CC2340R5: How to generate the key of the basic_ble_oad_dual_image and MCUboot projects?

Tool/software:

Hi friend,

I am use MCU of CC2340R5 and SDK simplelink_lowpower_f3_sdk_8_10_00_55. I use the project of basic_ble_oad_dual_image. I have some questions.
1: Does the basic_ble_oad_dual_image project include MCUboot? Or are the two projects separate?
2: Which key does the basic_ble_oad_dual_image and secure MCUboot projects use? How do I change the keys for both parties? Where is the key?
3: How to generate the key?
4: MCUboot contains a security key. How to change the key?
5: If MCUboot contains a security key, can others refresh MCUboot to replace the new key?

Thank you in advance.

Ted Wu