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LAUNCHXL-CC1310: Security data communication with CC1310

Part Number: LAUNCHXL-CC1310
Other Parts Discussed in Thread: CC1310


In my project I use CC1310 chip and EasyLink API. Now I need to add data encryption.I need only peer-to-peer  communication.

This task is new for me. Can someone with experience in encryption give to me some advice?

I found some examples from TI, like this one

It is used AES-CCM mode. As I understand nonce should be uncial for every encryption. In example above counter packetNum is used for that. But if node or master rebooted, packetNum synchronization is broken and encryption/decryption is broken too.