EVP_PKEY_GET_FIELD_TYPE(3ossl) OpenSSL EVP_PKEY_GET_FIELD_TYPE(3ossl)
NAME
EVP_PKEY_get_field_type, EVP_PKEY_get_ec_point_conv_form - get field
type or point conversion form of a key
SYNOPSIS
#include <openssl/evp.h>
int EVP_PKEY_get_field_type(const EVP_PKEY *pkey);
int EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY *pkey);
DESCRIPTION
EVP_PKEY_get_field_type(3) returns the field type NID of the pkey, if
pkey's key type supports it. The types currently supported by the
built-in OpenSSL providers are either NID_X9_62_prime_field for prime
curves or NID_X9_62_characteristic_two_field for binary curves; these
values are defined in the <openssl/obj_mac.h> header file.
EVP_PKEY_get_ec_point_conv_form() returns the point conversion format
of the pkey, if pkey's key type supports it.
NOTES
Among the standard OpenSSL key types, this is only supported for EC and
SM2 keys. Other providers may support this for additional key types.
RETURN VALUES
EVP_PKEY_get_field_type(3) returns the field type NID or 0 on error.
EVP_PKEY_get_ec_point_conv_form() returns the point conversion format
number (see EC_GROUP_copy(3)) or 0 on error.
SEE ALSO
EC_GROUP_copy(3)
HISTORY
These functions were added in OpenSSL 3.0.
COPYRIGHT
Copyright 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>.
3.3.2 2024-09-04 EVP_PKEY_GET_FIELD_TYPE(3ossl)
openssl 3.3.2 - Generated Sat Sep 14 08:11:25 CDT 2024