NAME
srptool - Simple SRP password tool
SYNOPSIS
srptool [options]
DESCRIPTION
Very simple program that emulates the programs in the Stanford SRP
(Secure Remote Password) libraries using GNU TLS. 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
--bits BITS
specify the number of bits for prime numbers (used only when the
--create-conf option is used).
--create-conf FILE
Generate a tpasswd.conf file.
-h, --help
Prints a short reminder of the command line options.
-i, --index INDEX
Specify the index of the parameters in tpasswd.conf to use.
-p, --passwd FILE
Specify a password file.
--passwd-conf FILE
Specify a password configuration file.
-s, --salt SALT
Specify salt size for crypt algorithm.
-u, --username username
Specify username.
--verify
Just verify password.
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
AUTHOR
Nikos Mavroyanopoulos <nmav@gnutls.org> and others; see
/usr/share/doc/gnutls-bin/AUTHORS for a complete list.
This manual page was written by Ivo Timmermans <ivo@debian.org>, for
the Debian GNU/Linux system (but may be used by others).
February 21st 2005 srptool(1)