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141 .TH GENDSA 1 "0.9.7a" "2003-02-19" "OpenSSL"
144 gendsa \- generate a \s-1DSA\s0 private key from a set of parameters
146 .IX Header "SYNOPSIS"
147 \&\fBopenssl\fR \fBgendsa\fR
148 [\fB\-out filename\fR]
152 [\fB\-rand \f(BIfile\fB\|(s)\fR]
156 .IX Header "DESCRIPTION"
157 The \fBgendsa\fR command generates a \s-1DSA\s0 private key from a \s-1DSA\s0 parameter file
158 (which will be typically generated by the \fBopenssl dsaparam\fR command).
161 .Ip "\fB\-des|\-des3|\-idea\fR" 4
162 .IX Item "-des|-des3|-idea"
163 These options encrypt the private key with the \s-1DES\s0, triple \s-1DES\s0, or the
164 \&\s-1IDEA\s0 ciphers respectively before outputting it. A pass phrase is prompted for.
165 If none of these options is specified no encryption is used.
166 .Ip "\fB\-rand \f(BIfile\fB\|(s)\fR" 4
167 .IX Item "-rand file"
168 a file or files containing random data used to seed the random number
169 generator, or an \s-1EGD\s0 socket (see RAND_egd(3)).
170 Multiple files can be specified separated by a OS-dependent character.
171 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
173 .Ip "\fB\-engine id\fR" 4
174 .IX Item "-engine id"
175 specifying an engine (by it's unique \fBid\fR string) will cause \fBreq\fR
176 to attempt to obtain a functional reference to the specified engine,
177 thus initialising it if needed. The engine will then be set as the default
178 for all available algorithms.
179 .Ip "\fBparamfile\fR" 4
181 This option specifies the \s-1DSA\s0 parameter file to use. The parameters in this
182 file determine the size of the private key. \s-1DSA\s0 parameters can be generated
183 and examined using the \fBopenssl dsaparam\fR command.
186 \&\s-1DSA\s0 key generation is little more than random number generation so it is
187 much quicker that \s-1RSA\s0 key generation for example.
189 .IX Header "SEE ALSO"
190 dsaparam(1), dsa(1), genrsa(1),