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<title>GnuTLS 3.4.8: psktool Invocation</title>
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<a name="psktool-Invocation"></a>
<div class="header">
<p>
Previous: <a href="Authentication-using-PSK.html#Authentication-using-PSK" accesskey="p" rel="prev">Authentication using PSK</a>, Up: <a href="PSK-authentication.html#PSK-authentication" accesskey="u" rel="up">PSK authentication</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-psktool"></a>
<h4 class="subsubsection">4.3.2.2 Invoking psktool</h4>
<a name="index-psktool"></a>
<p>Program that generates random keys for use with TLS-PSK. The
keys are stored in hexadecimal format in a key file.
</p>
<p>This section was generated by <strong>AutoGen</strong>,
using the <code>agtexi-cmd</code> template and the option descriptions for the <code>psktool</code> program.
This software is released under the GNU General Public License, version 3 or later.
</p>
<a name="psktool-usage"></a><a name="psktool-help_002fusage-_0028_002d_002dhelp_0029"></a>
<h4 class="subsubheading">psktool help/usage (<samp>--help</samp>)</h4>
<a name="index-psktool-help"></a>
<p>This is the automatically generated usage text for psktool.
</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">psktool - GnuTLS PSK tool
Usage: psktool [ -<flag> [<val>] | --<name>[{=| }<val>] ]...
-d, --debug=num Enable debugging
- it must be in the range:
0 to 9999
-s, --keysize=num specify the key size in bytes
- it must be in the range:
0 to 512
-u, --username=str specify a username
-p, --passwd=str specify a password file
-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 generates random keys for use with TLS-PSK. The keys are
stored in hexadecimal format in a key file.
</pre></div>
<a name="psktool-debug"></a><a name="debug-option-_0028_002dd_0029-5"></a>
<h4 class="subsubheading">debug option (-d)</h4>
<p>This is the “enable debugging” option.
This option takes a number argument.
Specifies the debug level.
<a name="psktool-exit-status"></a></p><a name="psktool-exit-status-1"></a>
<h4 class="subsubheading">psktool 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="psktool-See-Also"></a><a name="psktool-See-Also-1"></a>
<h4 class="subsubheading">psktool See Also</h4>
<p>gnutls-cli-debug (1), gnutls-serv (1), srptool (1), certtool (1)
<a name="psktool-Examples"></a></p><a name="psktool-Examples-1"></a>
<h4 class="subsubheading">psktool Examples</h4>
<p>To add a user ’psk_identity’ in <samp>passwd.psk</samp> for use with GnuTLS run:
</p><div class="example">
<pre class="example">$ ./psktool -u psk_identity -p passwd.psk
Generating a random key for user 'psk_identity'
Key stored to passwd.psk
$ cat psks.txt
psk_identity:88f3824b3e5659f52d00e959bacab954b6540344
$
</pre></div>
<p>This command will create <samp>passwd.psk</samp> if it does not exist
and will add user ’psk_identity’ (you will also be prompted for a password).
</p>
<hr>
<div class="header">
<p>
Previous: <a href="Authentication-using-PSK.html#Authentication-using-PSK" accesskey="p" rel="prev">Authentication using PSK</a>, Up: <a href="PSK-authentication.html#PSK-authentication" accesskey="u" rel="up">PSK authentication</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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