.\"
.\" This source code is no longer held under any constraint of USA
.\" `cryptographic laws' since it was exported legally.  The cryptographic
.\" functions were removed from the code and a "Bones" distribution was
.\" made.  A Commodity Jurisdiction Request #012-94 was filed with the
.\" USA State Department, who handed it to the Commerce department.  The
.\" code was determined to fall under General License GTDA under ECCN 5D96G,
.\" and hence exportable.  The cryptographic interfaces were re-added by Eric
.\" Young, and then KTH proceeded to maintain the code in the free world.
.\"
.\"Copyright (C) 1989 by the Massachusetts Institute of Technology
.\"
.\"Export of this software from the United States of America is assumed
.\"to require a specific license from the United States Government.
.\"It is the responsibility of any person or organization contemplating
.\"export to obtain such a license before exporting.
.\"
.\"WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
.\"distribute this software and its documentation for any purpose and
.\"without fee is hereby granted, provided that the above copyright
.\"notice appear in all copies and that both that copyright notice and
.\"this permission notice appear in supporting documentation, and that
.\"the name of M.I.T. not be used in advertising or publicity pertaining
.\"to distribution of the software without specific, written prior
.\"permission.  M.I.T. makes no representations about the suitability of
.\"this software for any purpose.  It is provided "as is" without express
.\"or implied warranty.
.\"
.\"	$OpenBSD: kinit.1,v 1.4 1998/02/25 15:50:59 art Exp $
.TH KINIT 1 "Kerberos Version 4.0" "MIT Project Athena"
.SH NAME
kinit \- Kerberos login utility
.SH SYNOPSIS
.B kinit
[
.B \-irvl
]
.SH DESCRIPTION
The
.I kinit
command is used to login to the
Kerberos
authentication and authorization system.
Note that only registered
Kerberos
users can use the
Kerberos
system.
For information about registering as a
Kerberos
user,
see the
.I kerberos(1)
manual page.
.PP
If you are logged in to a workstation that is running the
.I toehold
service,
you do not have to use
.I kinit.
The
.I toehold
login procedure will log you into
Kerberos
automatically.
You will need to use
.I kinit
only in those situations in which
your original tickets have expired.
(Tickets expire in about a day.)
Note as well that
.I toehold
will automatically destroy your tickets when you logout from the workstation.
.PP
When you use
.I kinit
without options,
the utility
prompts for your username and Kerberos password,
and tries to authenticate your login with the local
Kerberos
server.
.PP
If
Kerberos
authenticates the login attempt,
.I kinit
retrieves your initial ticket and puts it in the ticket file specified by
your KRBTKFILE environment variable.
If this variable is undefined,
your ticket will be stored in the
.IR /tmp
directory,
in the file
.I tktuid ,
where
.I uid
specifies your user identification number.
.PP
If you have logged in to
Kerberos
without the benefit of the workstation
.I toehold
system,
make sure you use the
.I kdestroy
command to destroy any active tickets before you end your login session.
You may want to put the
.I kdestroy
command in your
.I \.logout
file so that your tickets will be destroyed automatically when you logout.
.PP
The options to
.I kinit
are as follows:
.TP 7
.B \-i
.I kinit
prompts you for a
Kerberos
instance.
.TP
.B \-r
.I kinit
prompts you for a
Kerberos
realm.
This option lets you authenticate yourself with a remote
Kerberos
server.
.TP
.B \-v
Verbose mode.
.I kinit
prints the name of the ticket file used, and
a status message indicating the success or failure of
your login attempt.
.TP
.B \-l
.I kinit
prompts you for a ticket lifetime in minutes.  Due to protocol
restrictions in Kerberos Version 4, this value must be between 5 and
1275 minutes.
.SH SEE ALSO
.PP
kerberos(1), kdestroy(1), klist(1), toehold(1)
.SH BUGS
The
.B \-r
option has not been fully implemented.
.SH AUTHORS
Steve Miller, MIT Project Athena/Digital Equipment Corporation
.br
Clifford Neuman, MIT Project Athena