opiepasswd
will initialize the system information to allow one to use OPIE to login.
opiepasswd
is downward 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 calculator. 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 console; 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.
Bellcore's S/Key was written by Phil Karn, Neil M. Haller, and John S. Walden
of Bellcore. 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:
