NAME

       psktool - GnuTLS PSK tool

SYNOPSIS

       psktool [-flags] [-flag [value]] [--option-name[[=| ]value]]

       All arguments must be options.

DESCRIPTION

       Program   that generates random keys for use with TLS-PSK. The keys are stored in hexadecimal format in a
       key file.

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.

       -s number, --keysize=number Specify the key size in bytes (default is 32-bytes or 256-bits).  This option
       takes an integer number as its argument.  The value of number is constrained to being:
           in the range 0  through  512

       -u string, --username=string Specify the username to use.

       -p string, --pskfile=string Specify a pre-shared key file.

       This option will specify the pre-shared key file to store the generated keys.

       --passwd This is an alias for the --pskfile option.

       NOTE: THIS OPTION IS DEPRECATED

       -v keyword, --version=keyword 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.

       -h, --help Display usage information and exit.

       -!, --more-help Pass the extended usage information through a pager.

       EXAMPLES
              To add a user 'psk_identity' in keys.psk for use with GnuTLS run:
                  $ ./psktool -u psk_identity -p keys.psk
                  Generating a random key for user 'psk_identity'
                  Key stored to keys.psk
                  $ cat keys.psk
                  psk_identity:88f3824b3e5659f52d00e959bacab954b6540344
                  $

              This command will create keys.psk if it does not exist and will add user 'psk_identity'.

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.

       SEE ALSO
              gnutls-cli-debug (1), gnutls-serv (1), srptool (1), certtool (1)

AUTHORS

       Nikos Mavrogiannopoulos, Simon Josefsson and others; see  /usr/share/doc/gnutls/AUTHORS  for  a  complete
       list.

COPYRIGHT

       Copyright  (C)  2020-2021  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

3.7.3                                              18 Jan 2022                                        psktool(1)