opiepasswd man page on FreeBSD

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OPIEPASSWD(1)				       OPIEPASSWD(1)

NAME
       opiepasswd -  Change or set a user's password for the
       OPIE authentication system.

SYNOPSIS
       opiepasswd [-v] [-h] [-c|-d] [-f]
       [-n initial_sequence_number ] [-s seed ] [  user_name
       ]

DESCRIPTION
       opiepasswd  will initialize the system information to
       allow one to use OPIE to login.	opiepasswd is  down‐
       ward  compatible with the keyinit(1) program from the
       Bellcore S/Key Version 1 distribution.

OPTIONS
       -v     Display the version number and compile-
	      time options, then exit.

       -h     Display a brief help message and exit.

       -c     Set  console  mode  where	 the  user is
	      expected to have secure access  to  the
	      system.  In  console  mode, you will be
	      asked to input your  password  directly
	      instead of having to use an OPIE calcu‐
	      lator. If you do not have secure access
	      to the system (i.e., you are not on the
	      system's console), you are volunteering
	      your  password  to  attackers  by using
	      this mode.

       -d     Disable OTP  logins  to  the  specified
	      account.

       -f     Force   opiepasswd  to  continue,	 even
	      where it normally	 shouldn't.  This  is
	      currently	 used  to force opiepasswd to
	      operate in  "console"  mode  even	 from
	      terminals	 it  believes to be insecure.
	      It can also  allow  users	 to  disclose
	      their secret pass phrases to attackers.
	      Use of the -f flag may be	 disabled  by
	      compile-time  option in your particular
	      build of OPIE.

       -n     Manually specify the  initial  sequence
	      number. The default is 499.

       -s     Specify  a non-random seed. The default
	      is to generate a	"random"  seed	using
	      the  first  two  characters of the host
	      name and five pseudo-random digits.

EXAMPLE
       Using opiepasswd from the console:

       wintermute$ opiepasswd -c
       Updating kebe:
       Reminder - Only use this method from the	 con‐
       sole; NEVER from remote. If you
       are using telnet, xterm, or a dial-in, type ^C
       now or exit with no password.
       Then run opiepasswd without the -c parameter.
       Using MD5 to compute responses.
       Enter old secret pass phrase:
       Enter new secret pass phrase:
       Again new secret pass phrase:

       ID kebe OPIE key is 499 be93564
       CITE JAN GORY BELA GET ABED
       wintermute$

       Using opiepasswd from remote:

       wintermute$ opiepasswd
       Updating kebe:
       Reminder: You need the response from your OPIE
       calculator.
       Old secret password:
	       otp-md5 482 wi93563
	       Response:  FIRM	BERN  THEE  DUCK MANN
       AWAY
       New secret password:
	       otp-md5 499 wi93564
	       Response: SKY FAN BUG HUFF GUS BEAT

       ID kebe OPIE key is 499 wi93564
       SKY FAN BUG HUFF GUS BEAT
       wintermute$

FILES
       /etc/opiekeys -- database of  key  information
       for the OPIE system.

SEE ALSO
       ftpd(8),	   login(1),	passwd(1),   opie(4),
       opiekey(1), opieinfo(1),	 su(1),	 opiekeys(5),
       opieaccess(5)

AUTHOR
       Bellcore's  S/Key  was  written	by Phil Karn,
       Neil M. Haller, and John S.  Walden  of	Bell‐
       core.  OPIE  was	 created  at  NRL  by Randall
       Atkinson, Dan McDonald, and Craig Metz.

       S/Key is a trademark  of	 Bell  Communications
       Research (Bellcore).

CONTACT
       OPIE  is	 discussed  on	the  Bellcore  "S/Key
       Users" mailing list. To join,  send  an	email
       request to:

       skey-users-request@thumper.bellcore.com

7th Edition	      January 10, 1995	       OPIEPASSWD(1)
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