openssl-gendsa.1ossl - Man Page

generate a DSA private key from a set of parameters


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


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



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. Otherwise they are ignored.


Print extra details about the operations being performed.

-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.


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
-propquery propq

See "Provider Options" in openssl(1), provider(7), and property(7).


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)


The -engine option was deprecated in OpenSSL 3.0.

Referenced By

openssl.1ossl(1), openssl-cmds.1ossl(1), openssl-dsa.1ossl(1), openssl-dsaparam.1ossl(1), openssl-genrsa.1ossl(1), openssl-pkcs8.1ossl(1), openssl-pkey.1ossl(1), openssl-pkeyparam.1ossl(1), openssl-req.1ossl(1), openssl-rsa.1ossl(1), openssl-x509.1ossl(1).

2023-08-22 3.1.1 OpenSSL