follow-up moving some funcs from ecc.py to bitcoin.py

follow-up 2f3d89f415

electrum/bitcoin.py

@@ -845,7 +845,6 @@ def control_block_for_taproot_script_spend(
 
 # user message signing
 def usermessage_magic(message: bytes) -> bytes:
-    from .bitcoin import var_int
     length = var_int(len(message))
     return b"\x18Bitcoin Signed Message:\n" + length + message
 
@@ -855,7 +854,6 @@ def ecdsa_sign_usermessage(ec_privkey, message: Union[bytes, str], *, is_compres
     return ec_privkey.ecdsa_sign_recoverable(msg32, is_compressed=is_compressed)
 
 def verify_usermessage_with_address(address: str, sig65: bytes, message: bytes, *, net=None) -> bool:
-    from .bitcoin import pubkey_to_address
     from .ecc import ECPubkey
     assert_bytes(sig65, message)
     if net is None: net = constants.net

electrum/gui/qt/update_checker.py

@@ -11,7 +11,7 @@ from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QLabel, QProgressBar,
 
 from electrum import version
 from electrum import constants
-from electrum import ecc
+from electrum.bitcoin import verify_usermessage_with_address
 from electrum.i18n import _
 from electrum.util import make_aiohttp_session
 from electrum.logging import Logger
@@ -123,8 +123,10 @@ class UpdateCheckThread(QThread, Logger):
                         continue
                     sig = base64.b64decode(sig)
                     msg = version_num.encode('utf-8')
-                    if ecc.verify_usermessage_with_address(address=address, sig65=sig, message=msg,
-                                                           net=constants.BitcoinMainnet):
+                    if verify_usermessage_with_address(
+                        address=address, sig65=sig, message=msg,
+                        net=constants.BitcoinMainnet
+                    ):
                         self.logger.info(f"valid sig for version announcement '{version_num}' from address '{address}'")
                         break
                 else:

electrum/plugins/digitalbitbox/digitalbitbox.py

@@ -18,7 +18,7 @@ import copy
 from typing import TYPE_CHECKING, Optional
 
 from electrum.crypto import sha256d, EncodeAES_bytes, DecodeAES_bytes, hmac_oneshot
-from electrum.bitcoin import public_key_to_p2pkh, usermessage_magic
+from electrum.bitcoin import public_key_to_p2pkh, usermessage_magic, verify_usermessage_with_address
 from electrum.bip32 import BIP32Node, convert_bip32_intpath_to_strpath, is_all_public_derivation
 from electrum.bip32 import normalize_bip32_derivation
 from electrum import descriptor
@@ -497,7 +497,7 @@ class DigitalBitbox_KeyStore(Hardware_KeyStore):
                 sig = ecc.construct_ecdsa_sig65(sig_string, recid, is_compressed=True)
                 pubkey, compressed, txin_type_guess = ecc.ECPubkey.from_ecdsa_sig65(sig, msg_hash)
                 addr = public_key_to_p2pkh(pubkey.get_public_key_bytes(compressed=compressed))
-                if ecc.verify_usermessage_with_address(addr, sig, message) is False:
+                if verify_usermessage_with_address(addr, sig, message) is False:
                     raise Exception(_("Could not sign message"))
             elif 'pubkey' in reply['sign'][0]:
                 # firmware <= v2.1.1
@@ -506,7 +506,7 @@ class DigitalBitbox_KeyStore(Hardware_KeyStore):
                     sig = ecc.construct_ecdsa_sig65(sig_string, recid, is_compressed=True)
                     try:
                         addr = public_key_to_p2pkh(binascii.unhexlify(reply['sign'][0]['pubkey']))
-                        if ecc.verify_usermessage_with_address(addr, sig, message):
+                        if verify_usermessage_with_address(addr, sig, message):
                             break
                     except Exception:
                         continue