NAME
openssl-dsaparam - DSA parameter manipulation and generation
SYNOPSIS
openssl dsaparam [-help] [-inform DER|PEM] [-outform DER|PEM] [-in filename] [-out filename] [-noout] [-text] [-genkey] [-verbose] [-quiet] {- $OpenSSL::safe::opt_r_synopsis -} {- $OpenSSL::safe::opt_engine_synopsis -}{- $OpenSSL::safe::opt_provider_synopsis -} [numbits] [numqbits]
DESCRIPTION
This command is used to manipulate or generate DSA parameter files.
DSA parameter generation can be a slow process and as a result the same set of DSA parameters is often used to generate several distinct keys.
OPTIONS
- -help
-
Print out a usage message.
- -inform DER|PEM
-
The DSA parameters input format; unspecified by default. See openssl-format-options(1) for details.
- -outform DER|PEM
-
The DSA parameters output format; the default is PEM. See openssl-format-options(1) for details.
Parameters are a sequence of ASN.1 INTEGERs: p, q, and g. This is compatible with RFC 2459 DSS-Parms structure.
- -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.
- -noout
-
This option inhibits the output of the encoded version of the parameters.
- -text
-
This option prints out the DSA parameters in human readable form.
- -genkey
-
This option will generate a DSA either using the specified or generated parameters.
- -verbose
-
Print extra details about the operations being performed.
- -quiet
-
Print fewer details about the operations being performed, which may be handy during batch scripts and pipelines.
{- $OpenSSL::safe::opt_r_item -}
{- $OpenSSL::safe::opt_engine_item -}
- numbits
-
This optional argument specifies that a parameter set should be generated of size numbits. If this argument is included then the input file (if any) is ignored.
- numqbits
-
This optional argument specifies that a parameter set should be generated with a subprime parameter q of size numqbits. It must be the last argument. If this argument is included then the input file (if any) is ignored.
{- $OpenSSL::safe::opt_provider_item -}
SEE ALSO
openssl(1), openssl-pkeyparam(1), openssl-gendsa(1), openssl-dsa(1), openssl-genrsa(1), openssl-rsa(1)
HISTORY
The -engine option was deprecated in OpenSSL 3.0.
The -C option was removed in OpenSSL 3.0.
COPYRIGHT
Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (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 https://www.openssl.org/source/license.html.
POD ERRORS
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