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https://github.com/trezor/trezor-firmware.git
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36 lines
1.1 KiB
C
36 lines
1.1 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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#include "time_estimate.h"
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// The number of CPU cycles required to execute one iteration of PBKDF2.
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#define PIN_PBKDF2_CYCLES_PER_ITER 11100
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// MCU clock 120 MHz
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#define MCU_CLOCK 120000000
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uint32_t time_estimate_pbkdf2_ms(uint32_t iterations) {
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#if EMULATOR
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(void)iterations;
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return 500;
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#else
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return PIN_PBKDF2_CYCLES_PER_ITER * iterations / (MCU_CLOCK / 1000);
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#endif
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}
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