NAME
openssl-dsaparam - DSA parameter manipulation and generation
SYNOPSIS
openssl dsaparam [-help] [-inform DER|PEM] [-outform DER|PEM] [-in filename] [-out filename] [-noout] [-text] [-C] [-genkey] [-verbose] [-rand files] [-writerand file] [-engine id] [-provider name] [-provider_path path] [numbits]
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, -outform DER|PEM
-
The input and formats; the default is PEM. See -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.
- -C
This option converts the parameters into C code. The parameters can then be loaded by calling the get_dsaXXX() function.
- -genkey
This option will generate a DSA either using the specified or generated parameters.
- -verbose
Print extra details about the operations being performed.
- -rand files, -writerand file
See -engine id
See numbits
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.
- -provider name
- -provider_path path
See SEE ALSO
openssl-pkeyparam(1), openssl-dsa(1), openssl-rsa(1)
COPYRIGHT
Copyright 2000-2020 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.