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https://github.com/Atmosphere-NX/Atmosphere.git
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82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <stdio.h>
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#include "key_derivation.h"
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#include "se.h"
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#include "cluster.h"
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#include "timers.h"
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#include "fuse.h"
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#include "uart.h"
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#include "utils.h"
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#define u8 uint8_t
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#define u32 uint32_t
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#include "key_derivation_bin.h"
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#undef u8
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#undef u32
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void derive_keys(uint32_t version) {
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/* Clear mailbox. */
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volatile uint32_t *mailbox = (volatile uint32_t *)0x4003FF00;
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while (*mailbox != 0) {
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*mailbox = 0;
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}
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/* Set derivation id. */
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*((volatile uint32_t *)0x4003E800) = version;
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/* Copy key derivation stub into IRAM high. */
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for (size_t i = 0; i < key_derivation_bin_size; i += sizeof(uint32_t)) {
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write32le((void *)0x4003D000, i, read32le(key_derivation_bin, i));
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}
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cluster_boot_cpu0(0x4003D000);
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while (*mailbox != 7) {
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/* Wait until keys have been derived. */
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}
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}
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void load_keys(const uint8_t *se_state) {
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/* Clear keyslots up to 0xA. */
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for (size_t i = 0; i < 0xA; i++) {
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clear_aes_keyslot(i);
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}
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/* Copy device keygen key out of state keyslot 0xA into keyslot 0xA. */
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set_aes_keyslot(0xA, se_state + 0x30 + (0xA * 0x20), 0x10);
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/* Clear keyslot 0xB. */
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clear_aes_keyslot(0xB);
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/* Copy firmware device key out of state keyslot 0xE into keyslot 0xC. */
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set_aes_keyslot(0xC, se_state + 0x30 + (0xE * 0x20), 0x10);
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/* Copy master key out of state keyslot 0xC into keyslot 0xD. */
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set_aes_keyslot(0xD, se_state + 0x30 + (0xC * 0x20), 0x10);
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/* Clear keyslot 0xE. */
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clear_aes_keyslot(0xE);
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/* Copy device key out of state keyslot 0xF into keyslot 0xF. */
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set_aes_keyslot(0xF, se_state + 0x30 + (0xF * 0x20), 0x10);
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/* Set keyslot flags properly in preparation for secmon. */
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set_aes_keyslot_flags(0xE, 0x15);
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set_aes_keyslot_flags(0xC, 0x15);
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}
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