IV Update in a Bluetooth® Mesh Network#

NOTE: This section replaces AN1318: IV Update in a Bluetooth® Mesh Network. Further updates to this application note will be provided here.

This application note provides background information on the sequence number and IV index in a Bluetooth mesh network and the IV Update and IV Index Recovery procedures. It then discusses how to implement IV Update functionality in a Bluetooth mesh application.

Key Points#

• Short introduction to Bluetooth mesh security and replay attacks

• Sequence number and IV index

• IV Update procedure

• IV Index Recovery procedure

• Bluetooth mesh APIs for IV update and recovery