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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	9.3		       October 28, 1993			   FreeBSD 9.3

NAME | DESCRIPTION | SEE ALSO | AUTHORS

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