Provided by: openafs-fileserver_1.6.1-1_i386 bug

NAME

       KeyFile - Defines AFS server encryption keys

DESCRIPTION

       The KeyFile file defines the server encryption keys that the AFS server
       processes running on the machine use to decrypt the tickets presented
       by clients during the mutual authentication process. AFS server
       processes perform privileged actions only for clients that possess a
       ticket encrypted with one of the keys from the file. The file must
       reside in the /etc/openafs/server directory on every server machine.
       For more detailed information on mutual authentication and server
       encryption keys, see the OpenAFS Administration Guide.

       Each key has a corresponding a key version number that distinguishes it
       from the other keys. The tickets that clients present are also marked
       with a key version number to tell the server process which key to use
       to decrypt it. The KeyFile file must always include a key with the same
       key version number and contents as the key currently listed for the
       "afs/cell" principal in the associated Kerberos v5 realm or
       Authentication Database. (The principal "afs" may be used if the cell
       and realm names are the same, but adding the cell name to the principal
       is recommended even in this case. "afs" must be used as the principal
       name if the cell uses the Authentication Server rather than a Kerberos
       v5 realm.) The key must be a DES key; no stronger encryption type is
       supported.

       The KeyFile file is in binary format, so always use either the asetkey
       command or the appropriate commands from the bos command suite to
       administer it:

       o   The asetkey add or bos addkey command to add a new key.

       o   The asetkey list or bos listkeys command to display the keys.

       o   The asetkey delete or bos removekey command to remove a key from
           the file.

       The asetkey commands must be run on the same server as the KeyFile file
       to update. The bos commands may be run remotely. Normally, new keys
       should be added from a Kerberos v5 keytab using asetkey add.  bos
       addkey is normally only used if the Authentication Server is in use
       instead of a Kerberos v5 realm.

       In cells that use the Update Server to distribute the contents of the
       /etc/openafs/server directory, it is customary to edit only the copy of
       the file stored on the system control machine. Otherwise, edit the file
       on each server machine individually.

CAUTIONS

       The most common error caused by changes to KeyFile is to add a key that
       does not match the corresponding key for the Kerberos v5 principal or
       Authentication Server database entry. Both the key and the key version
       number must match the key for the corresponding principal, either
       "afs/cell" or "afs", in the Kerberos v5 realm or Authentication
       Database. For a Kerberos v5 realm, that principal must only have DES
       encryption types in the Kerberos KDC.

       In the unusual case of using bos addkey to add a key with a known
       password matching a password used to generate Kerberos v5 keys, the
       keys in the Kerberos v5 KDC database must use "afs3" salt, not the
       default Kerberos v5 salt. The salt doesn't matter for the more normal
       procedure of extracting a keytab and then adding the key using asetkey.

SEE ALSO

       asetkey(8), bos_addkey(8), bos_listkeys(8), bos_removekey(8),
       kas_setpassword(8), upclient(8), upserver(8)

       The OpenAFS Administration Guide at
       <http://docs.openafs.org/AdminGuide/>.

COPYRIGHT

       IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.
       It was converted from HTML to POD by software written by Chas Williams
       and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.