.TH AUTH 8
.SH NAME
changeuser, convkeys, convkeys2, printnetkey, status, enable, disable, authsrv, guard.srv, wrkey, login, newns, none \- maintain or query authentication databases
.SH SYNOPSIS
.B auth/changeuser
.RB [ -np ]
.I user
.PP
.B auth/convkeys
.RB [ -p ]
.I keyfile
.PP
.B auth/convkeys2
.RB [ -p ]
.I keyfile
.PP
.B auth/printnetkey
.I user
.PP
.B auth/status
.I user
.PP
.B auth/enable
.I user
.PP
.B auth/disable
.I user
.PP
.B auth/authsrv
.PP
.B auth/guard.srv
.PP
.B auth/wrkey
.PP
.B auth/login
.I user
.PP
.B auth/newns
[
.B -ad
] [
.B -n
.I namespace
]
.I command
.I arg
\&...
.PP
.B auth/none
[
.B -n
.I namespace
]
.I command
.I arg
\&...
.SH DESCRIPTION
These administrative commands run only on the authentication server.
.IR Changeuser
manipulates an authentication database file system served by
.IR keyfs (4)
and used by file servers.
There are two authentication databases,
one holding information about Plan 9 accounts
and one holding SecureNet keys.
A
.I user
need not be installed in both databases
but must be installed in the Plan 9 database to connect to a Plan 9 service.
.PP
.I Changeuser
installs or changes
.I user
in an authentication database.
It does not install a user on a Plan 9 file server; see
.IR fs (8)
for that.
.PP
Option
.B -p
installs
.I user
in the Plan 9 database.
.I Changeuser
asks twice for a password for the new
.IR user .
If the responses do not match
or the password is too easy to guess
the
.I user
is not installed.
.I Changeuser
also asks for an APOP secret.
This secret is used in the APOP (RFC1939),
CRAM (RFC2195), and
Microsoft challenge/response protocols used for
POP3, IMAP, and VPN access.
.PP
Option
.B -n
installs
.I user
in the SecureNet database and prints out a key for the SecureNet box.
The key is chosen by
.IR changeuser .
.PP
If neither option
.B -p
or option
.B -n
is given,
.I changeuser
installs the
.I user
in the Plan 9 database.
.PP
.I Changeuser
prompts for
biographical information such as email address,
user name, sponsor and department number and
appends it to the file
.B /adm/netkeys.who
or
.BR /adm/keys.who .
.PP
.I Convkeys
re-encrypts the key file
.IR keyfile .
Re-encryption is performed in place.
Without the
.B -p
option
.I convkeys
uses the key stored in NVRAM
to decrypt the file, and encrypts it using the new key.
By default, 
.I convkeys
prompts twice for the new password.
The
.B -p
forces
.I convkeys
to also prompt for the old password.
The format of
.I keyfile
is described in
.IR keyfs (4).
.PP
The format of the key file changed between Release 2
and 3 of Plan 9.
.I Convkeys2
is like
.IR convkeys .
However, in addition to rekeying, it converts from
the previous format to the Release 3 format.
.PP
.I Printnetkey
displays the network key as it should be entered into the
hand-held Securenet box.
.PP
.I Status
is a shell script that prints out everything known about
a user and the user's key status.
.PP
.I Enable/disable
are shell scripts that enable/disable both the Plan 9 and
Netkey keys for individual users.
.PP
.I Authsrv
is the program, run only on the authentication server, that handles ticket requests
on TCP port 567.
It is started
by an incoming call to the server
requesting a conversation ticket; its standard input and output
are the network connection.
.I Authsrv
executes the authentication server's end of the appropriate protocol as
described in
.IR authsrv (6).
.PP
.I Guard.srv
is similar.  It is called whenever a foreign (e.g. Unix) system wants
to do a SecureNet challenge/response authentication.
.PP
The remaining commands need not be run on an authentication server.
.PP
.I Wrkey
prompts for a machine key, host owner, and host domain and stores them in
local non-volatile RAM.
.PP
.I Login
allows a user to change his authenticated id to
.IR user .
.I Login
sets up a new namespace from
.BR /lib/namespace ,
starts a
.IR factotum (4)
under the new id and
.IR exec s
.IR rc (1)
under the new id.
.PP
.I Newns
sets up a new namespace from
.I namespace
(default
.BR /lib/namespace )
and
.IR exec s
its arguments.
If there are no arguments, it
.IR exec s
.BR /bin/rc .
Under
.BR -a ,
.I newns
adds to the current namespace instead of constructing a new one.
The
.BR -d
option enables debugging output.
.PP
.I None
sets up a new namespace from
.I namespace
(default
.BR /lib/namespace )
as the user
.I none
and
.IR exec s
its arguments under the new id.
If there are no arguments, it
.IR exec s
.BR /bin/rc .
It's an easy way to run a command as
.IR none .
.SH FILES
.TF /sys/lib/httppasswords
.TP
.B /lib/ndb/auth
Speaksfor relationships and mappings for
RADIUS server id's.
.TP
.B /adm/keys.who
List of users in the Plan 9 database.
.TP
.B /adm/netkeys.who
List of users in  the SecureNet database.
.TP
.B /sys/lib/httppasswords
List of realms and passwords for HTTP access.
.SH SOURCE
.B /sys/src/cmd/auth
.SH "SEE ALSO"
.I readnvram
in
.IR authsrv (2),
.IR keyfs (4),
.IR securenet (8)
.SH BUGS
Only CPU kernels permit changing userid.