| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | openssl-gendsa,
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| 6 | gendsa - generate a DSA private key from a set of parameters
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| 7 |
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| 8 | =head1 SYNOPSIS
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| 9 |
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| 10 | B<openssl> B<gendsa>
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| 11 | [B<-help>]
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| 12 | [B<-out filename>]
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| 13 | [B<-aes128>]
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| 14 | [B<-aes192>]
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| 15 | [B<-aes256>]
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| 16 | [B<-aria128>]
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| 17 | [B<-aria192>]
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| 18 | [B<-aria256>]
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| 19 | [B<-camellia128>]
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| 20 | [B<-camellia192>]
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| 21 | [B<-camellia256>]
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| 22 | [B<-des>]
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| 23 | [B<-des3>]
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| 24 | [B<-idea>]
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| 25 | [B<-rand file...>]
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| 26 | [B<-writerand file>]
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| 27 | [B<-engine id>]
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| 28 | [B<paramfile>]
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| 29 |
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| 30 | =head1 DESCRIPTION
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| 31 |
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| 32 | The B<gendsa> command generates a DSA private key from a DSA parameter file
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| 33 | (which will be typically generated by the B<openssl dsaparam> command).
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| 34 |
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| 35 | =head1 OPTIONS
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| 36 |
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| 37 | =over 4
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| 38 |
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| 39 | =item B<-help>
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| 40 |
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| 41 | Print out a usage message.
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| 42 |
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| 43 | =item B<-out filename>
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| 44 |
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| 45 | Output the key to the specified file. If this argument is not specified then
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| 46 | standard output is used.
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| 47 |
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| 48 | =item B<-aes128>, B<-aes192>, B<-aes256>, B<-aria128>, B<-aria192>, B<-aria256>, B<-camellia128>, B<-camellia192>, B<-camellia256>, B<-des>, B<-des3>, B<-idea>
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| 49 |
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| 50 | These options encrypt the private key with specified
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| 51 | cipher before outputting it. A pass phrase is prompted for.
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| 52 | If none of these options is specified no encryption is used.
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| 53 |
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| 54 | =item B<-rand file...>
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| 55 |
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| 56 | A file or files containing random data used to seed the random number
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| 57 | generator.
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| 58 | Multiple files can be specified separated by an OS-dependent character.
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| 59 | The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
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| 60 | all others.
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| 61 |
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| 62 | =item [B<-writerand file>]
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| 63 |
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| 64 | Writes random data to the specified I<file> upon exit.
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| 65 | This can be used with a subsequent B<-rand> flag.
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| 66 |
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| 67 | =item B<-engine id>
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| 68 |
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| 69 | Specifying an engine (by its unique B<id> string) will cause B<gendsa>
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| 70 | to attempt to obtain a functional reference to the specified engine,
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| 71 | thus initialising it if needed. The engine will then be set as the default
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| 72 | for all available algorithms.
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| 73 |
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| 74 | =item B<paramfile>
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| 75 |
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| 76 | This option specifies the DSA parameter file to use. The parameters in this
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| 77 | file determine the size of the private key. DSA parameters can be generated
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| 78 | and examined using the B<openssl dsaparam> command.
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| 79 |
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| 80 | =back
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| 81 |
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| 82 | =head1 NOTES
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| 83 |
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| 84 | DSA key generation is little more than random number generation so it is
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| 85 | much quicker that RSA key generation for example.
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| 86 |
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| 87 | =head1 SEE ALSO
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| 88 |
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| 89 | L<dsaparam(1)>, L<dsa(1)>, L<genrsa(1)>,
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| 90 | L<rsa(1)>
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| 91 |
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| 92 | =head1 COPYRIGHT
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| 93 |
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| 94 | Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
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| 95 |
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| 96 | Licensed under the OpenSSL license (the "License"). You may not use
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| 97 | this file except in compliance with the License. You can obtain a copy
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| 98 | in the file LICENSE in the source distribution or at
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| 99 | L<https://www.openssl.org/source/license.html>.
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| 100 |
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| 101 | =cut
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