1 c9d04e09 2005-02-14 devnull .TH PASSWD 1
 2 c9d04e09 2005-02-14 devnull .SH NAME
 3 c9d04e09 2005-02-14 devnull passwd, netkey \- change user password
 4 c9d04e09 2005-02-14 devnull .SH SYNOPSIS
 5 c9d04e09 2005-02-14 devnull .B passwd
 6 c9d04e09 2005-02-14 devnull [
 7 c9d04e09 2005-02-14 devnull .I username\fR[@\fPdomain\fR]\fP
 8 c9d04e09 2005-02-14 devnull ]
 9 c9d04e09 2005-02-14 devnull .PP
10 c9d04e09 2005-02-14 devnull .B netkey
11 c9d04e09 2005-02-14 devnull .SH DESCRIPTION
12 c9d04e09 2005-02-14 devnull .I Passwd
13 c9d04e09 2005-02-14 devnull changes the invoker's Plan 9 password and/or APOP secret.
14 c9d04e09 2005-02-14 devnull The Plan 9 password is used to login to a terminal while
15 c9d04e09 2005-02-14 devnull the APOP secret is used for a number of external services:
16 c9d04e09 2005-02-14 devnull POP3, IMAP, and VPN access.  The optional argument specifies
17 c9d04e09 2005-02-14 devnull the user name and authentication domain to use if different
18 c9d04e09 2005-02-14 devnull than the one associated with the machine
19 c9d04e09 2005-02-14 devnull .I passwd
20 c9d04e09 2005-02-14 devnull is run on.
21 c9d04e09 2005-02-14 devnull .PP
22 c9d04e09 2005-02-14 devnull The program first prompts for the old Plan 9 password in the specified
23 c9d04e09 2005-02-14 devnull domain to establish
24 c9d04e09 2005-02-14 devnull identity.
25 c9d04e09 2005-02-14 devnull It then prompts for changes to the password and the
26 c9d04e09 2005-02-14 devnull secret.
27 c9d04e09 2005-02-14 devnull New passwords and secrets must be typed twice, to forestall mistakes.
28 c9d04e09 2005-02-14 devnull New passwords must be sufficiently hard to guess.
29 c9d04e09 2005-02-14 devnull They may be of any length greater than seven characters.
30 c9d04e09 2005-02-14 devnull .PP
31 c9d04e09 2005-02-14 devnull .I Netkey
32 c9d04e09 2005-02-14 devnull prompts for a password to encrypt network challenges.
33 c9d04e09 2005-02-14 devnull It is a substitute for a SecureNet box.
34 c9d04e09 2005-02-14 devnull .SH SOURCE
35 c9d04e09 2005-02-14 devnull .B \*9/src/cmd/netkey.c
36 c9d04e09 2005-02-14 devnull .br
37 c9d04e09 2005-02-14 devnull .B \*9/src/cmd/auth/passwd.c
38 c9d04e09 2005-02-14 devnull .SH "SEE ALSO"
39 d32deab1 2020-08-16 rsc .MR encrypt (3)
40 c9d04e09 2005-02-14 devnull .PP
41 c9d04e09 2005-02-14 devnull Robert Morris and Ken Thompson,
42 c9d04e09 2005-02-14 devnull ``UNIX Password Security,''
43 c9d04e09 2005-02-14 devnull .I AT&T Bell Laboratories Technical Journal
44 c9d04e09 2005-02-14 devnull Vol 63 (1984), pp. 1649-1672