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127 .TH GENDSA 1 "2007-10-24" "0.9.8g" "OpenSSL"
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133 gendsa \- generate a DSA private key from a set of parameters
135 .IX Header "SYNOPSIS"
136 \&\fBopenssl\fR \fBgendsa\fR
137 [\fB\-out filename\fR]
141 [\fB\-rand file(s)\fR]
145 .IX Header "DESCRIPTION"
146 The \fBgendsa\fR command generates a \s-1DSA\s0 private key from a \s-1DSA\s0 parameter file
147 (which will be typically generated by the \fBopenssl dsaparam\fR command).
150 .IP "\fB\-des|\-des3|\-idea\fR" 4
151 .IX Item "-des|-des3|-idea"
152 These options encrypt the private key with the \s-1DES\s0, triple \s-1DES\s0, or the
153 \&\s-1IDEA\s0 ciphers respectively before outputting it. A pass phrase is prompted for.
154 If none of these options is specified no encryption is used.
155 .IP "\fB\-rand file(s)\fR" 4
156 .IX Item "-rand file(s)"
157 a file or files containing random data used to seed the random number
158 generator, or an \s-1EGD\s0 socket (see \fIRAND_egd\fR\|(3)).
159 Multiple files can be specified separated by a OS-dependent character.
160 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
162 .IP "\fB\-engine id\fR" 4
163 .IX Item "-engine id"
164 specifying an engine (by it's unique \fBid\fR string) will cause \fBreq\fR
165 to attempt to obtain a functional reference to the specified engine,
166 thus initialising it if needed. The engine will then be set as the default
167 for all available algorithms.
168 .IP "\fBparamfile\fR" 4
170 This option specifies the \s-1DSA\s0 parameter file to use. The parameters in this
171 file determine the size of the private key. \s-1DSA\s0 parameters can be generated
172 and examined using the \fBopenssl dsaparam\fR command.
175 \&\s-1DSA\s0 key generation is little more than random number generation so it is
176 much quicker that \s-1RSA\s0 key generation for example.
178 .IX Header "SEE ALSO"
179 \&\fIdsaparam\fR\|(1), \fIdsa\fR\|(1), \fIgenrsa\fR\|(1),