8fbD6fPXiyeY
Wrapped P2WPKH Bech32 Address: bc1q6zz3hma6gzqk4uf5tfx8r907lsslc7uvepafx0

==============

c89856dd1b8f867fedfbefaa95c340a086aaaf1b086ffa3772b37540b45912f9

Public keys:
compressed: 039E8CFA0C5F56D61AA7ADC9CCE5963E9622C29AF2D61E82A2494B7051107B8720
uncompressed:049E8CFA0C5F56D61AA7ADC9CCE5963E9622C29AF2D61E82A2494B7051107B8720D2A18C74A3968A65860CCCAE2892A6A6B39001104B34D5E8D332598C06625A03

compressed: 1L1Z1V8WCQi5DEuQeF3GLR9LPWEUF2swtU
uncompressed: 15hw8MaTFjJsdkpwGNoBZRjGoCNzUy3D37