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      1 =pod
      2 
      3 =head1 NAME
      4 
      5 openssl-pkeyparam,
      6 pkeyparam - public key algorithm parameter processing tool
      7 
      8 =head1 SYNOPSIS
      9 
     10 B<openssl> B<pkeyparam>
     11 [B<-help>]
     12 [B<-in filename>]
     13 [B<-out filename>]
     14 [B<-text>]
     15 [B<-noout>]
     16 [B<-engine id>]
     17 [B<-check>]
     18 
     19 =head1 DESCRIPTION
     20 
     21 The B<pkeyparam> command processes public key algorithm parameters.
     22 They can be checked for correctness and their components printed out.
     23 
     24 =head1 OPTIONS
     25 
     26 =over 4
     27 
     28 =item B<-help>
     29 
     30 Print out a usage message.
     31 
     32 =item B<-in filename>
     33 
     34 This specifies the input filename to read parameters from or standard input if
     35 this option is not specified.
     36 
     37 =item B<-out filename>
     38 
     39 This specifies the output filename to write parameters to or standard output if
     40 this option is not specified.
     41 
     42 =item B<-text>
     43 
     44 Prints out the parameters in plain text in addition to the encoded version.
     45 
     46 =item B<-noout>
     47 
     48 Do not output the encoded version of the parameters.
     49 
     50 =item B<-engine id>
     51 
     52 Specifying an engine (by its unique B<id> string) will cause B<pkeyparam>
     53 to attempt to obtain a functional reference to the specified engine,
     54 thus initialising it if needed. The engine will then be set as the default
     55 for all available algorithms.
     56 
     57 =item B<-check>
     58 
     59 This option checks the correctness of parameters.
     60 
     61 =back
     62 
     63 =head1 EXAMPLES
     64 
     65 Print out text version of parameters:
     66 
     67  openssl pkeyparam -in param.pem -text
     68 
     69 =head1 NOTES
     70 
     71 There are no B<-inform> or B<-outform> options for this command because only
     72 PEM format is supported because the key type is determined by the PEM headers.
     73 
     74 =head1 SEE ALSO
     75 
     76 L<genpkey(1)>, L<rsa(1)>, L<pkcs8(1)>,
     77 L<dsa(1)>, L<genrsa(1)>, L<gendsa(1)>
     78 
     79 =head1 COPYRIGHT
     80 
     81 Copyright 2006-2019 The OpenSSL Project Authors. All Rights Reserved.
     82 
     83 Licensed under the OpenSSL license (the "License").  You may not use
     84 this file except in compliance with the License.  You can obtain a copy
     85 in the file LICENSE in the source distribution or at
     86 L<https://www.openssl.org/source/license.html>.
     87 
     88 =cut
     89