OPIEKEY(1)OPIEKEY(1)NAMEopiegen - Example OPIE-based OTP generator
SYNOPSISopiegen
[ challenge ]
DESCRIPTIONopiegen takes a properly formed OTP challenge either
from the command line or from standard input, prompts
the user for a secret pass phrase, and generates an
OTP response to that challenge. It is intended as an
example for programmers of how a simple OTP generator
can be built. Users should probably use the opiekey
program instead.
EXAMPLE
wintermute$ opiegen otp-md5 495 wi01309
Secret Pass Phrase:
GILL HUED GOES CHUM LIEU VAIN
wintermute$
BUGSopiegen(1) can lull a user into revealing his/her
password when remotely logged in, thus defeating the
purpose of OPIE. This is especially a problem with
xterm. opiegen(1) implements simple checks to reduce
the risk of a user making this mistake. Better checks
are needed.
SEE ALSOopiekey(1), opieserv(1), opie(4), opiepasswd(1),
opieinfo(1), opiesu(1), opielogin(1), opieftpd(8),
opiekeys(5), opieaccess(5)AUTHOR
The opiegen(1) program was created by Craig Metz for
OPIE 2.2.
Bellcore's S/Key was written by Phil Karn, Neil M.
Haller, and John S. Walden of Bellcore. OPIE was cre‐
ated 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" mail‐
ing list. To join, send an email request to:
skey-users-request@thumper.bellcore.com
7th Edition February 20, 1996 OPIEKEY(1)