[U-Boot] [U-boot] mkimage -F parameter

Hi, experts:

It seems mkimage has supported signing a image.

So, I have a question about signed linux kernel image:

1. if kernel image is signed by mkimage tool.

Could uboot verify this signed linux kernel image bf jumping to its entry point function?

2. if uboot could verify the signed linux kernel image

how to management these different vendors' public keys in uboot code? Using env variable?

Best wishes,