tss2_getrandom(1) - # SYNOPSIS

       Github Issues (https://github.com/tpm2-software/tpm2-tools/issues)

       This collection of options are common to all tss2 programs and provide information that  many  users  may
       expect.

       • -h, --help[man|no-man]: Display the tools manpage.  By default, it attempts to invoke the manpager for
         the tool, however, on failure will output a short tool summary.  This is the same behavior if the “man”
         option argument is specified, however if explicit “man” is requested, the tool will provide errors from
         man  on  stderr.  If the “no-man” option if specified, or the manpager fails, the short options will be
         output to stdout.

         To successfully use the manpages feature requires the manpages to  be  installed  or  on  MANPATH,  See
         man(1) for more details.

       • -v, --version: Display version information for this tool, supported tctis and exit.

tss2_getrandom(1) - This command uses the TPM to create an array of random bytes.

                  tss2_getrandom --numBytes=20 --data=- | hexdump -C

       See the Mailing List (https://lists.linuxfoundation.org/mailman/listinfo/tpm2)

tpm2-tools                                         APRIL 2019                                  tss2_getrandom(1)

tss2_getrandom(1) - # SYNOPSIS

       tss2_getrandom [OPTIONS]

       These are the available options:

       • -n, --numBytes=INTEGER:

         The number of bytes requested by the caller.

       • -f, --force:

         Force overwriting the output file.

       • -o, --data=FILENAME or - (for stdout):

         The returned random bytes.

       • --hex

         Convert the output data to hex format without a leading “0x”.

       0 on success or 1 on failure.

fapi-config(5)  to adjust Fapi parameters like the used cryptographic profile and TCTI or directories for
       the Fapi metadata storages.

       fapi-profile(5) to determine the cryptographic algorithms and parameters for all keys and operations of a
       specific TPM interaction like the name hash algorithm, the asymmetric signature algorithm, scheme and pa‐
       rameters and PCR bank selection.