This whitepaper is for historical reference only. Some content might be outdated and some links might not be available.

# Security
<a name="security"></a>

 LoRaWAN devices encrypt their binary messages using [AES128 CTR](https://xilinx.github.io/Vitis_Libraries/security/2020.1/guide_L1/internals/ctr.html) mode before they are transmitted over the air. Transport Layer Security (TLS) encryption is used further upstream between the LoRaWAN gateway and AWS IoT Core. 

 Refer to [Data Security with AWS IoT Core for LoRaWAN](https://docs.aws.amazon.com/iot/latest/developerguide/connect-iot-lorawan-security.html) for details on how data security is addressed between each component.