| -help | Print out a usage message. |
| -informDER|PEM | The DSA parameters input format; unspecified by default. See openssl-format-options(1) for details. |
| -outformDER|PEM | Parameters are a sequence of ASN.1 INTEGERs: p, q, and g. This is compatible with RFC 2459 DSS-Parms structure. |
| -infilename | This specifies the input file 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. |
| -outfilename | This specifies the output file to write parameters to. Standard output is used if this option is not present. The output filename can be the same as the input filename, which leads to replacing the file contents. Note that file I/O is not atomic. The output file is truncated and then written. |
| -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. |
| -randfiles-writerandfile | See "Random State Options" in openssl(1) for details. |
| -engineid | See "Engine Options" in openssl(1). This option is deprecated. |
| 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. |
| -propquerypropq | See "Provider Options" in openssl(1), provider(7), and property(7). |
NAME
openssl-dsaparam - DSA parameter manipulation and generation
SYNOPSIS
openssl dsaparam [-help] [-informDER|PEM] [-outformDER|PEM] [-infilename] [-outfilename] [-noout] [-text] [-genkey] [-verbose] [-quiet] [-randfiles] [-writerandfile] [-engineid] [-providername] [-provider-pathpath] [-provparam[name:]key=value] [-propquerypropq] [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.
- -informDER|PEM
The DSA parameters input format; unspecified by default. See openssl-format-options(1) for details.
- -outformDER|PEM
Parameters are a sequence of ASN.1 INTEGERs: p, q, and g. This is compatible with RFC 2459 DSS-Parms structure.
- -infilename
This specifies the input file 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.
- -outfilename
This specifies the output file to write parameters to. Standard output is used if this option is not present. The output filename can be the same as the input filename, which leads to replacing the file contents. Note that file I/O is not atomic. The output file is truncated and then written.
- -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.
- -randfiles, -writerandfile
See "Random State Options" in openssl(1) for details.
- -engineid
See "Engine Options" in openssl(1). This option is deprecated.
- 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.
- -providername
- -provider-pathpath
- -provparam[name:]key=value
- -propquerypropq
See "Provider Options" in openssl(1), provider(7), and property(7).
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>.