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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | EXIT STATUS | SEE ALSO | AUTHORS | COPYRIGHT | BUGS | COLOPHON |
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tpmtool(1) User Commands tpmtool(1)
tpmtool - GnuTLS TPM tool
tpmtool [-flags] [-flag [value]] [--option-name[[=| ]value]]
All arguments must be options.
Program that allows handling cryptographic data from the TPM
chip.
-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.
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
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.
p11tool(1), certtool(1)
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
Please send bug reports to: bugs@gnutls.org
This page is part of the GnuTLS (GnuTLS Transport Layer Security
Library) project. Information about the project can be found at
⟨http://www.gnutls.org/⟩. If you have a bug report for this
manual page, send it to bugs@gnutls.org. This page was obtained
from the tarball gnutls-3.7.8.tar.xz fetched from
⟨http://www.gnutls.org/download.html⟩ on 2022-12-17. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
3.7.8 27 Sep 2022 tpmtool(1)
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