From 08bc8617ad1a07bf3a32fb5c055b741ecdb769d5 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Mon, 6 Apr 2020 12:53:57 +0200
Subject: [PATCH] change derivation of ln channel keys: use hardened paths

---
 electrum/lnutil.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/electrum/lnutil.py b/electrum/lnutil.py
index 8da446da2..ac02eb223 100644
--- a/electrum/lnutil.py
+++ b/electrum/lnutil.py
@@ -23,7 +23,7 @@ from .bitcoin import push_script, redeem_script_to_address, address_to_script
 from . import segwit_addr
 from .i18n import _
 from .lnaddr import lndecode
-from .bip32 import BIP32Node
+from .bip32 import BIP32Node, BIP32_PRIME
 
 if TYPE_CHECKING:
     from .lnchannel import Channel
@@ -77,7 +77,7 @@ class Config(StoredObject):
 
 @attr.s
 class LocalConfig(Config):
-    seed = attr.ib(type=bytes, converter=hex_to_bytes)
+    seed = attr.ib(type=bytes, converter=hex_to_bytes)  # type: Optional[bytes]
     funding_locked_received = attr.ib(type=bool)
     was_announced = attr.ib(type=bool)
     current_commitment_signature = attr.ib(type=bytes, converter=hex_to_bytes)
@@ -1040,12 +1040,12 @@ def extract_nodeid(connect_contents: str) -> Tuple[bytes, str]:
 # key derivation
 # see lnd/keychain/derivation.go
 class LnKeyFamily(IntEnum):
-    MULTISIG = 0
-    REVOCATION_BASE = 1
-    HTLC_BASE = 2
-    PAYMENT_BASE = 3
-    DELAY_BASE = 4
-    REVOCATION_ROOT = 5
+    MULTISIG = 0 | BIP32_PRIME
+    REVOCATION_BASE = 1 | BIP32_PRIME
+    HTLC_BASE = 2 | BIP32_PRIME
+    PAYMENT_BASE = 3 | BIP32_PRIME
+    DELAY_BASE = 4 | BIP32_PRIME
+    REVOCATION_ROOT = 5 | BIP32_PRIME
     NODE_KEY = 6