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.\" ========================================================================
.\"
.IX Title "PKEYPARAM 1"
.TH PKEYPARAM 1 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
openssl\-pkeyparam, pkeyparam \- public key algorithm parameter processing tool
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\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 "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBpkeyparam\fR command processes public key algorithm parameters.
They can be checked for correctness and their components printed out.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-in filename\fR" 4
.IX Item "-in filename"
This specifies the input filename to read parameters from or standard input if
this option is not specified.
.IP "\fB\-out filename\fR" 4
.IX Item "-out filename"
This specifies the output filename to write parameters to or standard output if
this option is not specified.
.IP "\fB\-text\fR" 4
.IX Item "-text"
Prints out the parameters in plain text in addition to the encoded version.
.IP "\fB\-noout\fR" 4
.IX Item "-noout"
Do not output the encoded version of the parameters.
.IP "\fB\-engine id\fR" 4
.IX Item "-engine id"
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 "\fB\-check\fR" 4
.IX Item "-check"
This option checks the correctness of parameters.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
Print out text version of parameters:
.PP
.Vb 1
\& openssl pkeyparam \-in param.pem \-text
.Ve
.SH "NOTES"
.IX Header "NOTES"
There are no \fB\-inform\fR or \fB\-outform\fR options for this command because only
\&\s-1PEM\s0 format is supported because the key type is determined by the \s-1PEM\s0 headers.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBgenpkey\fR\|(1), \fBrsa\fR\|(1), \fBpkcs8\fR\|(1),
\&\fBdsa\fR\|(1), \fBgenrsa\fR\|(1), \fBgendsa\fR\|(1)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2006\-2019 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  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
<https://www.openssl.org/source/license.html>.