| 1 | =pod
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| 2 | {- OpenSSL::safe::output_do_not_edit_headers(); -}
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| 3 |
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| 4 | =head1 NAME
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| 5 |
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| 6 | openssl-dsaparam - DSA parameter manipulation and generation
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| 7 |
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| 8 | =head1 SYNOPSIS
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| 9 |
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| 10 | B<openssl dsaparam>
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| 11 | [B<-help>]
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| 12 | [B<-inform> B<DER>|B<PEM>]
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| 13 | [B<-outform> B<DER>|B<PEM>]
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| 14 | [B<-in> I<filename>]
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| 15 | [B<-out> I<filename>]
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| 16 | [B<-noout>]
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| 17 | [B<-text>]
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| 18 | [B<-genkey>]
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| 19 | [B<-verbose>]
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| 20 | {- $OpenSSL::safe::opt_r_synopsis -}
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| 21 | {- $OpenSSL::safe::opt_engine_synopsis -}{- $OpenSSL::safe::opt_provider_synopsis -}
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| 22 | [I<numbits>]
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| 23 |
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| 24 | =head1 DESCRIPTION
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| 25 |
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| 26 | This command is used to manipulate or generate DSA parameter files.
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| 27 |
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| 28 | DSA parameter generation can be a slow process and as a result the same set of
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| 29 | DSA parameters is often used to generate several distinct keys.
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| 30 |
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| 31 | =head1 OPTIONS
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| 32 |
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| 33 | =over 4
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| 34 |
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| 35 | =item B<-help>
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| 36 |
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| 37 | Print out a usage message.
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| 38 |
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| 39 | =item B<-inform> B<DER>|B<PEM>
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| 40 |
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| 41 | The DSA parameters input format; unspecified by default.
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| 42 | See L<openssl-format-options(1)> for details.
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| 43 |
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| 44 | =item B<-outform> B<DER>|B<PEM>
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| 45 |
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| 46 | The DSA parameters output format; the default is B<PEM>.
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| 47 | See L<openssl-format-options(1)> for details.
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| 48 |
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| 49 | Parameters are a sequence of B<ASN.1 INTEGER>s: B<p>, B<q>, and B<g>.
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| 50 | This is compatible with RFC 2459 B<DSS-Parms> structure.
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| 51 |
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| 52 | =item B<-in> I<filename>
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| 53 |
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| 54 | This specifies the input filename to read parameters from or standard input if
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| 55 | this option is not specified. If the I<numbits> parameter is included then
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| 56 | this option will be ignored.
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| 57 |
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| 58 | =item B<-out> I<filename>
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| 59 |
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| 60 | This specifies the output filename parameters to. Standard output is used
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| 61 | if this option is not present. The output filename should B<not> be the same
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| 62 | as the input filename.
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| 63 |
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| 64 | =item B<-noout>
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| 65 |
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| 66 | This option inhibits the output of the encoded version of the parameters.
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| 67 |
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| 68 | =item B<-text>
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| 69 |
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| 70 | This option prints out the DSA parameters in human readable form.
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| 71 |
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| 72 | =item B<-genkey>
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| 73 |
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| 74 | This option will generate a DSA either using the specified or generated
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| 75 | parameters.
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| 76 |
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| 77 |
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| 78 | =item B<-verbose>
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| 79 |
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| 80 | Print extra details about the operations being performed.
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| 81 |
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| 82 | {- $OpenSSL::safe::opt_r_item -}
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| 83 |
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| 84 | {- $OpenSSL::safe::opt_engine_item -}
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| 85 |
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| 86 | =item I<numbits>
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| 87 |
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| 88 | This option specifies that a parameter set should be generated of size
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| 89 | I<numbits>. It must be the last option. If this option is included then
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| 90 | the input file (if any) is ignored.
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| 91 |
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| 92 | {- $OpenSSL::safe::opt_provider_item -}
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| 93 |
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| 94 | =back
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| 95 |
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| 96 | =head1 SEE ALSO
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| 97 |
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| 98 | L<openssl(1)>,
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| 99 | L<openssl-pkeyparam(1)>,
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| 100 | L<openssl-gendsa(1)>,
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| 101 | L<openssl-dsa(1)>,
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| 102 | L<openssl-genrsa(1)>,
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| 103 | L<openssl-rsa(1)>
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| 104 |
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| 105 | =head1 HISTORY
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| 106 |
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| 107 | The B<-engine> option was deprecated in OpenSSL 3.0.
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| 108 |
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| 109 | The B<-C> option was removed in OpenSSL 3.0.
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| 110 |
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| 111 | =head1 COPYRIGHT
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| 112 |
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| 113 | Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 114 |
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| 115 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 116 | this file except in compliance with the License. You can obtain a copy
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| 117 | in the file LICENSE in the source distribution or at
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| 118 | L<https://www.openssl.org/source/license.html>.
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| 119 |
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| 120 | =cut
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