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integrity check on kernel for security

Hi, I want check the integrity of some packages... for example the kernel-core. As I know the kernel /boot/vmlinuz-4.11.8-300.fc26.x86_64 is a part of kernel-core:

[root@mypc ~]# rpm -ql kernel-core|grep -i boot
/boot/.vmlinuz-4.11.8-300.fc26.x86_64.hmac
/boot/System.map-4.11.8-300.fc26.x86_64
/boot/config-4.11.8-300.fc26.x86_64
/boot/initramfs-4.11.8-300.fc26.x86_64.img
/boot/vmlinuz-4.11.8-300.fc26.x86_64

then with the command rpm -V -v kernel-core I shoudl check the integrity of full kernel. But:

[root@mypc ~]# rpm -V -v kernel-core|grep -i boot
[root@mypc ~]#

Anyone could explain me why this ?