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 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

       --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.

       -c, --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  Mavrogiannopoulos  <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)