$home/manuals/plan9_2nd/1/passwd

PASSWD(1)                   General Commands Manual                  PASSWD(1)



NAME
       passwd, netkey - change user password

SYNOPSIS
       passwd

       netkey

DESCRIPTION
       Passwd  changes the invoker's Plan 9 password.  The program prompts for
       the old password and then for the new one.  The new  password  must  be
       typed twice, to forestall mistakes.  New passwords must be sufficiently
       hard to guess.  They may of any length greater than seven characters.

       Netkey uses the password to encrypt network challenges.  It is  a  sub‐
       stitute for a SecureNet box.

       These  commands  may  be  run only on a terminal, to avoid transmitting
       clear text passwords over the network.

FILES
       /dev/key

SOURCE
       /sys/src/cmd/auth/passwd.c
       /sys/src/cmd/auth/netkey.c

SEE ALSO
       encrypt(2), cons(3), securenet(8)

       Robert Morris and Ken Thompson, ``UNIX Password Security,''  AT&T  Bell
       Laboratories Technical Journal Vol 63 (1984), pp. 1649-1672



                                                                     PASSWD(1)