NAME

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

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 OpenSSL license (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>.