mirror of
https://github.com/trezor/trezor-firmware.git
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49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2022 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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import typing as t
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from dataclasses import dataclass
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from typing_extensions import Protocol
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class FirmwareIntegrityError(Exception):
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pass
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class InvalidSignatureError(FirmwareIntegrityError):
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pass
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class Unsigned(FirmwareIntegrityError):
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pass
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class DigestCalculator(Protocol):
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def update(self, __data: bytes) -> None: ...
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def digest(self) -> bytes: ...
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Hasher = t.Callable[[bytes], DigestCalculator]
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@dataclass
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class FirmwareHashParameters:
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hash_function: Hasher
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chunk_size: int
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padding_byte: t.Optional[bytes]
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