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Code Issues Releases Wiki Activity

feat(all): make chain_id mandatory

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This commit is contained in:
matejcik 2021-09-01 12:04:39 +02:00 committed by matejcik
parent f051225730
commit 639406b01f
9 changed files with 29 additions and 80 deletions
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2
common/protob/messages-ethereum.proto
View File

@ -65,7 +65,7 @@ message EthereumSignTx {
optional bytes value = 6; // <=256 bit unsigned big endian (in wei)
optional bytes data_initial_chunk = 7; // The initial data chunk (<= 1024 bytes)
optional uint32 data_length = 8; // Length of transaction payload
optional uint64 chain_id = 9; // Chain Id for EIP 155
required uint64 chain_id = 9; // Chain Id for EIP 155
optional uint32 tx_type = 10; // Used for Wanchain
}

1
core/.changelog.d/1794.incompatible Normal file
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@ -0,0 +1 @@
Ethereum non-EIP-155 cross-chain signing is no longer supported.

19
core/src/apps/ethereum/sign_tx.py
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@ -75,10 +75,9 @@ async def sign_tx(ctx, msg, keychain):
sha.extend(resp.data_chunk)
# eip 155 replay protection
if msg.chain_id:
rlp.write(sha, msg.chain_id)
rlp.write(sha, 0)
rlp.write(sha, 0)
rlp.write(sha, msg.chain_id)
rlp.write(sha, 0)
rlp.write(sha, 0)
digest = sha.get_digest()
result = sign_digest(msg, keychain, digest)
@ -119,14 +118,12 @@ def get_total_length(msg: EthereumSignTx, data_total: int) -> int:
msg.gas_limit,
address.bytes_from_address(msg.to),
msg.value,
msg.chain_id,
0,
0,
):
length += rlp.length(item)
if msg.chain_id: # forks replay protection
length += rlp.length(msg.chain_id)
length += rlp.length(0)
length += rlp.length(0)
length += rlp.header_length(data_total, msg.data_initial_chunk)
length += data_total
@ -154,7 +151,7 @@ def sign_digest(msg: EthereumSignTx, keychain, digest):
req.signature_v = signature[0]
if msg.chain_id > MAX_CHAIN_ID:
req.signature_v -= 27
elif msg.chain_id:
else:
req.signature_v += 2 * msg.chain_id + 8
req.signature_r = signature[1:33]
@ -217,6 +214,4 @@ def sanitize(msg):
msg.to = ""
if msg.nonce is None:
msg.nonce = b""
if msg.chain_id is None:
msg.chain_id = 0
return msg

4
core/src/trezor/messages.py
View File

@ -2991,12 +2991,13 @@ if TYPE_CHECKING:
value: "bytes | None"
data_initial_chunk: "bytes | None"
data_length: "int | None"
chain_id: "int | None"
chain_id: "int"
tx_type: "int | None"
def __init__(
self,
*,
chain_id: "int",
address_n: "list[int] | None" = None,
nonce: "bytes | None" = None,
gas_price: "bytes | None" = None,
@ -3005,7 +3006,6 @@ if TYPE_CHECKING:
value: "bytes | None" = None,
data_initial_chunk: "bytes | None" = None,
data_length: "int | None" = None,
chain_id: "int | None" = None,
tx_type: "int | None" = None,
) -> None:
pass

38
core/tests/test_apps.ethereum.keychain.py
View File

@ -155,44 +155,6 @@ class TestEthereumKeychain(unittest.TestCase):
)
)
def test_missing_chain_id(self):
@with_keychain_from_chain_id
async def handler_chain_id(ctx, msg, keychain):
slip44_id = msg.address_n[1] & ~HARDENED
# standard tests
self._check_keychain(keychain, slip44_id)
# provided address should succeed too
keychain.derive(msg.address_n)
await_result( # Ethereum
handler_chain_id(
wire.DUMMY_CONTEXT,
EthereumSignTx(
address_n=[44 | HARDENED, 60 | HARDENED, 0 | HARDENED],
chain_id=None,
),
)
)
await_result( # Ethereum Classic
handler_chain_id(
wire.DUMMY_CONTEXT,
EthereumSignTx(
address_n=[44 | HARDENED, 61 | HARDENED, 0 | HARDENED],
),
)
)
with self.assertRaises(wire.DataError):
await_result( # unknown slip44 id
handler_chain_id(
wire.DUMMY_CONTEXT,
EthereumSignTx(
address_n=[44 | HARDENED, 0 | HARDENED, 0 | HARDENED],
),
)
)
def test_wanchain(self):
@with_keychain_from_chain_id
async def handler_wanchain(ctx, msg, keychain):

1
legacy/firmware/.changelog.d/1794.incompatible Normal file
View File

@ -0,0 +1 @@
Ethereum non-EIP-155 cross-chain signing is no longer supported.

