https://devzone.nordicsemi.com/f/nordic-q-a/96637/adding-security-to-mesh-communication-prvisioning-dfuHey everyone! We&#39;re developing a mesh-based product, yet I can&#39;t find proper documentation about encrypting these transmissions properly - both from the hardware and app sides. If you have any suggestions/tutorials, I&#39;d love to hear them!en-USTelligent Community 13Tue, 14 Feb 2023 12:24:19 GMThttps://devzone.nordicsemi.com/thread/409842?ContentTypeID=1Tue, 14 Feb 2023 12:24:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f1890c3f-0942-43d1-bf3d-1e928397a42bHieu<p>Hey Meh,</p> <p>Bluetooth Mesh has built in security.&nbsp;Most&nbsp;transmissions are encrypted. As a matter of fact, it is encrypted in a manner that with it is difficult to sniff the packet contents even knowing the key.</p> <p>Nordic does&nbsp;have an Introduction to Bluetooth Mesh here:&nbsp;<a href="https://webinars.nordicsemi.com/introduction-to-bluetooth-mesh-4">https://webinars.nordicsemi.com/introduction-to-bluetooth-mesh-4</a>.<br />Besides that, the Bluetooth SIG itself&nbsp;provides a study guide for Bluetooth Mesh:&nbsp;<a href="https://www.bluetooth.com/blog/bluetooth-mesh-developer-study-guide-v2-0/">https://www.bluetooth.com/blog/bluetooth-mesh-developer-study-guide-v2-0/</a>.</p> <p>Finally, proper documentation of the encryption can be found in the Bluetooth Mesh specifications:&nbsp;<a href="https://www.bluetooth.com/specifications/specs/?types=adopted&amp;keyword=mesh&amp;filter=">https://www.bluetooth.com/specifications/specs/?types=adopted&amp;keyword=mesh&amp;filter=</a></p><div style="clear:both;"></div>