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Update wiki_lorawan_main authored by Guido Voigt's avatar Guido Voigt
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# LoRaWAN Main Wiki Page # LoRaWAN Main Wiki Page
## Security ## Security
### Over-the-Air-Activation (OTAA) ### Over-the-Air-Activation (OTAA)
...@@ -10,11 +8,15 @@ OTAA-Methodebased on Over-the-Air-Messages for Join Requests and Join Accepts. ...@@ -10,11 +8,15 @@ OTAA-Methodebased on Over-the-Air-Messages for Join Requests and Join Accepts.
For each end device you need For each end device you need
* 64-Bit-DevEUI [UUID global / like a MAC] * 64-Bit-DevEUI [UUID global / like a MAC]
* 64-Bit-AppEUI [crypto sign to join network] * 64-Bit-AppEUI [crypto sign to join network]
* 128-Bit-AppKey * 128-Bit Application Session Key (AppSKey)
* 128-Bit Network Session Key (NwkSKey)
* 2byte aka 16bit DevNonce [random byte to prevend relplay attack] * 2byte aka 16bit DevNonce [random byte to prevend relplay attack]
* Workflow * Workflow
![LoRaWAN-Security](/uploads/b576dc2e6370982ceb3349e9a12f56da/LoRaWAN-Security.png) ![LoRaWAN-Security](/uploads/b576dc2e6370982ceb3349e9a12f56da/LoRaWAN-Security.png)
* use this key with AppKey to generate a 4-Byte MIC (Message Integrity Code) * use this key with AppKey to generate a 4-Byte MIC (Message Integrity Code)
* Server accpet only devices with known DevEUI- und AppEUI and check MIC with AppKey. * Server accpet only devices with known DevEUI- und AppEUI and check MIC with AppKey.
![DevAddr-FCnt-Payload-MIC](/uploads/7904b8481871ef6a2874d2611bbd0817/DevAddr-FCnt-Payload-MIC.png) ![DevAddr-FCnt-Payload-MIC](/uploads/7904b8481871ef6a2874d2611bbd0817/DevAddr-FCnt-Payload-MIC.png)
*
\ No newline at end of file ### Activation by Personalization (ABP)
the ABP-Method diff from OTAA, as DevAddr and Session Keys (NwkSKey und AppSKey) will be sent.
For ABP Network need to know already all key. (preshared or OTAA before)