openssl/doc/apps/pkeyparam.pod

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=pod
=head1 NAME
pkeyparam - public key algorithm parameter processing tool
=head1 SYNOPSIS
B<openssl> B<pkeyparam>
[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 COMMAND OPTIONS
=over 4
=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>
2009-04-15 23:27:03 +08:00
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)|genpkey(1)>, L<rsa(1)|rsa(1)>, L<pkcs8(1)|pkcs8(1)>,
L<dsa(1)|dsa(1)>, L<genrsa(1)|genrsa(1)>, L<gendsa(1)|gendsa(1)>
=cut