wallet: do not validate script type in sign message function

src/apps/wallet/sign_message.py

@@ -26,6 +26,7 @@ async def sign_message(ctx, msg):
         path=msg.address_n,
         coin=coin,
         script_type=msg.script_type,
+        validate_script_type=False,
     )
 
     node = await seed.derive_node(ctx, address_n, curve_name=coin.curve_name)

src/apps/wallet/sign_tx/addresses.py

@@ -193,7 +193,7 @@ def address_short(coin: CoinInfo, address: str) -> str:
 
 
 def validate_full_path(
-    path: list, coin: CoinInfo, script_type: InputScriptType
+    path: list, coin: CoinInfo, script_type: InputScriptType, validate_script_type=True
 ) -> bool:
     """
     Validates derivation path to fit Bitcoin-like coins. We mostly use
@@ -209,7 +209,9 @@ def validate_full_path(
 
     if not validate_purpose(path[0], coin):
         return False
-    if not validate_purpose_against_script_type(path[0], script_type):
+    if validate_script_type and not validate_purpose_against_script_type(
+        path[0], script_type
+    ):
         return False
 
     if path[1] != coin.slip44 | HARDENED:

tests/test_apps.wallet.address.py

@@ -152,6 +152,10 @@ class TestAddress(unittest.TestCase):
         for path, input_type in correct_derivation_paths:
             self.assertTrue(validate_full_path(path, coin, input_type))
 
+        self.assertTrue(validate_full_path([44 | HARDENED, 0 | HARDENED, 0 | HARDENED, 0, 0], coin, InputScriptType.SPENDADDRESS))
+        self.assertFalse(validate_full_path([44 | HARDENED, 0 | HARDENED, 0 | HARDENED, 0, 0], coin, InputScriptType.SPENDWITNESS))
+        self.assertTrue(validate_full_path([44 | HARDENED, 0 | HARDENED, 0 | HARDENED, 0, 0], coin, InputScriptType.SPENDWITNESS, validate_script_type=False))
+
     def test_paths_bch(self):
         incorrect_derivation_paths = [
             ([44 | HARDENED], InputScriptType.SPENDADDRESS),  # invalid length