OPENSSL-GENDSA(1)

OPENSSL-GENDSA(1) | OpenSSL | OPENSSL-GENDSA(1)

# NAME

openssl-gendsa - generate a DSA private key from a set of parameters

# SYNOPSIS

openssl gendsa [-help] [-out filename] [-passout arg] [-aes128] [-aes192] [-aes256] [-aria128] [-aria192] [-aria256] [-camellia128] [-camellia192] [-camellia256] [-des] [-des3] [-idea] [-verbose] [-quiet] [-rand files] [-writerand file] [-engine id] [-provider name] [-provider-path path] [-provparam [name:]key=value] [-propquery propq] [paramfile]

# DESCRIPTION

This command generates a DSA private key from a DSA parameter file (which will be typically generated by the openssl-dsaparam(1) command).

# OPTIONS

-help
  Print out a usage message.
-out filename
  Output the key to the specified file. If this argument is not specified then standard output is used.
-passout arg
  The passphrase used for the output file. See openssl-passphrase-options(1).
-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea
  These options encrypt the private key with specified cipher before outputting it. A pass phrase is prompted for. If none of these options is specified no encryption is used.

  Note that all options must be given before the paramfile argument.

-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.
-rand files, -writerand file
  See "Random State Options" in openssl(1) for details.
-engine id
  See "Engine Options" in openssl(1). This option is deprecated.
paramfile
  The DSA parameter file to use. The parameters in this file determine the size of the private key. DSA parameters can be generated and examined using the openssl-dsaparam(1) command.
-provider name
-provider-path path
-provparam [name:]key=value
-propquery propq
  See "Provider Options" in openssl(1), provider(7), and property(7).

# NOTES

DSA key generation is little more than random number generation so it is much quicker that RSA key generation for example.

# SEE ALSO

openssl(1), openssl-genpkey(1), openssl-dsaparam(1), openssl-dsa(1), openssl-genrsa(1), openssl-rsa(1)

# HISTORY

The -engine option was deprecated 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>.

2025-07-18 | 3.5.1