1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+---------------+---------------+-------------------------------+
|   TS Type     |    Reserved   |       Selector Length         |
+---------------+---------------+-------------------------------+
|                                                               |
~                         Security Label*                       ~
|                                                               |
+---------------------------------------------------------------+