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132 .TH GENDSA 1 "2018-11-20" "1.1.1a" "OpenSSL"
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138 openssl\-gendsa, gendsa \- generate a DSA private key from a set of parameters
140 .IX Header "SYNOPSIS"
141 \&\fBopenssl\fR \fBgendsa\fR
143 [\fB\-out filename\fR]
150 [\fB\-camellia128\fR]
151 [\fB\-camellia192\fR]
152 [\fB\-camellia256\fR]
156 [\fB\-rand file...\fR]
157 [\fB\-writerand file\fR]
161 .IX Header "DESCRIPTION"
162 The \fBgendsa\fR command generates a \s-1DSA\s0 private key from a \s-1DSA\s0 parameter file
163 (which will be typically generated by the \fBopenssl dsaparam\fR command).
168 Print out a usage message.
169 .IP "\fB\-out filename\fR" 4
170 .IX Item "-out filename"
171 Output the key to the specified file. If this argument is not specified then
172 standard output is used.
173 .IP "\fB\-aes128\fR, \fB\-aes192\fR, \fB\-aes256\fR, \fB\-aria128\fR, \fB\-aria192\fR, \fB\-aria256\fR, \fB\-camellia128\fR, \fB\-camellia192\fR, \fB\-camellia256\fR, \fB\-des\fR, \fB\-des3\fR, \fB\-idea\fR" 4
174 .IX Item "-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea"
175 These options encrypt the private key with specified
176 cipher before outputting it. A pass phrase is prompted for.
177 If none of these options is specified no encryption is used.
178 .IP "\fB\-rand file...\fR" 4
179 .IX Item "-rand file..."
180 A file or files containing random data used to seed the random number
182 Multiple files can be specified separated by an OS-dependent character.
183 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
185 .IP "[\fB\-writerand file\fR]" 4
186 .IX Item "[-writerand file]"
187 Writes random data to the specified \fIfile\fR upon exit.
188 This can be used with a subsequent \fB\-rand\fR flag.
189 .IP "\fB\-engine id\fR" 4
190 .IX Item "-engine id"
191 Specifying an engine (by its unique \fBid\fR string) will cause \fBgendsa\fR
192 to attempt to obtain a functional reference to the specified engine,
193 thus initialising it if needed. The engine will then be set as the default
194 for all available algorithms.
195 .IP "\fBparamfile\fR" 4
197 This option specifies the \s-1DSA\s0 parameter file to use. The parameters in this
198 file determine the size of the private key. \s-1DSA\s0 parameters can be generated
199 and examined using the \fBopenssl dsaparam\fR command.
202 \&\s-1DSA\s0 key generation is little more than random number generation so it is
203 much quicker that \s-1RSA\s0 key generation for example.
205 .IX Header "SEE ALSO"
206 \&\fIdsaparam\fR\|(1), \fIdsa\fR\|(1), \fIgenrsa\fR\|(1),
209 .IX Header "COPYRIGHT"
210 Copyright 2000\-2018 The OpenSSL Project Authors. All Rights Reserved.
212 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
213 this file except in compliance with the License. You can obtain a copy
214 in the file \s-1LICENSE\s0 in the source distribution or at
215 <https://www.openssl.org/source/license.html>.