|  | =pod | 
|  |  | 
|  | =head1 NAME | 
|  |  | 
|  | pkeyparam - public key algorithm parameter processing tool | 
|  |  | 
|  | =head1 SYNOPSIS | 
|  |  | 
|  | B<openssl> B<pkeyparam> | 
|  | [B<-help>] | 
|  | [B<-in filename>] | 
|  | [B<-out filename>] | 
|  | [B<-text>] | 
|  | [B<-noout>] | 
|  | [B<-engine id>] | 
|  |  | 
|  | =head1 DESCRIPTION | 
|  |  | 
|  | The B<pkey> command processes public or private keys. They can be converted | 
|  | between various forms and their components printed out. | 
|  |  | 
|  | =head1 OPTIONS | 
|  |  | 
|  | =over 4 | 
|  |  | 
|  | =item B<-help> | 
|  |  | 
|  | Print out a usage message. | 
|  |  | 
|  | =item B<-in filename> | 
|  |  | 
|  | This specifies the input filename to read parameters from or standard input if | 
|  | this option is not specified. | 
|  |  | 
|  | =item B<-out filename> | 
|  |  | 
|  | This specifies the output filename to write parameters to or standard output if | 
|  | this option is not specified. | 
|  |  | 
|  | =item B<-text> | 
|  |  | 
|  | prints out the parameters in plain text in addition to the encoded version. | 
|  |  | 
|  | =item B<-noout> | 
|  |  | 
|  | do not output the encoded version of the parameters. | 
|  |  | 
|  | =item B<-engine id> | 
|  |  | 
|  | specifying an engine (by its unique B<id> string) will cause B<pkeyparam> | 
|  | to attempt to obtain a functional reference to the specified engine, | 
|  | thus initialising it if needed. The engine will then be set as the default | 
|  | for all available algorithms. | 
|  |  | 
|  | =back | 
|  |  | 
|  | =head1 EXAMPLE | 
|  |  | 
|  | Print out text version of parameters: | 
|  |  | 
|  | openssl pkeyparam -in param.pem -text | 
|  |  | 
|  | =head1 NOTES | 
|  |  | 
|  | There are no B<-inform> or B<-outform> options for this command because only | 
|  | PEM format is supported because the key type is determined by the PEM headers. | 
|  |  | 
|  | =head1 SEE ALSO | 
|  |  | 
|  | L<genpkey(1)>, L<rsa(1)>, L<pkcs8(1)>, | 
|  | L<dsa(1)>, L<genrsa(1)>, L<gendsa(1)> | 
|  |  | 
|  | =head1 COPYRIGHT | 
|  |  | 
|  | Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. | 
|  |  | 
|  | Licensed under the OpenSSL license (the "License").  You may not use | 
|  | this file except in compliance with the License.  You can obtain a copy | 
|  | in the file LICENSE in the source distribution or at | 
|  | L<https://www.openssl.org/source/license.html>. | 
|  |  | 
|  | =cut |