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<a name="tpmtool-Invocation"></a>
<div class="header">
<p>
Previous: <a href="Using-keys.html#Using-keys" accesskey="p" rel="previous">Using keys</a>, Up: <a href="Trusted-Platform-Module.html#Trusted-Platform-Module" accesskey="u" rel="up">Trusted Platform Module</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Data-Index.html#Function-and-Data-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Invoking-tpmtool"></a>
<h4 class="subsection">5.3.4 Invoking tpmtool</h4>
<a name="index-tpmtool"></a>
<p>Program that allows handling cryptographic data from the TPM chip.
</p>
<p>This section was generated by <strong>AutoGen</strong>,
using the <code>agtexi-cmd</code> template and the option descriptions for the <code>tpmtool</code> program.
This software is released under the GNU General Public License, version 3 or later.
</p>
<a name="tpmtool-usage"></a><a name="tpmtool-help_002fusage-_0028_002d_002dhelp_0029"></a>
<h4 class="subsubheading">tpmtool help/usage (<samp>--help</samp>)</h4>
<a name="index-tpmtool-help"></a>
<p>This is the automatically generated usage text for tpmtool.
</p>
<p>The text printed is the same whether selected with the <code>help</code> option
(<samp>--help</samp>) or the <code>more-help</code> option (<samp>--more-help</samp>). <code>more-help</code> will print
the usage text by passing it through a pager program.
<code>more-help</code> is disabled on platforms without a working
<code>fork(2)</code> function. The <code>PAGER</code> environment variable is
used to select the program, defaulting to <samp>more</samp>. Both will exit
with a status code of 0.
</p>
<div class="example">
<pre class="example">tpmtool - GnuTLS TPM tool
Usage: tpmtool [ -<flag> [<val>] | --<name>[{=| }<val>] ]...
-d, --debug=num Enable debugging.
- it must be in the range:
0 to 9999
--infile=file Input file
- file must pre-exist
--outfile=str Output file
--generate-rsa Generate an RSA private-public key pair
--register Any generated key will be registered in the TPM
- requires the option 'generate-rsa'
--signing Any generated key will be a signing key
- requires the option 'generate-rsa'
-- and prohibits the option 'legacy'
--legacy Any generated key will be a legacy key
- requires the option 'generate-rsa'
-- and prohibits the option 'signing'
--user Any registered key will be a user key
- requires the option 'register'
-- and prohibits the option 'system'
--system Any registred key will be a system key
- requires the option 'register'
-- and prohibits the option 'user'
--pubkey=str Prints the public key of the provided key
--list Lists all stored keys in the TPM
--delete=str Delete the key identified by the given URL (UUID).
--sec-param=str Specify the security level [low, legacy, normal, high, ultra].
--bits=num Specify the number of bits for key generate
--inder Use the DER format for keys.
- disabled as '--no-inder'
--outder Use DER format for output keys
- disabled as '--no-outder'
-v, --version[=arg] output version information and exit
-h, --help display extended usage information and exit
-!, --more-help extended usage information passed thru pager
Options are specified by doubled hyphens and their name or by a single
hyphen and the flag character.
Program that allows handling cryptographic data from the TPM chip.
Please send bug reports to: <bug-gnutls@gnu.org>
</pre></div>
<a name="tpmtool-debug"></a><a name="debug-option-_0028_002dd_0029-6"></a>
<h4 class="subsubheading">debug option (-d)</h4>
<p>This is the “enable debugging.” option.
This option takes an argument number.
Specifies the debug level.
<a name="tpmtool-generate_002drsa"></a></p><a name="generate_002drsa-option-1"></a>
<h4 class="subsubheading">generate-rsa option</h4>
<p>This is the “generate an rsa private-public key pair” option.
Generates an RSA private-public key pair in the TPM chip.
The key may be stored in filesystem and protected by a PIN, or stored (registered)
in the TPM chip flash.
<a name="tpmtool-user"></a></p><a name="user-option"></a>
<h4 class="subsubheading">user option</h4>
<p>This is the “any registered key will be a user key” option.
</p>
<p>This option has some usage constraints. It:
</p><ul>
<li> must appear in combination with the following options:
register.
</li><li> must not appear in combination with any of the following options:
system.
</li></ul>
<p>The generated key will be stored in a user specific persistent storage.
<a name="tpmtool-system"></a></p><a name="system-option"></a>
<h4 class="subsubheading">system option</h4>
<p>This is the “any registred key will be a system key” option.
</p>
<p>This option has some usage constraints. It:
</p><ul>
<li> must appear in combination with the following options:
register.
</li><li> must not appear in combination with any of the following options:
user.
</li></ul>
<p>The generated key will be stored in system persistent storage.
<a name="tpmtool-sec_002dparam"></a></p><a name="sec_002dparam-option-2"></a>
<h4 class="subsubheading">sec-param option</h4>
<p>This is the “specify the security level [low, legacy, normal, high, ultra].” option.
This option takes an argument string <samp>Security parameter</samp>.
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.
<a name="tpmtool-inder"></a></p><a name="inder-option-3"></a>
<h4 class="subsubheading">inder option</h4>
<p>This is the “use the der format for keys.” 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
<a name="tpmtool-outder"></a></p><a name="outder-option-1"></a>
<h4 class="subsubheading">outder option</h4>
<p>This is the “use der format for output keys” option.
The output will be in the TPM portable DER format.
<a name="tpmtool-exit-status"></a></p><a name="tpmtool-exit-status-1"></a>
<h4 class="subsubheading">tpmtool exit status</h4>
<p>One of the following exit values will be returned:
</p><dl compact="compact">
<dt>‘<samp>0 (EXIT_SUCCESS)</samp>’</dt>
<dd><p>Successful program execution.
</p></dd>
<dt>‘<samp>1 (EXIT_FAILURE)</samp>’</dt>
<dd><p>The operation failed or the command syntax was not valid.
</p></dd>
</dl>
<a name="tpmtool-See-Also"></a><a name="tpmtool-See-Also-1"></a>
<h4 class="subsubheading">tpmtool See Also</h4>
<p>p11tool (1), certtool (1)
<a name="tpmtool-Examples"></a></p><a name="tpmtool-Examples-1"></a>
<h4 class="subsubheading">tpmtool Examples</h4>
<p>To generate a key that is to be stored in filesystem use:
</p><div class="example">
<pre class="example">$ tpmtool --generate-rsa --bits 2048 --outfile tpmkey.pem
</pre></div>
<p>To generate a key that is to be stored in TPM’s flash use:
</p><div class="example">
<pre class="example">$ tpmtool --generate-rsa --bits 2048 --register --user
</pre></div>
<p>To get the public key of a TPM key use:
</p><div class="example">
<pre class="example">$ tpmtool --pubkey tpmkey:uuid=58ad734b-bde6-45c7-89d8-756a55ad1891;storage=user \
--outfile pubkey.pem
</pre></div>
<p>or if the key is stored in the filesystem:
</p><div class="example">
<pre class="example">$ tpmtool --pubkey tpmkey:file=tmpkey.pem --outfile pubkey.pem
</pre></div>
<p>To list all keys stored in TPM use:
</p><div class="example">
<pre class="example">$ tpmtool --list
</pre></div>
<hr>
<div class="header">
<p>
Previous: <a href="Using-keys.html#Using-keys" accesskey="p" rel="previous">Using keys</a>, Up: <a href="Trusted-Platform-Module.html#Trusted-Platform-Module" accesskey="u" rel="up">Trusted Platform Module</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Data-Index.html#Function-and-Data-Index" title="Index" rel="index">Index</a>]</p>
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