@Jain Also, let's be real: samsung probably wouldn't like mtkclient either since it allows you to break the chain of trust.
The device I have uses Samsung Knox, but saying that the device firmware is trusted on that device is highly misleading at best - using the kamakiri exploit, anyone with physical access to the device can unlock the bootloader and modify the firmware, and if that's not stealthy enough you can flash a new bootloader too.