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src: fix ethereum sign for chain_id >= 0x100

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Pavol Rusnak 2018-07-19 18:05:26 +02:00
parent 20237ace5c
commit 3067339b41
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
1 changed files with 9 additions and 1 deletions
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src/apps/ethereum/sign_tx.py
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@ -98,7 +98,15 @@ def get_total_length(msg: EthereumSignTx, data_total: int) -> int:
length += rlp.field_length(len(field), field[:1])
if msg.chain_id: # forks replay protection
length += rlp.field_length(1, [msg.chain_id])
if msg.chain_id < 0x100:
l = 1
elif msg.chain_id < 0x10000:
l = 2
elif msg.chain_id < 0x1000000:
l = 3
else:
l = 4
length += rlp.field_length(l, [msg.chain_id])
length += rlp.field_length(0, 0)
length += rlp.field_length(0, 0)