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.IX Title &quot;PKEYPARAM 1&quot;
.TH PKEYPARAM 1 &quot;2023-09-11&quot; &quot;1.1.1w&quot; &quot;OpenSSL&quot;
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.SH &quot;NAME&quot;
openssl\-pkeyparam, pkeyparam \- public key algorithm parameter processing tool
.SH &quot;SYNOPSIS&quot;
.IX Header &quot;SYNOPSIS&quot;
\&amp;\fBopenssl\fR \fBpkeyparam\fR
[\fB\-help\fR]
[\fB\-in filename\fR]
[\fB\-out filename\fR]
[\fB\-text\fR]
[\fB\-noout\fR]
[\fB\-engine id\fR]
[\fB\-check\fR]
.SH &quot;DESCRIPTION&quot;
.IX Header &quot;DESCRIPTION&quot;
The \fBpkeyparam\fR command processes public key algorithm parameters.
They can be checked for correctness and their components printed out.
.SH &quot;OPTIONS&quot;
.IX Header &quot;OPTIONS&quot;
.IP &quot;\fB\-help\fR&quot; 4
.IX Item &quot;-help&quot;
Print out a usage message.
.IP &quot;\fB\-in filename\fR&quot; 4
.IX Item &quot;-in filename&quot;
This specifies the input filename to read parameters from or standard input if
this option is not specified.
.IP &quot;\fB\-out filename\fR&quot; 4
.IX Item &quot;-out filename&quot;
This specifies the output filename to write parameters to or standard output if
this option is not specified.
.IP &quot;\fB\-text\fR&quot; 4
.IX Item &quot;-text&quot;
Prints out the parameters in plain text in addition to the encoded version.
.IP &quot;\fB\-noout\fR&quot; 4
.IX Item &quot;-noout&quot;
Do not output the encoded version of the parameters.
.IP &quot;\fB\-engine id\fR&quot; 4
.IX Item &quot;-engine id&quot;
Specifying an engine (by its unique \fBid\fR string) will cause \fBpkeyparam\fR
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.
.IP &quot;\fB\-check\fR&quot; 4
.IX Item &quot;-check&quot;
This option checks the correctness of parameters.
.SH &quot;EXAMPLES&quot;
.IX Header &quot;EXAMPLES&quot;
Print out text version of parameters:
.PP
.Vb 1
\&amp; openssl pkeyparam \-in param.pem \-text
.Ve
.SH &quot;NOTES&quot;
.IX Header &quot;NOTES&quot;
There are no \fB\-inform\fR or \fB\-outform\fR options for this command because only
\&amp;\s-1PEM\s0 format is supported because the key type is determined by the \s-1PEM\s0 headers.
.SH &quot;SEE ALSO&quot;
.IX Header &quot;SEE ALSO&quot;
\&amp;\fBgenpkey\fR\|(1), \fBrsa\fR\|(1), \fBpkcs8\fR\|(1),
\&amp;\fBdsa\fR\|(1), \fBgenrsa\fR\|(1), \fBgendsa\fR\|(1)
.SH &quot;COPYRIGHT&quot;
.IX Header &quot;COPYRIGHT&quot;
Copyright 2006\-2019 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L&quot;License\*(R&quot;).  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
&lt;https://www.openssl.org/source/license.html&gt;.
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