How To Add AES128 bit encription in my Application

[Murugan]

Dear Nordic Team,

Thanks for supporting.

I want support for AES18bit Encription. Need basic tutorials and how to add my existing code.

[Jimmy Wong]

Hi,

you can use the crypto library.

https://jimmywongiot.com/2019/07/30/how-to-use-the-ecdh-and-aes128-for-the-data-encryption/

or the SDK 16.0 examples

examples\crypto\nrf_crypto\aes\aes_all_cli

[Murugan]

Thanks for reply. I will check and update you.

[Murugan]

This encryption is also affect advertising data ? 

[Amanda Hsieh]

Hi, 

I want support for AES18bit Encription. Need basic tutorials and how to add my existing code.

Please see the AES Example.  If you want to encrypt advertisement data you need to do that in your application. Something like this might do the trick: https://devzone.nordicsemi.com/f/nordic-q-a/13429/aes-encryption-with-sd

-Amanda H.

[Murugan]

Thanks for reply. I add AES128 encryption in my application (BLE_UART) both peripheral and central code. Peripheral side working good. But central side facing connection error. 

0> <info> app: BLE UART central example started.
0> <info> app: C42CA8A1FD6A
0> <info> app: ATT MTU exchange completed.
0> <info> app: Ble NUS max data length set to 0xF4(244)
0> <info> app: Discovery complete.
0> <info> app: Connected to device with Nordic UART Service.
0> <info> peer_manager_handler: Connection security failed: role: Central, conn_handle: 0x0, procedure: Bonding, error: 4352
0> <warning> peer_manager_handler: Disconnecting conn_handle 0.
0> <info> app: Disconnected.
0> <info> app: Erase bonds
0> <info> peer_manager_handler: All peers deleted.
0> <error> app: Fatal error

My SDK 15.2

Example : ble_app_uart_c and ble_app_uart 

please support solve this issue.