[nrf5_SDK_for_Mesh_v2.0.0_src]How to calculate the device key

Question

Hi, 
 nrf5_SDK_for_Mesh_v2.0.0_src 
 When complete provision a provisionee , provisioner will assign provisionee a mesh key and device key. 
 Now i want to know how to calculate the device key , any API can I use ? 
 Best Regards!

leonwj · Accepted Answer

hello, 
 From the SIG Mesh specification... 
 
 And within the nRF5 Mesh Stack... look into the light_switch_provisioner example (prov_utils.c) for the prov_utils_derive_keys function: 
 /* DeviceKey = k1(ECDHSecret, ProvisioningSalt, "prdk") */
 enc_k1(p_ctx->shared_secret, NRF_MESH_ECDH_SHARED_SECRET_SIZE,
 provisioning_salt,
 DEVICE_KEY_INFO, DEVICE_KEY_INFO_SIZE,
 p_device_key); 
 Regards,

[nrf5_SDK_for_Mesh_v2.0.0_src]How to calculate the device key

Top Replies