I am trying to install kube-bench_0.6.2_linux_amd64.rpm in Suse Linux but it is failing

[vinodboruah]

I downloaded the package from https://github.com/aquasecurity/kube-bench/releases/download/v0.6.2/kube-bench_0.6.2_linux_amd64.rpm -o kube-bench_0.6.2_linux_amd64.rpm following the documentation - https://github.com/aquasecurity/kube-bench/blob/main/docs/installation.md

After successful download, I fired the following command and it gives me the following
vm2047:~/vinod # zypper in -y kube-bench_0.6.2_linux_amd64.rpm Refreshing service 'Basesystem_Module_x86_64'.
Refreshing service 'Containers_Module_x86_64'.
Refreshing service 'Desktop_Applications_Module_x86_64'.
Refreshing service 'Legacy_Module_x86_64'.
Refreshing service 'Public_Cloud_Module_x86_64'.
Refreshing service 'Python_2_Module_x86_64'.
Refreshing service 'SUSE_Linux_Enterprise_High_Availability_Extension_x86_64'.
Refreshing service 'SUSE_Linux_Enterprise_Server_x86_64'.
Refreshing service 'SUSE_Package_Hub_x86_64'.
Refreshing service 'Server_Applications_Module_x86_64'.
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following NEW package is going to be installed:
kube-bench

The following package has no support information from its vendor:
kube-bench

1 new package to install.
Overall download size: 7.6 MiB. Already cached: 0 B. After the operation, additional 17.5 MiB will be used.
Continue? [y/n/v/...? shows all options] (y): y
Retrieving package kube-bench-0.6.2-1.x86_64 (1/1), 7.6 MiB ( 17.5 MiB unpacked)
kube-bench_0.6.2_linux_amd64.rpm:
Package is not signed!

kube-bench-0.6.2-1.x86_64 (Plain RPM files cache): Signature verification failed [6-File is unsigned]
Abort, retry, ignore? [a/r/i] (a): a
Problem occurred during or after installation or removal of packages:
Installation has been aborted as directed.