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Splitting cmd_xxx() functions in separate files.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-08-13 14:59:27 +02:00
parent 87feed1222
commit e6f082d512
30 changed files with 2703 additions and 2004 deletions
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52
src/hsm/cmd_key_gen.c Normal file
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/*
* This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
* Copyright (c) 2022 Pol Henarejos.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "crypto_utils.h"
#include "sc_hsm.h"
#include "random.h"
int cmd_key_gen() {
uint8_t key_id = P1(apdu);
uint8_t p2 = P2(apdu);
uint8_t key_size = 32;
int r;
if (!isUserAuthenticated)
return SW_SECURITY_STATUS_NOT_SATISFIED();
if (p2 == 0xB2)
key_size = 32;
else if (p2 == 0xB1)
key_size = 24;
else if (p2 == 0xB0)
key_size = 16;
//at this moment, we do not use the template, as only CBC is supported by the driver (encrypt, decrypt and CMAC)
uint8_t aes_key[32]; //maximum AES key size
memcpy(aes_key, random_bytes_get(key_size), key_size);
int aes_type = 0x0;
if (key_size == 16)
aes_type = HSM_KEY_AES_128;
else if (key_size == 24)
aes_type = HSM_KEY_AES_192;
else if (key_size == 32)
aes_type = HSM_KEY_AES_256;
r = store_keys(aes_key, aes_type, key_id);
if (r != CCID_OK)
return SW_MEMORY_FAILURE();
if (find_and_store_meta_key(key_id) != CCID_OK)
return SW_EXEC_ERROR();
low_flash_available();
return SW_OK();
}