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.

ENVIRONMENT

       See kerberos(7) for a description of Kerberos environment variables.

SEE ALSO

       kadmin(1), ktutil(1), kerberos(7)

AUTHOR

       MIT

COPYRIGHT

       1985-2021, MIT