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keys: Finalize Mariko compatibility with save mac

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shchmue 2020-12-09 19:08:24 -07:00
parent 1e87828db4
commit b074d14107
4 changed files with 15 additions and 18 deletions
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15
source/keys/keys.c
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@ -358,8 +358,9 @@ static void _derive_misc_keys(key_derivation_ctx_t *keys, u32 *derivable_key_cou
se_aes_crypt_block_ecb(8, 0, keys->header_key + 0x10, header_key_source + 0x10);
}
if (_key_exists(keys->device_key)) {
_generate_kek(8, save_mac_kek_source, keys->device_key, aes_kek_generation_source, NULL);
if (_key_exists(keys->device_key) || (_key_exists(keys->master_key[0]) && _key_exists(keys->device_key_4x))) {
_get_device_key(8, keys->temp_key, 0, keys->device_key, keys->device_key_4x, keys->master_key[0]);
_generate_kek(8, save_mac_kek_source, keys->temp_key, aes_kek_generation_source, NULL);
se_aes_crypt_block_ecb(8, 0, keys->save_mac_key, save_mac_key_source);
}
@ -675,7 +676,7 @@ get_titlekeys:
se_aes_xts_crypt(1, 0, 0, 0, titlekey_buffer->read_buffer, titlekey_buffer->read_buffer, XTS_CLUSTER_SIZE, NX_EMMC_CALIBRATION_SIZE / XTS_CLUSTER_SIZE);
nx_emmc_cal0_t *cal0 = (nx_emmc_cal0_t *)titlekey_buffer->read_buffer;
if (cal0->magic != 0x304C4143) {
if (cal0->magic != MAGIC_CAL0) {
EPRINTF("Invalid CAL0 magic. Check BIS key 0.");
goto dismount;
}
@ -880,12 +881,16 @@ static void _generate_kek(u32 ks, const void *key_source, void *master_key, cons
}
static void _get_device_key(u32 ks, void *out_device_key, u32 revision, const void *device_key, const void *new_device_key, const void *master_key) {
if (revision < KB_FIRMWARE_VERSION_400) {
if (revision == KB_FIRMWARE_VERSION_100_200 && !h_cfg.t210b01) {
memcpy(out_device_key, device_key, AES_128_KEY_SIZE);
return;
}
revision -= KB_FIRMWARE_VERSION_400;
if (revision >= KB_FIRMWARE_VERSION_400) {
revision -= KB_FIRMWARE_VERSION_400;
} else {
revision = 0;
}
u32 temp_key[AES_128_KEY_SIZE / 4] = {0};
se_aes_key_set(ks, new_device_key, AES_128_KEY_SIZE);
se_aes_crypt_ecb(ks, 0, temp_key, AES_128_KEY_SIZE, device_master_key_source_sources[revision], AES_128_KEY_SIZE);

9
source/main.c
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@ -362,15 +362,6 @@ void ipl_main()
display_backlight_pwm_init();
if (h_cfg.t210b01)
{
gfx_printf("Mariko SOC detected!\nMariko is currently unsupported\nbut stay tuned...");
gfx_printf("\n\n Press any button to power off.");
display_backlight_brightness(h_cfg.backlight, 1000);
btn_wait();
power_off();
}
// Overclock BPMP.
bpmp_clk_rate_set(BPMP_CLK_DEFAULT_BOOST);

8
source/storage/nx_emmc_bis.c
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@ -95,7 +95,7 @@ static int _nx_aes_xts_crypt_sec(u32 tweak_ks, u32 crypt_ks, u32 enc, u8 *tweak,
for (u32 i = 0; i < (tweak_exp << 5); i++)
_gf256_mul_x_le(tweak);
u8 orig_tweak[0x10];
u8 orig_tweak[0x10] __attribute__((aligned(4)));
memcpy(orig_tweak, tweak, 0x10);
// We are assuming a 0x10-aligned sector size in this implementation.
@ -131,7 +131,7 @@ static int nx_emmc_bis_write_block(u32 sector, u32 count, void *buff, bool force
if (!system_part)
return 3; // Not ready.
u8 tweak[0x10];
u8 tweak[0x10] __attribute__((aligned(4)));
u32 cluster = sector / SECTORS_PER_CLUSTER;
u32 aligned_sector = cluster * SECTORS_PER_CLUSTER;
u32 sector_index_in_cluster = sector % SECTORS_PER_CLUSTER;
@ -186,8 +186,8 @@ static int nx_emmc_bis_read_block(u32 sector, u32 count, void *buff)
static u32 prev_cluster = -1;
static u32 prev_sector = 0;
static u8 tweak[0x10];
u8 cache_tweak[0x10];
static u8 tweak[0x10] __attribute__((aligned(4)));
u8 cache_tweak[0x10] __attribute__((aligned(4)));
u32 tweak_exp = 0;
bool regen_tweak = true;

1
source/storage/nx_emmc_bis.h
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@ -225,6 +225,7 @@ typedef struct _nx_emmc_cal0_t
u8 console_6axis_sensor_mount_type;
} __attribute__((packed)) nx_emmc_cal0_t;
#define MAGIC_CAL0 0x304C4143
#define NX_EMMC_CALIBRATION_OFFSET 0x4400
#define NX_EMMC_CALIBRATION_SIZE 0x8000
#define XTS_CLUSTER_SIZE 0x4000