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=head1 NAME

EVP_KEYEXCH_free, EVP_KEYEXCH_up_ref
- Functions to manage EVP_KEYEXCH algorithm objects

=head1 SYNOPSIS

 #include <openssl/evp.h>

 void EVP_KEYEXCH_free(EVP_KEYEXCH *exchange);
 int EVP_KEYEXCH_up_ref(EVP_KEYEXCH *exchange);

=head1 DESCRIPTION

EVP_KEYEXCH_free() decrements the reference count for the B<EVP_KEYEXCH>
structure. Typically this structure will have been obtained from an earlier call
to L<EVP_KEYEXCH_fetch(3)>. If the reference count drops to 0 then the
structure is freed.

EVP_KEYEXCH_up_ref() increments the reference count for an B<EVP_KEYEXCH>
structure.

=head1 RETURN VALUES

EVP_KEYEXCH_up_ref() returns 1 for success or 0 otherwise.

=head1 SEE ALSO

L<EVP_KEYEXCH_fetch(3)>

=head1 HISTORY

The functions described here were added in OpenSSL 3.0.

=head1 COPYRIGHT

Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (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>.

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