Revise sept key generation methodology.

sept/sept-secondary/src/key_derivation.h

@@ -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/>.
  */
- 
+
 #ifndef SEPT_KEYDERIVATION_H
 #define SEPT_KEYDERIVATION_H
 
@@ -21,6 +21,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-void derive_7x_keys(const void *tsec_key, void *tsec_root_key);
+void derive_keys(void);
+void load_keys(const uint8_t *se_state);
 
 #endif