Home | History | Annotate | Line # | Download | only in man1 
      1 =pod
      2 {- OpenSSL::safe::output_do_not_edit_headers(); -}
      3 
      4 =head1 NAME
      5 
      6 openssl-dsaparam - DSA parameter manipulation and generation
      7 
      8 =head1 SYNOPSIS
      9 
     10 B<openssl dsaparam>
     11 [B<-help>]
     12 [B<-inform> B<DER>|B<PEM>]
     13 [B<-outform> B<DER>|B<PEM>]
     14 [B<-in> I<filename>]
     15 [B<-out> I<filename>]
     16 [B<-noout>]
     17 [B<-text>]
     18 [B<-genkey>]
     19 [B<-verbose>]
     20 {- $OpenSSL::safe::opt_r_synopsis -}
     21 {- $OpenSSL::safe::opt_engine_synopsis -}{- $OpenSSL::safe::opt_provider_synopsis -}
     22 [I<numbits>]
     23 
     24 =head1 DESCRIPTION
     25 
     26 This command is used to manipulate or generate DSA parameter files.
     27 
     28 DSA parameter generation can be a slow process and as a result the same set of
     29 DSA parameters is often used to generate several distinct keys.
     30 
     31 =head1 OPTIONS
     32 
     33 =over 4
     34 
     35 =item B<-help>
     36 
     37 Print out a usage message.
     38 
     39 =item B<-inform> B<DER>|B<PEM>
     40 
     41 The DSA parameters input format; unspecified by default.
     42 See L<openssl-format-options(1)> for details.
     43 
     44 =item B<-outform> B<DER>|B<PEM>
     45 
     46 The DSA parameters output format; the default is B<PEM>.
     47 See L<openssl-format-options(1)> for details.
     48 
     49 Parameters are a sequence of B<ASN.1 INTEGER>s: B<p>, B<q>, and B<g>.
     50 This is compatible with RFC 2459 B<DSS-Parms> structure.
     51 
     52 =item B<-in> I<filename>
     53 
     54 This specifies the input filename to read parameters from or standard input if
     55 this option is not specified. If the I<numbits> parameter is included then
     56 this option will be ignored.
     57 
     58 =item B<-out> I<filename>
     59 
     60 This specifies the output filename parameters to. Standard output is used
     61 if this option is not present. The output filename should B<not> be the same
     62 as the input filename.
     63 
     64 =item B<-noout>
     65 
     66 This option inhibits the output of the encoded version of the parameters.
     67 
     68 =item B<-text>
     69 
     70 This option prints out the DSA parameters in human readable form.
     71 
     72 =item B<-genkey>
     73 
     74 This option will generate a DSA either using the specified or generated
     75 parameters.
     76 
     77 
     78 =item B<-verbose>
     79 
     80 Print extra details about the operations being performed.
     81 
     82 {- $OpenSSL::safe::opt_r_item -}
     83 
     84 {- $OpenSSL::safe::opt_engine_item -}
     85 
     86 =item I<numbits>
     87 
     88 This option specifies that a parameter set should be generated of size
     89 I<numbits>. It must be the last option. If this option is included then
     90 the input file (if any) is ignored.
     91 
     92 {- $OpenSSL::safe::opt_provider_item -}
     93 
     94 =back
     95 
     96 =head1 SEE ALSO
     97 
     98 L<openssl(1)>,
     99 L<openssl-pkeyparam(1)>,
    100 L<openssl-gendsa(1)>,
    101 L<openssl-dsa(1)>,
    102 L<openssl-genrsa(1)>,
    103 L<openssl-rsa(1)>
    104 
    105 =head1 HISTORY
    106 
    107 The B<-engine> option was deprecated in OpenSSL 3.0.
    108 
    109 The B<-C> option was removed in OpenSSL 3.0.
    110 
    111 =head1 COPYRIGHT
    112 
    113 Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
    114 
    115 Licensed under the Apache License 2.0 (the "License").  You may not use
    116 this file except in compliance with the License.  You can obtain a copy
    117 in the file LICENSE in the source distribution or at
    118 L<https://www.openssl.org/source/license.html>.
    119 
    120 =cut
    121