34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/*
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* This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
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* Copyright (c) 2022 Pol Henarejos.
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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, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 "random.h"
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#include "sc_hsm.h"
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uint8_t challenge[256];
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uint8_t challenge_len = 0;
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int cmd_challenge() {
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uint8_t *rb = (uint8_t *)random_bytes_get(apdu.ne);
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if (!rb)
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return SW_WRONG_LENGTH();
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memcpy(res_APDU, rb, apdu.ne);
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challenge_len = MIN(apdu.ne, sizeof(challenge));
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memcpy(challenge, rb, challenge_len);
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res_APDU_size = apdu.ne;
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return SW_OK();
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}
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