skey(1) - NetBSD Manual Pages

Command:
Section:
Arch:
Collection:
>>>
SKEY(1)                     NetBSD Reference Manual                    SKEY(1)


NAME

     skey - interface to the S/Key one time password system


SYNOPSIS

     skey [-n count] [-p password] sequence# [/] key


DESCRIPTION

     S/key is a procedure for using one time passwords 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 skey:

         % skey  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:

     skeyinit(1)  used to setup your S/Key.

     skey         used to get the one time password each time.

     skeyinfo(1)  used to extract information from the S/Key database.  It
                  tells you what your next challenge will be.

     When you run skeyinit(1) you inform the system of your secret password.
     Running skey then generates the one-time passwords, and also requires
     your secret password.  If however, you misspell your password while run-
     ning skey(1),  you will get a list of passwords that will not work, and
     no indication about the problem.

     Password sequence numbers count backward from 99.  You can enter the
     passwords using small letters, even though skey(1) prints them capital-
     ized.

     The -n count argument asks for count password sequences to be printed out
     ending with the requested sequence number.

     The -p password allows the user to specify the S/key password on the com-
     mand line.


SEE ALSO

     skeyaudit(1),  skeyinfo(1),  skeyinit(1)


AUTHORS

     Phil Karn, Neil M. Haller, John S. Walden, Scott Chasin

NetBSD                          28 October 1993                              1