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<H1>PKEYPARAM</H1>
Section: OpenSSL (1SSL)<BR>Updated: 2021-03-22<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
openssl-pkeyparam, pkeyparam - public key algorithm parameter processing tool
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>openssl</B> <B>pkeyparam</B>
[<B>-help</B>]
[<B>-in filename</B>]
[<B>-out filename</B>]
[<B>-text</B>]
[<B>-noout</B>]
[<B>-engine id</B>]
[<B>-check</B>]
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
The <B>pkeyparam</B> command processes public key algorithm parameters.
They can be checked for correctness and their components printed out.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>
<DL COMPACT>
<DT id="1"><B>-help</B><DD>
Print out a usage message.
<DT id="2"><B>-in filename</B><DD>
This specifies the input filename to read parameters from or standard input if
this option is not specified.
<DT id="3"><B>-out filename</B><DD>
This specifies the output filename to write parameters to or standard output if
this option is not specified.
<DT id="4"><B>-text</B><DD>
Prints out the parameters in plain text in addition to the encoded version.
<DT id="5"><B>-noout</B><DD>
Do not output the encoded version of the parameters.
<DT id="6"><B>-engine id</B><DD>
Specifying an engine (by its unique <B>id</B> string) will cause <B>pkeyparam</B>
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
<DT id="7"><B>-check</B><DD>
This option checks the correctness of parameters.
</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>EXAMPLES</H2>
Print out text version of parameters:
<P>
<PRE>
openssl pkeyparam -in param.pem -text
</PRE>
<A NAME="lbAG">&nbsp;</A>
<H2>NOTES</H2>
There are no <B>-inform</B> or <B>-outform</B> options for this command because only
<FONT SIZE="-1">PEM</FONT> format is supported because the key type is determined by the <FONT SIZE="-1">PEM</FONT> headers.
<A NAME="lbAH">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?1+genpkey">genpkey</A></B>(1), <B><A HREF="/cgi-bin/man/man2html?1+rsa">rsa</A></B>(1), <B><A HREF="/cgi-bin/man/man2html?1+pkcs8">pkcs8</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?1+dsa">dsa</A></B>(1), <B><A HREF="/cgi-bin/man/man2html?1+genrsa">genrsa</A></B>(1), <B><A HREF="/cgi-bin/man/man2html?1+gendsa">gendsa</A></B>(1)
<A NAME="lbAI">&nbsp;</A>
<H2>COPYRIGHT</H2>
Copyright 2006-2019 The OpenSSL Project Authors. All Rights Reserved.
<P>
Licensed under the OpenSSL license (the ``License''). You may not use
this file except in compliance with the License. You can obtain a copy
in the file <FONT SIZE="-1">LICENSE</FONT> in the source distribution or at
&lt;<A HREF="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</A>&gt;.
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="8"><A HREF="#lbAB">NAME</A><DD>
<DT id="9"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="10"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="11"><A HREF="#lbAE">OPTIONS</A><DD>
<DT id="12"><A HREF="#lbAF">EXAMPLES</A><DD>
<DT id="13"><A HREF="#lbAG">NOTES</A><DD>
<DT id="14"><A HREF="#lbAH">SEE ALSO</A><DD>
<DT id="15"><A HREF="#lbAI">COPYRIGHT</A><DD>
</DL>
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