mirror of
https://github.com/Decscots/Lockpick_RCM.git
synced 2024-11-25 16:56:56 +01:00
55 lines
2.5 KiB
C
55 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2022 shchmue
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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 "nfc_crypto.h"
|
|
|
|
#include <mem/minerva.h>
|
|
#include <sec/se.h>
|
|
|
|
#include <string.h>
|
|
|
|
void nfc_decrypt_amiibo_keys(key_storage_t *keys, nfc_save_key_t out_nfc_save_keys[2], bool is_dev) {
|
|
const u8 *encrypted_keys = is_dev ? encrypted_nfc_keys_dev : encrypted_nfc_keys;
|
|
u32 kek[SE_KEY_128_SIZE / 4] = {0};
|
|
decrypt_aes_key(KS_AES_ECB, keys, kek, nfc_key_source, 0, 0);
|
|
|
|
nfc_keyblob_t __attribute__((aligned(4))) nfc_keyblob;
|
|
static const u8 nfc_iv[SE_KEY_128_SIZE] = {
|
|
0xB9, 0x1D, 0xC1, 0xCF, 0x33, 0x5F, 0xA6, 0x13, 0x2A, 0xEF, 0x90, 0x99, 0xAA, 0xCA, 0x93, 0xC8};
|
|
se_aes_key_set(KS_AES_CTR, kek, SE_KEY_128_SIZE);
|
|
se_aes_crypt_ctr(KS_AES_CTR, &nfc_keyblob, sizeof(nfc_keyblob), encrypted_keys, sizeof(nfc_keyblob), &nfc_iv);
|
|
|
|
minerva_periodic_training();
|
|
|
|
u32 xor_pad[0x20 / 4] = {0};
|
|
se_aes_key_set(KS_AES_CTR, nfc_keyblob.ctr_key, SE_KEY_128_SIZE);
|
|
se_aes_crypt_ctr(KS_AES_CTR, xor_pad, sizeof(xor_pad), xor_pad, sizeof(xor_pad), nfc_keyblob.ctr_iv);
|
|
|
|
minerva_periodic_training();
|
|
|
|
memcpy(out_nfc_save_keys[0].hmac_key, nfc_keyblob.hmac_key, sizeof(nfc_keyblob.hmac_key));
|
|
memcpy(out_nfc_save_keys[0].phrase, nfc_keyblob.phrase, sizeof(nfc_keyblob.phrase));
|
|
out_nfc_save_keys[0].seed_size = sizeof(nfc_keyblob.seed);
|
|
memcpy(out_nfc_save_keys[0].seed, nfc_keyblob.seed, sizeof(nfc_keyblob.seed));
|
|
memcpy(out_nfc_save_keys[0].xor_pad, xor_pad, sizeof(xor_pad));
|
|
|
|
memcpy(out_nfc_save_keys[1].hmac_key, nfc_keyblob.hmac_key_for_verif, sizeof(nfc_keyblob.hmac_key_for_verif));
|
|
memcpy(out_nfc_save_keys[1].phrase, nfc_keyblob.phrase_for_verif, sizeof(nfc_keyblob.phrase_for_verif));
|
|
out_nfc_save_keys[1].seed_size = sizeof(nfc_keyblob.seed_for_verif);
|
|
memcpy(out_nfc_save_keys[1].seed, nfc_keyblob.seed_for_verif, sizeof(nfc_keyblob.seed_for_verif));
|
|
memcpy(out_nfc_save_keys[1].xor_pad, xor_pad, sizeof(xor_pad));
|
|
}
|