Manufacturer data encryption

[ting²]

Hi,

I am using the sofdevice s110. I want to encrypt my manufacturer_data. However , the type of the advertising is BLE_GAP_ADV_TYPE_ADV_NONCONN_IND. I tried : nrf_ecb_init() and nrf_ecb_crypt(dest_buf,src_buf), it is not working.

1. I cannot use these functions, is it because that the ECB register is restricted when we use the softdevice?

2. In this case, do I have another way to encrypt my manufacturer_data?

Thanks

[Ulrich Myhre]

Hi,

1. That is correct. The module is restricted and must be accessed through the SoftDevice.

2. You should use the function sd_ecb_block_encrypt() instead. It takes a nrf_ecb_hal_data_t which contains a cleartext and encryption key field used an inputs. The encrypted data will be stored in the ciphertext field.

[ting²]

thank you! It is working.