Hi,
The PSK method sounds better during the joining process.
Probably JA acts as dummy agent for transferring the joining messages.
Case 1 : minimal
---------------------
JN JA
JCE
| |
|
| |
|
Join Request (JR) -------------> JR -------------------------->
Join Request
(Using Key1) (K2
key/layer2 key)
| |
|
| |
|
Join Success <-------------- Join Success <---------------------
Join Success
(Key2 encrypted (K2
key/layer2 key) (Made an entry for the new node)
using Key1)
Case 2 : secure
--------------------
JN JA
JCE/PCE/NME
| |
|
| |
|
Join Request (JR) ---------------> JR --------------------------> Check
for Pre shared key
(Using Key1) (K2 key/layer2 key)
| |
|
| |
|
Join Check <------------------ Join Check <-------------------------
Join Check
( K2 key (Using Key1) (K2 key/layer2 key
) (K2 key encrypted
decrypted
using PSK)
using PSK )
| |
|
| |
|
Join Confirm -----------------> Join Confirm ---------------------------->
Join Success
(Using Key2) (K2
key/layer2 key)
Pre shared Key (PSK) should be there in the JCE /PCE/NME; if not, the node is
denied to join the network;
Does case2 make sense ? Minimum 6 exchanges required in this scenario.
Is it possible to get the private keys of different manufacturers? Also how the
interoperability issue to be addressed .
Regards,
Lijo Thomas
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