Producer
                            |      ^
                            |      |
     Path Label TLV         |      |           Path Label TLV
+-----------------------+   |      |     +-----------------------+
|nexthop label=456      |   v      |     |nexthop label=456      |
|encrypted path label={}|  Forwarder 3   |encrypted path label={}|
+-----------------------+   |      ^     +-----------------------+
                            |      |
path label is encrypted     |      |     path label is decrypted
with Forwarder 3            |      |     with Forwarder 3
symmetric key               |      |     symmetric key
                            |      |
                            |      |
                            |      |
                            |      |
                            |      |
     Path Label TLV         |      |           Path Label TLV
+-----------------------+   |      |     +-----------------------+
|nexthop label=634      |   v      |     |nexthop label=634      |
|encrypted path label=  |  Forwarder 2   |encrypted path label=  |
| {456}                 |   |      ^     | {456}                 |
+-----------------------+   |      |     +-----------------------+
                            |      |
path label is encrypted     |      |     path label is decrypted
with Forwarder 2            |      |     with Forwarder 2
symmetric key               |      |     symmetric key
                            |      |
                            |      |
                            |      |
                            |      |
                            |      |
     Path Label TLV         |      |           Path Label TLV
+-----------------------+   |      |     +-----------------------+
|nexthop label=912      |   v      |     |nexthop label=912      |
|encrypted path label=  |  Forwarder 1   |encrypted path label=  |
| {634, encrypted path  |   |      ^     | {634, encrypted path  |
| label {456}}          |   |      |     | label {456}}          |
+-----------------------+   |      |     +-----------------------+
                            |      |
path label is encrypted     |      |     path label is decrypted
with Forwarder 1            |      |     with Forwarder 1
symmetric key               |      |     symmetric key
                            |      |
                            |      |
                            |      |
                            |      |
                            v      |
                            Consumer