openssl-prebuild/linux_amd64/ssl/share/man/man1/openssl-dsaparam.1

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.\" ========================================================================
.\"
.IX Title "OPENSSL-DSAPARAM 1"
.TH OPENSSL-DSAPARAM 1 "2020-03-02" "3.0.0-dev" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
openssl\-dsaparam \- DSA parameter manipulation and generation
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl dsaparam\fR
[\fB\-help\fR]
[\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR]
[\fB\-outform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR]
[\fB\-in\fR \fIfilename\fR]
[\fB\-out\fR \fIfilename\fR]
[\fB\-noout\fR]
[\fB\-text\fR]
[\fB\-C\fR]
[\fB\-genkey\fR]
[\fB\-verbose\fR]
[\fB\-rand\fR \fIfiles\fR]
[\fB\-writerand\fR \fIfile\fR]
[\fB\-engine\fR \fIid\fR]
[\fInumbits\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This command has been deprecated.
The \fIopenssl\-pkeyparam\fR\|(1) command should be used instead.
.PP
This command is used to manipulate or generate \s-1DSA\s0 parameter files.
.PP
\&\s-1DSA\s0 parameter generation can be a slow process and as a result the same set of
\&\s-1DSA\s0 parameters is often used to generate several distinct keys.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR, \fB\-outform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR" 4
.IX Item "-inform DER|PEM, -outform DER|PEM"
The input and formats; the default is \fB\s-1PEM\s0\fR.
See \*(L"Format Options\*(R" in \fIopenssl\fR\|(1) for details.
.Sp
Parameters are a sequence of \fB\s-1ASN\s0.1 \s-1INTEGER\s0\fRs: \fBp\fR, \fBq\fR, and \fBg\fR.
This is compatible with \s-1RFC\s0 2459 \fBDSS-Parms\fR structure.
.IP "\fB\-in\fR \fIfilename\fR" 4
.IX Item "-in filename"
This specifies the input filename to read parameters from or standard input if
this option is not specified. If the \fInumbits\fR parameter is included then
this option will be ignored.
.IP "\fB\-out\fR \fIfilename\fR" 4
.IX Item "-out filename"
This specifies the output filename parameters to. Standard output is used
if this option is not present. The output filename should \fBnot\fR be the same
as the input filename.
.IP "\fB\-noout\fR" 4
.IX Item "-noout"
This option inhibits the output of the encoded version of the parameters.
.IP "\fB\-text\fR" 4
.IX Item "-text"
This option prints out the \s-1DSA\s0 parameters in human readable form.
.IP "\fB\-C\fR" 4
.IX Item "-C"
This option converts the parameters into C code. The parameters can then
be loaded by calling the \fIget_dsaXXX()\fR function.
.IP "\fB\-genkey\fR" 4
.IX Item "-genkey"
This option will generate a \s-1DSA\s0 either using the specified or generated
parameters.
.IP "\fB\-verbose\fR" 4
.IX Item "-verbose"
Print extra details about the operations being performed.
.IP "\fB\-rand\fR \fIfiles\fR, \fB\-writerand\fR \fIfile\fR" 4
.IX Item "-rand files, -writerand file"
See \*(L"Random State Options\*(R" in \fIopenssl\fR\|(1) for details.
.IP "\fB\-engine\fR \fIid\fR" 4
.IX Item "-engine id"
See \*(L"Engine Options\*(R" in \fIopenssl\fR\|(1).
.IP "\fInumbits\fR" 4
.IX Item "numbits"
This option specifies that a parameter set should be generated of size
\&\fInumbits\fR. It must be the last option. If this option is included then
the input file (if any) is ignored.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIopenssl\fR\|(1),
\&\fIopenssl\-pkeyparam\fR\|(1),
\&\fIopenssl\-gendsa\fR\|(1),
\&\fIopenssl\-dsa\fR\|(1),
\&\fIopenssl\-genrsa\fR\|(1),
\&\fIopenssl\-rsa\fR\|(1)
.SH "HISTORY"
.IX Header "HISTORY"
This command was deprecated in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2019 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (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>.