Updated: 2022/Sep/29

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EC_KEY_get_enc_flags(3)             OpenSSL            EC_KEY_get_enc_flags(3)



NAME
       EC_KEY_get_enc_flags, EC_KEY_set_enc_flags - Get and set flags for
       encoding EC_KEY structures

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/ec.h>

        unsigned int EC_KEY_get_enc_flags(const EC_KEY *key);
        void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);

DESCRIPTION
       The format of the external representation of the public key written by
       i2d_ECPrivateKey() (such as whether it is stored in a compressed form
       or not) is described by the point_conversion_form. See EC_GROUP_copy(3)
       for a description of point_conversion_form.

       When reading a private key encoded without an associated public key
       (e.g. if EC_PKEY_NO_PUBKEY has been used - see below), then
       d2i_ECPrivateKey() generates the missing public key automatically.
       Private keys encoded without parameters (e.g. if EC_PKEY_NO_PARAMETERS
       has been used - see below) cannot be loaded using d2i_ECPrivateKey().

       The functions EC_KEY_get_enc_flags() and EC_KEY_set_enc_flags() get and
       set the value of the encoding flags for the key. There are two encoding
       flags currently defined - EC_PKEY_NO_PARAMETERS and EC_PKEY_NO_PUBKEY.
       These flags define the behaviour of how the  key is converted into ASN1
       in a call to i2d_ECPrivateKey(). If EC_PKEY_NO_PARAMETERS is set then
       the public parameters for the curve are not encoded along with the
       private key. If EC_PKEY_NO_PUBKEY is set then the public key is not
       encoded along with the private key.

RETURN VALUES
       EC_KEY_get_enc_flags() returns the value of the current encoding flags
       for the EC_KEY.

SEE ALSO
       crypto(7), EC_GROUP_new(3), EC_GROUP_copy(3), EC_POINT_new(3),
       EC_POINT_add(3), EC_GFp_simple_method(3), d2i_ECPKParameters(3),
       d2i_ECPrivateKey(3)

COPYRIGHT
       Copyright 2015-2017 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           EC_KEY_get_enc_flags(3)