CC3220SF - Encrypted OTA firmware update

Hi, Currently I am using TICC3220SF along with AWS-FreeRTOS.

I was able to access the TI-Crypto API’s and tried AES-Encryption and decryption over the sample string of data and its working fine.

Planning to update Encrypted OTA Firmware to AWS Cloud and Decrypt the device side using OTA example code.

What are the steps I should follow to achieve the above scenario? In which phase OTA example code(device side) I should decrypt the firmware can someone please suggest it to me.

Regards,
Suresh

Does this page help? I think you have to select the encryption algorithm expected by the TI bootloader when signing the image.

Hi Richard,

Thanks for your response. As per TI_Response currently CC3220SF Bootloader doesn’t support Decryption options. So the application has to decrypt and process to the bootloader.

So, As from TI suggestion before Flashing Application need to decrypt the image. Please help me out from OTA example where I can enable TI Crypto API’s to decrypt the OTA- received MCU image.

Regards,
Suresh