srptool(1) User Commands srptool(1)
NAME
srptool - GnuTLS SRP tool
SYNOPSIS
srptool [-flags] [-flag [value]] [--option-name[[=| ]value]]
All arguments must be options.
DESCRIPTION
Simple program that emulates the programs in the Stanford SRP (Secure
Remote Password) libraries using GnuTLS. It is intended for use in
places where you don't expect SRP authentication to be the used for
system users.
In brief, to use SRP you need to create two files. These are the
password file that holds the users and the verifiers associated with
them and the configuration file to hold the group parameters (called
tpasswd.conf).
OPTIONS
-d number, --debug=number
Enable debugging. This option takes an integer number as its
argument. The value of number is constrained to being:
in the range 0 through 9999
Specifies the debug level.
-i number, --index=number
specify the index of the group parameters in tpasswd.conf to
use. This option takes an integer number as its argument. The
default number for this option is:
3
-u string, --username=string
specify a username.
-p string, --passwd=string
specify a password file.
-s number, --salt=number
specify salt size. This option takes an integer number as its
argument.
--verify
just verify the password..
Verifies the password provided against the password file.
-v string, --passwd-conf=string
specify a password conf file..
Specify a filename or a PKCS #11 URL to read the CAs from.
--create-conf=string
Generate a password configuration file..
This generates a password configuration file (tpasswd.conf) con-
taining the required for TLS parameters.
-h, --help
Display usage information and exit.
-!, --more-help
Pass the extended usage information through a pager.
-v [{v|c|n --version [{v|c|n}]}]
Output version of program and exit. The default mode is `v', a
simple version. The `c' mode will print copyright information
and `n' will print the full copyright notice.
EXAMPLES
To create tpasswd.conf which holds the g and n values for SRP protocol
(generator and a large prime), run:
$ srptool --create-conf /etc/tpasswd.conf
This command will create /etc/tpasswd and will add user 'test' (you
will also be prompted for a password). Verifiers are stored by default
in the way libsrp expects.
$ srptool --passwd /etc/tpasswd --passwd-conf /etc/tpasswd.conf -u test
This command will check against a password. If the password matches the
one in /etc/tpasswd you will get an ok.
$ srptool --passwd /etc/tpasswd --passwd-conf /etc/tpasswd.conf --verify -u test
EXIT STATUS
One of the following exit values will be returned:
0 (EXIT_SUCCESS)
Successful program execution.
1 (EXIT_FAILURE)
The operation failed or the command syntax was not valid.
70 (EX_SOFTWARE)
libopts had an internal operational error. Please report it to
autogen-users@lists.sourceforge.net. Thank you.
SEE ALSO
gnutls-cli-debug(1), gnutls-serv(1), srptool(1), psktool(1),
certtool(1)
AUTHORS
Nikos Mavrogiannopoulos, Simon Josefsson and others; see
/usr/share/doc/gnutls/AUTHORS for a complete list.
COPYRIGHT
Copyright (C) 2000-2019 Free Software Foundation, and others all
rights reserved. This program is released under the terms of the GNU
General Public License, version 3 or later.
BUGS
Please send bug reports to: bugs@gnutls.org
NOTES
This manual page was AutoGen-erated from the srptool option defini-
tions.
3.6.5 19 Feb 2018 srptool(1)
gnutls 3.6.5 - Generated Sat Jan 19 18:28:30 CST 2019