DragonFly On-Line Manual Pages

tpmtool(1)                       User Commands                      tpmtool(1)

NAME
       tpmtool - GnuTLS TPM tool

SYNOPSIS
       tpmtool [-flags] [-flag [value]] [--option-name[[=| ]value]]

       All arguments must be options.

DESCRIPTION
       Program that allows handling cryptographic data from the TPM chip.

OPTIONS
       -d num, --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.

       --infile=file
              Input file.

       --outfile=str
              Output file.

       --generate-rsa
              Generate an RSA private-public key pair.

              Generates an RSA private-public key pair in the TPM chip.  The
              key may be stored in file system and protected by a PIN, or
              stored (registered) in the TPM chip flash.

       --register
              Any generated key will be registered in the TPM.  This option
              must appear in combination with the following options: generate-
              rsa.

       --signing
              Any generated key will be a signing key.  This option must not
              appear in combination with any of the following options: legacy.
              This option must appear in combination with the following
              options: generate-rsa.

       --legacy
              Any generated key will be a legacy key.  This option must not
              appear in combination with any of the following options:
              signing.  This option must appear in combination with the
              following options: generate-rsa.

       --user
              Any registered key will be a user key.  This option must not
              appear in combination with any of the following options: system.
              This option must appear in combination with the following
              options: register.

              The generated key will be stored in a user specific persistent
              storage.

       --system
              Any registered key will be a system key.  This option must not
              appear in combination with any of the following options: user.
              This option must appear in combination with the following
              options: register.

              The generated key will be stored in system persistent storage.

       --pubkey=url
              Prints the public key of the provided key.

       --list
              Lists all stored keys in the TPM.

       --delete=url
              Delete the key identified by the given URL (UUID).

       --test-sign=url
              Tests the signature operation of the provided object.

              It can be used to test the correct operation of the signature
              operation.  This operation will sign and verify the signed data.

       --sec-param=security parameter
              Specify the security level [low, legacy, medium, high, ultra].

              This is alternative to the bits option. Note however that the
              values allowed by the TPM chip are quantized and given values
              may be rounded up.

       --bits=num
              Specify the number of bits for key generate.  This option takes
              an integer number as its argument.

       --inder, --no-inder
              Use the DER format for keys.  The no-inder form will disable the
              option.

              The input files will be assumed to be in the portable DER format
              of TPM. The default format is a custom format used by various
              TPM tools

       --outder, --no-outder
              Use DER format for output keys.  The no-outder form will disable
              the option.

              The output will be in the TPM portable DER format.

       --srk-well-known
              SRK has well known password (20 bytes of zeros).

       -v arg, --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 generate a key that is to be stored in file system use:
           $ tpmtool --generate-rsa --bits 2048 --outfile tpmkey.pem

       To generate a key that is to be stored in TPM's flash use:
           $ tpmtool --generate-rsa --bits 2048 --register --user

       To get the public key of a TPM key use:
           $ tpmtool --pubkey tpmkey:uuid=58ad734b-bde6-45c7-89d8-756a55ad1891;storage=user           --outfile pubkey.pem

       or if the key is stored in the file system:
           $ tpmtool --pubkey tpmkey:file=tmpkey.pem --outfile pubkey.pem

       To list all keys stored in TPM use:
           $ tpmtool --list

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
       p11tool (1), certtool (1)

AUTHORS
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

3.7.9                             09 Feb 2023                       tpmtool(1)