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Revise sept key generation methodology.

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This commit is contained in:
Michael Scire 2019-06-18 22:22:40 -07:00
parent 63a9c856fc
commit c96ae0148e
21 changed files with 2533 additions and 198 deletions
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30
exosphere/src/masterkey.c
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@ -13,7 +13,7 @@
* 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 <stdbool.h>
#include <stdint.h>
#include <string.h>
@ -83,7 +83,7 @@ void mkey_detect_revision(void) {
if (g_determined_mkey_revision) {
generic_panic();
}
for (unsigned int rev = 0; rev < MASTERKEY_REVISION_MAX; rev++) {
if (check_mkey_revision(rev, configitem_is_retail())) {
g_determined_mkey_revision = true;
@ -91,7 +91,7 @@ void mkey_detect_revision(void) {
break;
}
}
/* We must have determined the master key, or we're not running on a Switch. */
if (!g_determined_mkey_revision) {
/* Panic in bright red. */
@ -135,23 +135,17 @@ void set_old_devkey(unsigned int revision, const uint8_t *key) {
}
unsigned int devkey_get_keyslot(unsigned int revision) {
if (!g_determined_mkey_revision || revision >= MASTERKEY_REVISION_MAX) {
if (!g_determined_mkey_revision || revision > g_mkey_revision) {
generic_panic();
}
if (revision > g_mkey_revision) {
generic_panic();
}
if (revision >= 1) {
if (revision == MASTERKEY_REVISION_MAX) {
return KEYSLOT_SWITCH_DEVICEKEY;
} else {
/* Load into a temp keyslot. */
set_aes_keyslot(KEYSLOT_SWITCH_TEMPKEY, g_old_devicekeys[revision - MASTERKEY_REVISION_400_410], 0x10);
return KEYSLOT_SWITCH_TEMPKEY;
}
} else {
if (revision < MASTERKEY_REVISION_400_410) {
return KEYSLOT_SWITCH_4XOLDDEVICEKEY;
} else if (revision < g_mkey_revision) {
/* Load into a temp keyslot. */
set_aes_keyslot(KEYSLOT_SWITCH_TEMPKEY, g_old_devicekeys[revision - MASTERKEY_REVISION_400_410], 0x10);
return KEYSLOT_SWITCH_TEMPKEY;
} else {
return KEYSLOT_SWITCH_DEVICEKEY;
}
}
}