+------------+
     +------+         |            |
     |Device|         | Directory  |
     +------+         |   Server   |
                      +------------+
+----------------+   +--------------+
|   +---------+  |   |              |
|   | Initial |  |   |              |
|   |  boot?  |  |   |              |
|   +----+----+  |   |              |
|        |       |   |              |
| +------v-----+ |   |              |
| |  Generate  | |   |              |
| |Self-signed | |   |              |
| |Certificate | |   |              |
| +------------+ |   |              |
|        |       |   |   +-------+  |
|        +-------|---|-->|Receive|  |
|                |   |   +---+---+  |
|                |   |       |      |
|                |   |   +---v---+  |
|                |   |   |Publish|  |
|                |   |   +-------+  |
|                |   |              |
+----------------+   +--------------+