mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-18 13:38:12 +00:00
66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
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from . import messages as proto
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from .tools import field, expect, CallException, normalize_nfc, session
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def int_to_big_endian(value):
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return value.to_bytes((value.bit_length() + 7) // 8, 'big')
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### Client functions ###
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@field('address')
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@expect(proto.EthereumAddress)
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def get_address(client, n, show_display=False, multisig=None):
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return client.call(proto.EthereumGetAddress(address_n=n, show_display=show_display))
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@session
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def sign_tx(client, n, nonce, gas_price, gas_limit, to, value, data=None, chain_id=None, tx_type=None):
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msg = proto.EthereumSignTx(
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address_n=n,
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nonce=int_to_big_endian(nonce),
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gas_price=int_to_big_endian(gas_price),
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gas_limit=int_to_big_endian(gas_limit),
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value=int_to_big_endian(value))
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if to:
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msg.to = to
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if data:
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msg.data_length = len(data)
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data, chunk = data[1024:], data[:1024]
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msg.data_initial_chunk = chunk
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if chain_id:
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msg.chain_id = chain_id
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if tx_type is not None:
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msg.tx_type = tx_type
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response = client.call(msg)
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while response.data_length is not None:
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data_length = response.data_length
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data, chunk = data[data_length:], data[:data_length]
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response = client.call(proto.EthereumTxAck(data_chunk=chunk))
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return response.signature_v, response.signature_r, response.signature_s
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@expect(proto.EthereumMessageSignature)
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def sign_message(client, n, message):
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message = normalize_nfc(message)
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return client.call(proto.EthereumSignMessage(address_n=n, message=message))
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def verify_message(client, address, signature, message):
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message = normalize_nfc(message)
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try:
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resp = client.call(proto.EthereumVerifyMessage(address=address, signature=signature, message=message))
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except CallException as e:
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resp = e
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if isinstance(resp, proto.Success):
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return True
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return False
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