NAME

       k5srvutil - host key table (keytab) manipulation utility

SYNOPSIS

       k5srvutil operation [-i] [-f filename] [-e keysalts]

DESCRIPTION

       k5srvutil  allows  an administrator to list keys currently in a keytab, to obtain new keys
       for a principal currently in a keytab, or to delete non-current keys from a keytab.

       operation must be one of the following:

       list   Lists the keys in a keytab, showing version number and principal name.

       change Uses the kadmin protocol to update  the  keys  in  the  Kerberos  database  to  new
              randomly-generated  keys,  and updates the keys in the keytab to match.  If a key's
              version number doesn't match the version number stored  in  the  Kerberos  server's
              database,  then  the  operation will fail.  If the -i flag is given, k5srvutil will
              prompt for confirmation before changing each key.  If the -k option is  given,  the
              old  and  new  keys will be displayed.  Ordinarily, keys will be generated with the
              default encryption types and key salts.  This can be overridden with the -e option.
              Old  keys are retained in the keytab so that existing tickets continue to work, but
              delold should be used after such tickets expire, to prevent attacks against the old
              keys.

       delold Deletes  keys that are not the most recent version from the keytab.  This operation
              should be used some time after  a  change  operation  to  remove  old  keys,  after
              existing  tickets  issued  for  the service have expired.  If the -i flag is given,
              then k5srvutil will prompt for confirmation for each principal.

       delete Deletes particular keys in the keytab, interactively prompting for each key.

       In all cases, the default keytab is used unless this is overridden by the -f option.

       k5srvutil uses the kadmin(1) program to edit the keytab in place.

SEE ALSO

       kadmin(1), ktutil(1)

AUTHOR

       MIT

COPYRIGHT

       1985-2017, MIT