EVP_PKEY_GET_FIELD_TYPE - Online Linux Manual PageSection : 3ossl
Updated : 2022-03-15
Source : 3.0.2
Note : OpenSSL
NAMEEVP_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);
DESCRIPTIONEVP_PKEY_get_field_type() 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.
NOTESAmong the standard OpenSSL key types, this is only supported for EC and SM2 keys. Other providers may support this for additional key types.
RETURN VALUESEVP_PKEY_get_field_type() 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 ALSOEC_GROUP_copy (3)
HISTORYThese functions were added in OpenSSL 3.0.
COPYRIGHTCopyright 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>. 0
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