psktool - GnuTLS PSK tool

       Please send bug reports to: bugs@gnutls.org

3.8.9                                              08 Feb 2025                                        psktool(1)

       Copyright (C) 2020-2023 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

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

       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.

       SEEALSO
              gnutls-cli-debug (1), gnutls-serv (1), srptool (1), certtool (1)

psktool - GnuTLS PSK tool

-dnum, --debug=num Enable debugging.  This option takes an integer number as its argument.  The value of
       num is constrained to being:
           in the range 0 through 9999

       Specifies the debug level.

       -snum, --keysize=num 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 num is constrained to being:
           in the range 0 through 512

       -ustr, --username=str Specify the username to use.

       -pstr, --pskfile=str 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:THISOPTIONISDEPRECATED-varg, --version=arg 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'.

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

       All arguments must be options.