Why is this RPM package for CentOS not signed?

CentOS 6.4

yum localinstall *.rpm

Package libobasis4.2-core03-4.2.5.2-2.x86_64.rpm is not signed

Why is the package not signed?

Why is the package not signed?

It is possibly just an oversight (I don’t know). According to this mailing list message the same problem occurred back in 2011.

Thanks for the feedback.