[an error occurred while processing this directive] FreeBSD Handbook : Users, groups and security : S/Key : Generating a single one-time password
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6.2.4. Generating a single one-time password

Now, to generate the one-time password needed to answer this login prompt, we use a trusted machine and the `key' program. (There are versions of the `key' program from DOS and Windows machines, and there is an S/Key desk accessory for Macintosh computers as well.) The command-line `key' program takes as its parameters the iteration count and seed; you can cut-and-paste right from the login prompt starting at ``key'' to the end of the line. Thus:

$ key 92 hi52030				) pasted from previous section
Reminder - Do not use this program while logged in via telnet or rlogin.
Enter secret password: 				) I typed my secret password
ADEN BED WOLF HAW HOT STUN

And in the other window:

s/key 92 hi52030				) from previous section
Password:
 (turning echo on)
Password:ADEN BED WOLF HAW HOT STUN
Last login: Wed Jun 28 15:31:00 from halloran-eldar.l
[etc.]

This is the easiest mechanism if you have a trusted machine.


FreeBSD Handbook : Users, groups and security : S/Key : Generating a single one-time password
Previous: Diversion: a login prompt
Next: Generating multiple one-time passwords [an error occurred while processing this directive]