RPM Packaging Guide
https://rpm-packaging-guide.github.io17.04.2020 · When using the --sign option for rpmbuild, use only -bb or -ba options for package building. -ba option mean build binary and source packages. To verify the signature of a package, use the rpm command with --checksig option. For example: $ rpm --checksig blather-7.9-1.i386.rpm blather-7.9-1.i386.rpm: size pgp md5 OK.