Package: nss-tools

"nss-tools" package binaries on CentOS:

/usr/bin/certutil /usr/bin/cmsutil /usr/bin/crlutil /usr/bin/modutil /usr/bin/pk12util /usr/bin/signtool /usr/bin/signver /usr/bin/ssltap

You may install this package on CentOS with yum install nss-tools