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DSAPARAM(1)			    OpenSSL			   DSAPARAM(1)

       openssl-dsaparam, dsaparam - DSA	parameter manipulation and generation

       openssl dsaparam	[-help]	[-inform DER|PEM] [-outform DER|PEM] [-in
       filename] [-out filename] [-noout] [-text] [-C] [-rand file...]
       [-writerand file] [-genkey] [-engine id]	[numbits]

       This command is used to manipulate or generate DSA parameter files.

	   Print out a usage message.

       -inform DER|PEM
	   This	specifies the input format. The	DER option uses	an ASN1	DER
	   encoded form	compatible with	RFC2459	(PKIX) DSS-Parms that is a
	   SEQUENCE consisting of p, q and g respectively. The PEM form	is the
	   default format: it consists of the DER format base64	encoded	with
	   additional header and footer	lines.

       -outform	DER|PEM
	   This	specifies the output format, the options have the same meaning
	   and default as the -inform option.

       -in filename
	   This	specifies the input filename to	read parameters	from or
	   standard input if this option is not	specified. If the numbits
	   parameter is	included then this option will be ignored.

       -out filename
	   This	specifies the output filename parameters to. Standard output
	   is used if this option is not present. The output filename should
	   not be the same as the input	filename.

	   This	option inhibits	the output of the encoded version of the

	   This	option prints out the DSA parameters in	human readable form.

       -C  This	option converts	the parameters into C code. The	parameters can
	   then	be loaded by calling the get_dsaXXX() function.

	   This	option will generate a DSA either using	the specified or
	   generated parameters.

       -rand file...
	   A file or files containing random data used to seed the random
	   number generator.  Multiple files can be specified separated	by an
	   OS-dependent	character.  The	separator is ; for MS-Windows, , for
	   OpenVMS, and	: for all others.

       [-writerand file]
	   Writes random data to the specified file upon exit.	This can be
	   used	with a subsequent -rand	flag.

	   This	option specifies that a	parameter set should be	generated of
	   size	numbits. It must be the	last option. If	this option is
	   included then the input file	(if any) is ignored.

       -engine id
	   Specifying an engine	(by its	unique id string) will cause dsaparam
	   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.

       PEM format DSA parameters use the header	and footer lines:


       DSA parameter generation	is a slow process and as a result the same set
       of DSA parameters is often used to generate several distinct keys.

       gendsa(1), dsa(1), genrsa(1), rsa(1)

       Copyright 2000-2017 The OpenSSL Project Authors.	All Rights Reserved.

       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 LICENSE in the source distribution or at

1.1.1k				  2021-03-25			   DSAPARAM(1)


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