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KEY(1) FreeBSD General Commands Manual KEY(1)
NAME
S/key -- a procedure to use one time passwords for accessing computer
systems
DESCRIPTION
S/key is a procedure for using one time password to authenticate access
to computer systems. It uses 64 bits of information transformed by the
MD4 algorithm. The user supplies the 64 bits in the form of 6 English
words that are generated by a secure computer. Example use of the S/key
program key:
>key 99 th91334
Enter password: <your secret password is entered here>
OMEN US HORN OMIT BACK AHOY
>
The programs that are part of the S/key system are keyinit, key, and
keyinfo. Keyinit is used to get your ID set up, key is used to get the
one time password each time, keyinfo is used to extract information from
the S/key database.
When you run keyinit you inform the system of your secret password. Run-
ning key then generates the one-time passwords, and also requires your
secret password. If however, you misspell your password while running
key, you will get a list of passwords that will not work, and no indica-
tion about the problem.
Password sequence numbers count backward from 99. If you don't know
this, the syntax for key will be confusing.
You can enter the passwords using small letters, even though the key pro-
gram gives them in caps.
Macintosh and a general purpose PC use are available.
Under FreeBSD, you can control, with /etc/skey.access, from which hosts
and/or networks the use of S/key passwords is obligated.
SEE ALSO
key(1), keyinfo(1), keyinit(1), skey.access(5)
AUTHORS
Phil Karn
Neil M. Haller
John S. Walden
Scott Chasin
FreeBSD 4.9 October 28, 1993 FreeBSD 4.9
Федотов А.М.
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