=pod

=head1 NAME

SSL_get0_group_name - get name of the group that was used for the key
agreement of the current TLS session establishment

=head1 SYNOPSIS

 #include <openssl/ssl.h>

 const char *SSL_get0_group_name(SSL *s);

=head1 DESCRIPTION

SSL_get0_group_name() returns the name of the group that was used for
the key agreement of the current TLS session establishment.

=head1 RETURN VALUES

If non-NULL, SSL_get0_group_name() returns the name of the group that was used for
the key agreement of the current TLS session establishment.
If SSL_get0_group_name() returns NULL, an error occurred; possibly no TLS session
has been established. See also L<SSL_get_negotiated_group(3)>.

Note that the return value is valid only during the lifetime of the
SSL object I<ssl>.

=head1 SEE ALSO

L<ssl(7)>,
L<SSL_get_negotiated_group(3)>

=head1 HISTORY

This function was added in OpenSSL 3.2.

=head1 COPYRIGHT

Copyright 2023-2025 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>.

=cut
