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https://github.com/trezor/trezor-firmware.git
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41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#include "secbool.h"
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// Protection against bootloader downgrade
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// Ensures bootloader version is stored in monotonic counter
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// If the version cannot be written, the function will shutdown the device
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void ensure_bootloader_min_version(void);
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// Protection against firmware downgrade
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// This functions checks if the firmware version is at least the minimum
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// required version, returns sectrue if check_version is higher or equal to the
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// stored version
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secbool check_firmware_min_version(uint8_t check_version);
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// Ensures firmware version is stored in monotonic counter
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// If the version cannot be written, the function will shutdown the device
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void ensure_firmware_min_version(uint8_t version);
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