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opiesu(1)

January 10, 1995

opie

Support for One-Time Passwords

NAME

opiesu - Replacement su(1) program that uses OPIE challenges

SYNOPSIS

opiesu [ -f ] [ -c ] [ user_name ]

DESCRIPTION

opiesu is a replacement for the su(1) program that issues OPIE challenges and uses OPIE responses. It is downward compatible with keysu(1) from the Bellcore S/Key Version 1 distribution and the su(1) program from the 4.3BSD Net/2 distribution.

OPTIONS

-f If the invoked shell is csh(1), this option prevents it from reading the ‘‘.cshrc’’ file. (The [f] option may be passed as a shell argument after the login name, so this option is redundant and obsolescent.)
-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.
user_name
The name of the user to become. The default is root.

EXAMPLE

wintermute$ opiesu kebe
otp-md5 498 wi910502
(OTP response required)
kebe’s password: (echo on)
kebe’s password: RARE GLEN HUGH BOYD NECK MOLL
wintermute#

FILES

/etc/opiekeys database of information for OPIE system.

AUTHOR

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:
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