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.\" ========================================================================
.\"
.IX Title "GENDSA 1"
.TH GENDSA 1 "2019-12-20" "1.0.2u" "OpenSSL"
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.nh
.SH "NAME"
openssl\-gendsa,
gendsa \- generate a DSA private key from a set of parameters
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl\fR \fBgendsa\fR
[\fB\-out filename\fR]
[\fB\-aes128\fR]
[\fB\-aes192\fR]
[\fB\-aes256\fR]
[\fB\-camellia128\fR]
[\fB\-camellia192\fR]
[\fB\-camellia256\fR]
[\fB\-des\fR]
[\fB\-des3\fR]
[\fB\-idea\fR]
[\fB\-rand file(s)\fR]
[\fB\-engine id\fR]
[\fBparamfile\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBgendsa\fR command generates a \s-1DSA\s0 private key from a \s-1DSA\s0 parameter file
(which will be typically generated by the \fBopenssl dsaparam\fR command).
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-aes128|\-aes192|\-aes256|\-camellia128|\-camellia192|\-camellia256|\-des|\-des3|\-idea\fR" 4
.IX Item "-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.
.IP "\fB\-rand file(s)\fR" 4
.IX Item "-rand file(s)"
a file or files containing random data used to seed the random number
generator, or an \s-1EGD\s0 socket (see \fIRAND_egd\fR\|(3)).
Multiple files can be specified separated by a OS-dependent character.
The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
all others.
.IP "\fB\-engine id\fR" 4
.IX Item "-engine id"
specifying an engine (by its unique \fBid\fR string) will cause \fBgendsa\fR
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.
.IP "\fBparamfile\fR" 4
.IX Item "paramfile"
This option specifies the \s-1DSA\s0 parameter file to use. The parameters in this
file determine the size of the private key. \s-1DSA\s0 parameters can be generated
and examined using the \fBopenssl dsaparam\fR command.
.SH "NOTES"
.IX Header "NOTES"
\&\s-1DSA\s0 key generation is little more than random number generation so it is
much quicker that \s-1RSA\s0 key generation for example.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIdsaparam\fR\|(1), \fIdsa\fR\|(1), \fIgenrsa\fR\|(1),
\&\fIrsa\fR\|(1)
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