The first time you run the graphical version of the Red Hat Update Agent, it prompts you to install the Red Hat GPG key. This key is required to authenticate the packages downloaded from Red Hat Network. If you run the command line version the first time you start Red Hat Update Agent, you must install the Red Hat GPG key manually. If you do not have it installed, you will see the following message:

         Your GPG keyring does not contain the Red Hat, Inc. public key. Without it, you will be unable to verify that packages Update Agent downloads are securely signed by Red Hat. 
      

The method for installing the key varies depending on your version of RPM. Starting with version 4.1, which shipped with Red Hat Enterprise Linux 3, you may use RPM to import GPG keys. Issue the following command at a shell prompt as root:

         rpm --import /usr/share/doc/rpm-4.1/RPM-GPG-KEY 
      

For older versions of RPM, such as the one that came with Red Hat Enterprise Linux 2.1, use the gpg command (as root):

         /usr/bin/gpg --import /usr/share/rhn/RPM-GPG-KEY 
      

To download the Red Hat GPG key first, you may obtain it from https://www.redhat.com/security/team/key.html . Here's an example:

         Type bits/keyID Date User ID pub 1024D/650D5882 2001-11-21 Red Hat, Inc. (Security Response Team) sub 2048g/7EAB9AFD 2001-11-21 -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.2.1 (GNU/Linux) mQGiBDv70vQRBADh701rf8WUzDG88kqlV/N5KQ1PF0amnODB/1EeuAD7n6bCBRmV ekQWJCdfab0Rf1S+VsFg6IAAAmDIarVnacTLQzqCdGJqTpXm/rGVpLv+mCh+OmT9 QRFbjSzB0uPJOpiIvJwSS00D/wJ8XKzHkVNgW3DiJ9Qz2BHYszU2ISI6FwCgxY6d IVjWT5jblkLNjtD3+fR024ED/i0e2knetTX3S9LjC+HdGvP8Eds92Ti2CnJLaFJk Rp749PucnK9mzxPcO2jSHgdtjWAXst/st+gWFVbFmkjBQDVSd00B/xEwI1T1+LN8 V7R8BElBmg99IlJmDvA2BI/seXvafhzly9bxSHScFnceco/Az9umIs3NXwv3/yOm ZakDBAC6SAGHBmpVkOdeXJDdb4LcbEhErFU3CpRCjZ6AOnFuiV1MGdulZXvEUgBA I6/PDE5nBHfZY3zPjyLPZVtgYioJpZqcRIx/g+bX2O8kPqvJEuZ19tLCdykfZGpy bsV7QdSGqBk3snNOizmFj543RaHyEbnwKWbNADhujWMeUAxN+7Q8UmVkIEhhdCwg SW5jLiAoU2VjdXJpdHkgUmVzcG9uc2UgVGVhbSkgPHNlY2FsZXJ0QHJlZGhhdC5j b20+iFcEExECABcFAj3GczYFCwcKAwQDFQMCAxYCAQIXgAAKCRBeVICDZQ1YghAU AJoCeQfuMR2dKyLft/10O6qUs+MNLQCggJgdO8MUO2y11TWID3XOYgyQG+2InAQT AQIABgUCPtyYpQAKCRDurUz9SaVj2e97A/0b2s7OhhAMljNwMQS4I2UWVGbgtxdu D+yBcG/3mwL76MJVY7aX+NN/tT9yDGU+FSiQZZCL/4OFOHMvjpcDqfJY+zpTlBii ZMAPJWTs2bB+0QaXxUgWlwW84GVf2rA6RSbvMLTbDjTH8t7J1RGP9zAqu8SgraTA QbQdao6TNxVt+ohGBBMRAgAGBQI+3LjCAAoJECGRgM3bQqYOf5MAoIjiJDe+hDOj 9+jlR0qDs9lIi/C2AJ9SBBfd4A8hyR4z3lY7e0LzjWF51LkCDQQ7+9O3EAgA8tMs xdUmuTfA+X78fMXh7LCvrL4Hi28CqvNM+Au81XJjDLNawZvpVmFlMmd9h0Xb5Jt2 BZWLR13rcDUByNdw1EWhVAzCz6Bp9Z3MIDhcP00iIBctIHn7YP9fi5vV0G03iryT XE01mhWoBlC233wr3XHwsqxFfZzaCZqqNKTl0+PNfEAIzJRgtYiW8nzFTPpIR05E oRn6EvmQfayOF2uYDX9Sk//lOD7T7RLtKjM/hPW/9NoCGwwROaG+VUzVv4aelh1L dJGEjpFtdxcrOUMD8xbkuGMznu0mpDI+J2BUDh5n57yOyEMaGrQ0jfY1ZqdqDvZg osY1ZHa6KlmuCWNTnwADBQf/XYhCicp6iLetnPv6lYtyRfFRpnK98w3br+fThywC t81P2nKv8lio6OsRbksGc1gX8Zl6GoHQYfDe7hYsCHZPoWErobECFds5E9M7cmzV TTyNTvrELrs07jyuPb4Q+mHcsYPILGR3M+rnXKGjloz+05kOPRJaBEBzP6B8SZKy QNqEfTkTYU4Rbhkzz/UxUxZoRZ+tqVjNbPKFpRraiQrUDsZFbgksBCzkzd0YURvi CegO2K7JPKbZJo6eJA10qiBQvAx2EUijZfxIKqZeLx40EKMaL7Wa2CM/xmkQmCgg Hyu5bmLSMZ7cxFSWyXOst78dehCKv9WyPxHV3m4iANWFL4hGBBgRAgAGBQI7+9O3 AAoJEF5UgINlDViCKWcAoMCeYStWVKXJTytzHEL6Wl8rXr8WAKCHuapJIA4/eFsf 4ciWtjY8cO0v8Q== =yOVZ -----END PGP PUBLIC KEY BLOCK----- 
      

Save the text file and import it into your keyring using the method applicable to your version of RPM.