src/apps/ethereum: use wire.Error

src/apps/ethereum/sign_tx.py

@@ -1,6 +1,6 @@
+from trezor import wire
 from trezor.messages.EthereumSignTx import EthereumSignTx
 from trezor.messages.EthereumTxRequest import EthereumTxRequest
-from trezor.messages import FailureType
 from trezor.utils import HashWriter
 from trezor.crypto import rlp
 from apps.ethereum import tokens
@@ -124,21 +124,21 @@ def node_derive(root, address_n: list):
 
 def check(msg: EthereumSignTx):
     if msg.chain_id < 0 or msg.chain_id > MAX_CHAIN_ID:
-        raise ValueError(FailureType.DataError, 'Chain id out of bounds')
+        raise wire.DataError('Chain id out of bounds')
 
     if msg.data_length > 0:
         if not msg.data_initial_chunk:
-            raise ValueError(FailureType.DataError, 'Data length provided, but no initial chunk')
+            raise wire.DataError('Data length provided, but no initial chunk')
         # Our encoding only supports transactions up to 2^24 bytes. To
         # prevent exceeding the limit we use a stricter limit on data length.
         if msg.data_length > 16000000:
-            raise ValueError(FailureType.DataError, 'Data length exceeds limit')
+            raise wire.DataError('Data length exceeds limit')
         if len(msg.data_initial_chunk) > msg.data_length:
-            raise ValueError(FailureType.DataError, 'Invalid size of initial chunk')
+            raise wire.DataError('Invalid size of initial chunk')
 
     # safety checks
     if not check_gas(msg) or not check_to(msg):
-        raise ValueError(FailureType.DataError, 'Safety check failed')
+        raise wire.DataError('Safety check failed')
 
 
 def check_gas(msg: EthereumSignTx) -> bool: