NAME
gendsa - generate a DSA private key from a set of parameters
LIBRARY
libcrypto, -lcrypto
SYNOPSIS
openssl gendsa [
-out filename] [
-aes128] [
-aes192] [
-aes256] [
-camellia128] [
-camellia192] [
-camellia256] [
-des] [
-des3] [
-idea] [
-rand file(s)] [
-engine id] [
paramfile]
DESCRIPTION
The
gendsa command generates a DSA private key from a DSA parameter file
(which will be typically generated by the
openssl dsaparam command).
OPTIONS
- -aes128|-aes192|-aes256|-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.
- -rand file(s)
- a file or files containing random data used to seed the
random number generator, or an EGD socket (see RAND_egd(3)).
Multiple files can be specified separated by a OS-dependent character. The
separator is ; for MS-Windows, , for OpenVMS, and :
for all others.
- -engine id
- specifying an engine (by its unique id string) will
cause gendsa to attempt to obtain a functional reference to the
specified engine, thus initialising it if needed. The engine will then be
set as the default for all available algorithms.
- paramfile
- This option specifies 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
command.
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_dsaparam(1),
openssl_dsa(1),
openssl_genrsa(1),
openssl_rsa(1)