April 14, 2005 KTUTIL 8

### NAME

ktutil - manage Kerberos keytabs

### SYNOPSIS

ktutil --keytab=keytab [-k keytab Xo] [-v | --verbose] [--version] [-h | --help] command [args]

### DESCRIPTION

ktutil is a program for managing keytabs. Supported options:

Xo
  -v, --verbose Verbose output.

command can be one of the following:

add Xo
  [-p principal] [--principal=principal] [-V kvno] [--kvno=kvno] [-e enctype] [--enctype=enctype] [-w password] [--password=password] [-r] [--random] [-s] [--no-salt] [-H] [--hex] Adds a key to the keytab. Options that are not specified will be prompted for. This requires that you know the password or the hex key of the principal to add; if what you really want is to add a new principal to the keytab, you should consider the get command, which talks to the kadmin server.

change Xo
  [-r realm] [--realm=realm] [--a host] [--admin-server=host] [--s port] [--server-port=port] Update one or several keys to new versions. By default, use the admin server for the realm of a keytab entry. Otherwise it will use the values specified by the options.

  If no principals are given, all the ones in the keytab are updated.

copy Xo
  keytab-src keytab-dest Copies all the entries from keytab-src to keytab-dest.

get Xo
  [-p admin principal] [--principal=admin principal] [-e enctype] [--enctypes=enctype] [-r realm] [--realm=realm] [-a admin server] [--admin-server=admin server] [-s server port] [--server-port=server port] principal ... For each principal, generate a new key for it (creating it if it doesn't already exist), and put that key in the keytab.

  If no realm is specified, the realm to operate on is taken from the first principal.

list Xo
  [--keys] [--timestamp] List the keys stored in the keytab.

remove Xo
  [-p principal] [--principal=principal] [-V kvno] [--kvno=kvno] [-e enctype] [--enctype=enctype] Removes the specified key or keys. Not specifying a kvno removes keys with any version number. Not specifying an enctype removes keys of any type.

rename Xo
  from-principal to-principal Renames all entries in the keytab that match the from-principal to to-principal.

purge Xo
  [--age=age] Removes all old versions of a key for which there is a newer version that is at least age (default one week) old.

srvconvert

srv2keytab Xo
  [-s srvtab] [--srvtab=srvtab] Converts the version 4 srvtab in srvtab to a version 5 keytab and stores it in keytab. Identical to:

        ktutil copy
        krb4:srvtab
        keytab

srvcreate

key2srvtab Xo
  [-s srvtab] [--srvtab=srvtab] Converts the version 5 keytab in keytab to a version 4 srvtab and stores it in srvtab. Identical to:

        ktutil copy
        keytab
        krb4:srvtab

### SEE ALSO

kadmin(8)