gnutls-srpcrypt(1)                                          gnutls-srpcrypt(1)


       srptool - Simple SRP password tool


       gnutls-srpcrypt [options]


       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.


       --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/cost size for crypt algorithm.

       -u, --username username
              Specify username.

              Just verify password.


       To  create tpasswd.conf which holds the g and n values for SRP protocol
       (generator and a large prime), run:

              $ gnutls-srpcrypt --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.

              $ gnutls-srpcrypt --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.

              $ gnutls-srpcrypt --passwd /etc/tpasswd \
                  --passwd-conf /etc/tpasswd.conf --verify -u test


       Nikos     Mavroyanopoulos    <>    and    others;    see
       /usr/share/doc/gnutls-bin/AUTHORS for a complete list.

       This manual page was written by Ivo  Timmermans  <>,  for
       the Debian GNU/Linux system (but may be used by others).

                               December 1st 2003            gnutls-srpcrypt(1)

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