1=pod 2 3=head1 NAME 4 5EVP_PKEY_get_group_name - get group name of a key 6 7=head1 SYNOPSIS 8 9 #include <openssl/evp.h> 10 11 int EVP_PKEY_get_group_name(EVP_PKEY *pkey, char *gname, size_t gname_sz, 12 size_t *gname_len); 13 14=head1 DESCRIPTION 15 16EVP_PKEY_get_group_name() fills in the group name of the I<pkey> into 17I<gname>, up to at most I<gname_sz> bytes including the ending NUL byte 18and assigns I<*gname_len> the actual length of the name not including 19the NUL byte, if I<pkey>'s key type supports it. 20I<gname> as well as I<gname_len> may individually be NULL, and won't be 21filled in or assigned in that case. 22 23=head1 NOTES 24 25Among the standard OpenSSL key types, this is only supported for DH, EC and 26SM2 keys. Other providers may support this for additional key types. 27 28=head1 RETURN VALUES 29 30EVP_PKEY_get_group_name() returns 1 if the group name could be filled in, 31otherwise 0. 32 33=head1 HISTORY 34 35This function was added in OpenSSL 3.0. 36 37=head1 COPYRIGHT 38 39Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. 40 41Licensed under the Apache License 2.0 (the "License"). You may not use 42this file except in compliance with the License. You can obtain a copy 43in the file LICENSE in the source distribution or at 44L<https://www.openssl.org/source/license.html>. 45 46=cut 47