=head1 NAME
-EVP_PKEY_copy_parameters, EVP_PKEY_missing_parameters, EVP_PKEY_cmp_parameters, EVP_PKEY_cmp - public key parameter and comparison functions
+EVP_PKEY_copy_parameters, EVP_PKEY_missing_parameters, EVP_PKEY_cmp_parameters,
+EVP_PKEY_cmp - public key parameter and comparison functions
=head1 SYNOPSIS
doesn't use parameters.
The function EVP_PKEY_copy_parameters() copies the parameters from key
-B<from> to key B<to>.
+B<from> to key B<to>. An error is returned if the parameters are missing in
+B<from> or present in both B<from> and B<to> and mismatch. If the parameters
+in B<from> and B<to> are both present and match this function has no effect.
-The funcion EVP_PKEY_cmp_parameters() compares the parameters of keys
+The function EVP_PKEY_cmp_parameters() compares the parameters of keys
B<a> and B<b>.
-The funcion EVP_PKEY_cmp() compares the public key components and paramters
+The function EVP_PKEY_cmp() compares the public key components and parameters
(if present) of keys B<a> and B<b>.
=head1 NOTES
=head1 SEE ALSO
-L<EVP_PKEY_CTX_new(3)|EVP_PKEY_CTX_new(3)>,
-L<EVP_PKEY_keygen(3)|EVP_PKEY_keygen(3)>
+L<EVP_PKEY_CTX_new(3)>,
+L<EVP_PKEY_keygen(3)>
+
+=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