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140 .IX Title "DSAPARAM 1"
141 .TH DSAPARAM 1 "perl v5.6.1" "2000-11-13" "User Contributed Perl Documentation"
144 dsaparam \- \s-1DSA\s0 parameter manipulation and generation
146 .IX Header "SYNOPSIS"
147 \&\fBopenssl dsaparam\fR
148 [\fB\-inform DER|PEM\fR]
149 [\fB\-outform DER|PEM\fR]
150 [\fB\-in filename\fR]
151 [\fB\-out filename\fR]
155 [\fB\-rand \f(BIfile\fB\|(s)\fR]
159 .IX Header "DESCRIPTION"
160 This command is used to manipulate or generate \s-1DSA\s0 parameter files.
163 .Ip "\fB\-inform DER|PEM\fR" 4
164 .IX Item "-inform DER|PEM"
165 This specifies the input format. The \fB\s-1DER\s0\fR option uses an \s-1ASN1\s0 \s-1DER\s0 encoded
166 form compatible with \s-1RFC2459\s0 (\s-1PKIX\s0) DSS-Parms that is a \s-1SEQUENCE\s0 consisting
167 of p, q and g respectively. The \s-1PEM\s0 form is the default format: it consists
168 of the \fB\s-1DER\s0\fR format base64 encoded with additional header and footer lines.
169 .Ip "\fB\-outform DER|PEM\fR" 4
170 .IX Item "-outform DER|PEM"
171 This specifies the output format, the options have the same meaning as the
172 \&\fB\-inform\fR option.
173 .Ip "\fB\-in filename\fR" 4
174 .IX Item "-in filename"
175 This specifies the input filename to read parameters from or standard input if
176 this option is not specified. If the \fBnumbits\fR parameter is included then
177 this option will be ignored.
178 .Ip "\fB\-out filename\fR" 4
179 .IX Item "-out filename"
180 This specifies the output filename parameters to. Standard output is used
181 if this option is not present. The output filename should \fBnot\fR be the same
182 as the input filename.
183 .Ip "\fB\-noout\fR" 4
185 this option inhibits the output of the encoded version of the parameters.
188 this option prints out the \s-1DSA\s0 parameters in human readable form.
191 this option converts the parameters into C code. The parameters can then
192 be loaded by calling the \fB\f(BIget_dsaXXX()\fB\fR function.
193 .Ip "\fB\-genkey\fR" 4
195 this option will generate a \s-1DSA\s0 either using the specified or generated
197 .Ip "\fB\-rand \f(BIfile\fB\|(s)\fR" 4
198 .IX Item "-rand file"
199 a file or files containing random data used to seed the random number
200 generator, or an \s-1EGD\s0 socket (see RAND_egd(3)).
201 Multiple files can be specified separated by a OS-dependent character.
202 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
204 .Ip "\fBnumbits\fR" 4
206 this option specifies that a parameter set should be generated of size
207 \&\fBnumbits\fR. It must be the last option. If this option is included then
208 the input file (if any) is ignored.
211 \&\s-1PEM\s0 format \s-1DSA\s0 parameters use the header and footer lines:
214 \& -----BEGIN DSA PARAMETERS-----
215 \& -----END DSA PARAMETERS-----
217 \&\s-1DSA\s0 parameter generation is a slow process and as a result the same set of
218 \&\s-1DSA\s0 parameters is often used to generate several distinct keys.
220 .IX Header "SEE ALSO"
221 gendsa(1), dsa(1), genrsa(1),