37
legacy/firmware/ethereum.c
View File

@ -193,12 +193,10 @@ static void send_signature(void) {
layoutProgress(_("Signing"), 1000);
/* eip-155 replay protection */
if (chain_id) {
/* hash v=chain_id, r=0, s=0 */
hash_rlp_number(chain_id);
hash_rlp_length(0, 0);
hash_rlp_length(0, 0);
}
/* hash v=chain_id, r=0, s=0 */
hash_rlp_number(chain_id);
hash_rlp_length(0, 0);
hash_rlp_length(0, 0);
keccak_Final(&keccak_ctx, hash);
if (ecdsa_sign_digest(&secp256k1, privkey, hash, sig, &v,
@ -216,10 +214,8 @@ static void send_signature(void) {
msg_tx_request.has_signature_v = true;
if (chain_id > MAX_CHAIN_ID) {
msg_tx_request.signature_v = v;
} else if (chain_id) {
msg_tx_request.signature_v = v + 2 * chain_id + 35;
} else {
msg_tx_request.signature_v = v + 27;
msg_tx_request.signature_v = v + 2 * chain_id + 35;
}
msg_tx_request.has_signature_r = true;
@ -438,17 +434,12 @@ void ethereum_signing_init(EthereumSignTx *msg, const HDNode *node) {
if (!msg->has_nonce) msg->nonce.size = 0;
/* eip-155 chain id */
if (msg->has_chain_id) {
if (msg->chain_id < 1) {
fsm_sendFailure(FailureType_Failure_DataError,
_("Chain Id out of bounds"));
ethereum_signing_abort();
return;
}
chain_id = msg->chain_id;
} else {
chain_id = 0;
if (msg->chain_id < 1) {
fsm_sendFailure(FailureType_Failure_DataError, _("Chain ID out of bounds"));
ethereum_signing_abort();
return;
}
chain_id = msg->chain_id;
/* Wanchain txtype */
if (msg->has_tx_type) {
@ -558,11 +549,9 @@ void ethereum_signing_init(EthereumSignTx *msg, const HDNode *node) {
if (tx_type) {
rlp_length += rlp_calculate_number_length(tx_type);
}
if (chain_id) {
rlp_length += rlp_calculate_number_length(chain_id);
rlp_length += rlp_calculate_length(0, 0);
rlp_length += rlp_calculate_length(0, 0);
}
rlp_length += rlp_calculate_number_length(chain_id);
rlp_length += rlp_calculate_length(0, 0);
rlp_length += rlp_calculate_length(0, 0);
/* Stage 2: Store header fields */
hash_rlp_list_length(rlp_length);

6
python/src/trezorlib/messages.py
View File

@ -4264,13 +4264,14 @@ class EthereumSignTx(protobuf.MessageType):
6: protobuf.Field("value", "bytes", repeated=False, required=False),
7: protobuf.Field("data_initial_chunk", "bytes", repeated=False, required=False),
8: protobuf.Field("data_length", "uint32", repeated=False, required=False),
9: protobuf.Field("chain_id", "uint64", repeated=False, required=False),
9: protobuf.Field("chain_id", "uint64", repeated=False, required=True),
10: protobuf.Field("tx_type", "uint32", repeated=False, required=False),
}
def __init__(
self,
*,
chain_id: "int",
address_n: Optional[List["int"]] = None,
nonce: Optional["bytes"] = None,
gas_price: Optional["bytes"] = None,
@ -4279,10 +4280,10 @@ class EthereumSignTx(protobuf.MessageType):
value: Optional["bytes"] = None,
data_initial_chunk: Optional["bytes"] = None,
data_length: Optional["int"] = None,
chain_id: Optional["int"] = None,
tx_type: Optional["int"] = None,
) -> None:
self.address_n = address_n if address_n is not None else []
self.chain_id = chain_id
self.nonce = nonce
self.gas_price = gas_price
self.gas_limit = gas_limit
@ -4290,7 +4291,6 @@ class EthereumSignTx(protobuf.MessageType):
self.value = value
self.data_initial_chunk = data_initial_chunk
self.data_length = data_length
self.chain_id = chain_id
self.tx_type = tx_type

1
tests/device_tests/ethereum/test_signtx.py
View File

@ -178,6 +178,7 @@ def test_data_streaming(client):
to=TO_ADDR,
value=0,
data=b"ABCDEFGHIJKLMNOP" * 256 + b"!!!",
chain_id=1,
)