3 .\" @(#)skey.1 1.1 10/28/93
6 .TH KEY 1 "28 October 1993"
9 S/key \- A procedure to use one time passwords for accessing computer systems.
12 is a procedure for using one time password to authenticate access to
13 computer systems. It uses 64 bits of information transformed by the
14 MD4 algorithm. The user supplies the 64 bits in the form of 6 English
15 words that are generated by a secure computer.
16 Example use of the S/key program
23 Enter password: <your secret password is entered here>
25 OMEN US HORN OMIT BACK AHOY
29 The programs that are part of the S/Key system are keyinit, key, and
30 keyinfo. Keyinit is used to get your ID set up, key is
31 used to get the one time password each time,
32 keyinfo is used to extract information from the S/Key database.
34 When you run "keyinit" you inform the system of your
35 secret password. Running "key" then generates the
36 one-time passwords, and also requires your secret
37 password. If however, you misspell your password
38 while running "key", you will get a list of passwords
39 that will not work, and no indication about the problem.
41 Password sequence numbers count backward from 99. If you
42 don't know this, the syntax for "key" will be confusing.
44 You can enter the passwords using small letters, even
45 though the "key" program gives them in caps.
47 Macintosh and a general purpose PC use
50 Under FreeBSD, you can control, with /etc/skey.access, from which
51 hosts and/or networks the use of S/Key passwords is obligated.
59 Phil Karn, Neil M. Haller, John S. Walden, Scott Chasin