Updated: 2022/Sep/29

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EVP_PKEY_get_group_name(3)          OpenSSL         EVP_PKEY_get_group_name(3)



NAME
       EVP_PKEY_get_group_name - get group name of a key

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/evp.h>

        int EVP_PKEY_get_group_name(EVP_PKEY *pkey, char *gname, size_t gname_sz,
                                    size_t *gname_len);

DESCRIPTION
       EVP_PKEY_get_group_name() fills in the group name of the pkey into
       gname, up to at most gname_sz bytes including the ending NUL byte and
       assigns *gname_len the actual length of the name not including the NUL
       byte, if pkey's key type supports it.  gname as well as gname_len may
       individually be NULL, and won't be filled in or assigned in that case.

NOTES
       Among the standard OpenSSL key types, this is only supported for DH, EC
       and SM2 keys.  Other providers may support this for additional key
       types.

RETURN VALUES
       EVP_PKEY_get_group_name() returns 1 if the group name could be filled
       in, otherwise 0.

HISTORY
       This function was added in OpenSSL 3.0.

COPYRIGHT
       Copyright 2020-2021 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
       <https://www.openssl.org/source/license.html>.



3.0.12                            2023-05-07        EVP_PKEY_get_group_name(3)