The general forms of rpm digital signature commands are
rpmkeys --import PUBKEY ...
rpmkeys {-K|--checksig} PACKAGE_FILE ...
The --checksig option checks all the digests and signatures contained in PACKAGE_FILE to ensure the integrity and origin of the package. Note that signatures are now verified whenever a package is read, and --checksig is useful to verify all of the digests and signatures associated with a package.
Digital signatures cannot be verified without a public key. An ASCII armored public key can be added to the rpm database using --import. An imported public key is carried in a header, and key ring management is performed exactly like package management. For example, all currently imported public keys can be displayed by:
rpm -qa gpg-pubkey*
Details about a specific public key, when imported, can be displayed by querying. Here's information about the Red Hat GPG/DSA key:
rpm -qi gpg-pubkey-db42a60e
Finally, public keys can be erased after importing just like packages. Here's how to remove the Red Hat GPG/DSA key
popt(3), rpm(8), rpmdb(8), rpmsign(8), rpm2cpio(8), rpmbuild(8), rpmspec(8),
rpmkeys --help - as rpm supports customizing the options via popt aliases it's impossible to guarantee that what's described in the manual matches what's available.
http://www.rpm.org/ <URL:http://www.rpm.org/>
Marc Ewing <marc@redhat.com> Jeff Johnson <jbj@redhat.com> Erik Troan <ewt@redhat.com> Panu Matilainen <pmatilai@redhat.com>