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129.\" ========================================================================
130.\"
131.IX Title "GENDSA 1"
aac4ff6f 132.TH GENDSA 1 "2008-09-06" "0.9.8h" "OpenSSL"
984263bc 133.SH "NAME"
e3cdf75b 134gendsa \- generate a DSA private key from a set of parameters
984263bc 135.SH "SYNOPSIS"
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136.IX Header "SYNOPSIS"
137\&\fBopenssl\fR \fBgendsa\fR
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138[\fB\-out filename\fR]
139[\fB\-des\fR]
140[\fB\-des3\fR]
141[\fB\-idea\fR]
e3cdf75b 142[\fB\-rand file(s)\fR]
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143[\fB\-engine id\fR]
144[\fBparamfile\fR]
145.SH "DESCRIPTION"
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146.IX Header "DESCRIPTION"
147The \fBgendsa\fR command generates a \s-1DSA\s0 private key from a \s-1DSA\s0 parameter file
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148(which will be typically generated by the \fBopenssl dsaparam\fR command).
149.SH "OPTIONS"
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150.IX Header "OPTIONS"
151.IP "\fB\-des|\-des3|\-idea\fR" 4
152.IX Item "-des|-des3|-idea"
984263bc 153These options encrypt the private key with the \s-1DES\s0, triple \s-1DES\s0, or the
8b0cefbb 154\&\s-1IDEA\s0 ciphers respectively before outputting it. A pass phrase is prompted for.
984263bc 155If none of these options is specified no encryption is used.
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156.IP "\fB\-rand file(s)\fR" 4
157.IX Item "-rand file(s)"
984263bc 158a file or files containing random data used to seed the random number
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159generator, or an \s-1EGD\s0 socket (see \fIRAND_egd\fR\|(3)).
160Multiple files can be specified separated by a OS-dependent character.
aac4ff6f 161The separator is \fB;\fR for MS\-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
984263bc 162all others.
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163.IP "\fB\-engine id\fR" 4
164.IX Item "-engine id"
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165specifying an engine (by it's unique \fBid\fR string) will cause \fBreq\fR
166to attempt to obtain a functional reference to the specified engine,
167thus initialising it if needed. The engine will then be set as the default
168for all available algorithms.
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169.IP "\fBparamfile\fR" 4
170.IX Item "paramfile"
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171This option specifies the \s-1DSA\s0 parameter file to use. The parameters in this
172file determine the size of the private key. \s-1DSA\s0 parameters can be generated
173and examined using the \fBopenssl dsaparam\fR command.
174.SH "NOTES"
e3cdf75b 175.IX Header "NOTES"
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176\&\s-1DSA\s0 key generation is little more than random number generation so it is
177much quicker that \s-1RSA\s0 key generation for example.
178.SH "SEE ALSO"
e3cdf75b 179.IX Header "SEE ALSO"
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180\&\fIdsaparam\fR\|(1), \fIdsa\fR\|(1), \fIgenrsa\fR\|(1),
181\&\fIrsa\fR\|(1)