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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.
     Running 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
     indication 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
     program 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 11.0-PRERELEASE        October 28, 1993        FreeBSD 11.0-PRERELEASE

NAME | DESCRIPTION | SEE ALSO | AUTHORS

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