OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	09/05/2025 09:36:16 AM	rwxr-xr-x
📄 __init__.py	1.08 KB	06/05/2022 05:11:31 PM	rw-r--r--
📁 __pycache__	-	03/16/2023 12:57:03 PM	rwxr-xr-x
📄 between.py	1.54 KB	10/10/2015 06:47:54 AM	rw-r--r--
📄 btc_address.py	1.49 KB	12/18/2020 10:22:34 AM	rw-r--r--
📄 card.py	4.28 KB	05/07/2020 12:32:08 PM	rw-r--r--
📄 domain.py	1.29 KB	10/05/2021 06:21:42 AM	rw-r--r--
📄 email.py	1.93 KB	04/02/2020 01:03:56 PM	rw-r--r--
📄 extremes.py	991 bytes	08/30/2016 02:58:11 PM	rw-r--r--
📄 hashes.py	2.44 KB	06/03/2017 02:07:19 PM	rw-r--r--
📁 i18n	-	03/16/2023 12:57:03 PM	rwxr-xr-x
📄 iban.py	1.14 KB	05/09/2016 03:06:26 PM	rw-r--r--
📄 ip_address.py	3.99 KB	06/05/2022 05:04:06 PM	rw-r--r--
📄 length.py	970 bytes	10/10/2015 06:47:54 AM	rw-r--r--
📄 mac_address.py	836 bytes	10/10/2015 06:47:54 AM	rw-r--r--
📄 slug.py	529 bytes	10/10/2015 06:47:54 AM	rw-r--r--
📄 truthy.py	876 bytes	10/05/2021 06:21:42 AM	rw-r--r--
📄 url.py	4.82 KB	06/05/2022 05:11:01 PM	rw-r--r--
📄 utils.py	1.97 KB	10/05/2021 06:21:42 AM	rw-r--r--
📄 uuid.py	970 bytes	09/03/2020 07:35:41 AM	rw-r--r--

Editing: btc_address.py

import re
from hashlib import sha256

from .utils import validator

segwit_pattern = re.compile(
    r'^(bc|tc)[0-3][02-9ac-hj-np-z]{14,74}$')

def validate_segwit_address(addr):
    return segwit_pattern.match(addr)

def decode_base58(addr):
    alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
    return sum([
        (58 ** e) * alphabet.index(i)
        for e, i in enumerate(addr[::-1])
    ])

def validate_old_btc_address(addr):
    "Validate P2PKH and P2SH type address"
    if not len(addr) in range(25, 35):
        return False
    decoded_bytes = decode_base58(addr).to_bytes(25, "big")
    header = decoded_bytes[:-4]
    checksum = decoded_bytes[-4:]
    return checksum == sha256(sha256(header).digest()).digest()[:4]

@validator
def btc_address(value):
    """
    Return whether or not given value is a valid bitcoin address.

If the value is valid bitcoin address this function returns ``True``,
    otherwise :class:`~validators.utils.ValidationFailure`.

Full validation is implemented for P2PKH and P2SH addresses.
    For segwit addresses a regexp is used to provide a reasonable estimate
    on whether the address is valid.

Examples::

>>> btc_address('3Cwgr2g7vsi1bXDUkpEnVoRLA9w4FZfC69')
        True

:param value: Bitcoin address string to validate
    """
    if not value or not isinstance(value, str):
        return False
    if value[:2] in ("bc", "tb"):
        return validate_segwit_address(value)
    return validate_old_btc_address(value)