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.\" ========================================================================
.\"
.IX Title "EC_KEY_GET_ENC_FLAGS 3"
.TH EC_KEY_GET_ENC_FLAGS 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
EC_KEY_get_enc_flags, EC_KEY_set_enc_flags \&\- Get and set flags for encoding EC_KEY structures
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #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);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The format of the external representation of the public key written by
\&\fBi2d_ECPrivateKey()\fR (such as whether it is stored in a compressed form or not) is
described by the point_conversion_form. See \fBEC_GROUP_copy\fR\|(3)
for a description of point_conversion_form.
.PP
When reading a private key encoded without an associated public key (e.g. if
\&\s-1EC_PKEY_NO_PUBKEY\s0 has been used \- see below), then \fBd2i_ECPrivateKey()\fR generates
the missing public key automatically. Private keys encoded without parameters
(e.g. if \s-1EC_PKEY_NO_PARAMETERS\s0 has been used \- see below) cannot be loaded using
\&\fBd2i_ECPrivateKey()\fR.
.PP
The functions \fBEC_KEY_get_enc_flags()\fR and \fBEC_KEY_set_enc_flags()\fR get and set the
value of the encoding flags for the \fBkey\fR. There are two encoding flags
currently defined \- \s-1EC_PKEY_NO_PARAMETERS\s0 and \s-1EC_PKEY_NO_PUBKEY.\s0  These flags
define the behaviour of how the  \fBkey\fR is converted into \s-1ASN1\s0 in a call to
\&\fBi2d_ECPrivateKey()\fR. If \s-1EC_PKEY_NO_PARAMETERS\s0 is set then the public parameters for
the curve are not encoded along with the private key. If \s-1EC_PKEY_NO_PUBKEY\s0 is
set then the public key is not encoded along with the private key.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBEC_KEY_get_enc_flags()\fR returns the value of the current encoding flags for the
\&\s-1EC_KEY.\s0
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBcrypto\fR\|(7), \fBEC_GROUP_new\fR\|(3),
\&\fBEC_GROUP_copy\fR\|(3), \fBEC_POINT_new\fR\|(3),
\&\fBEC_POINT_add\fR\|(3),
\&\fBEC_GFp_simple_method\fR\|(3),
\&\fBd2i_ECPKParameters\fR\|(3),
\&\fBd2i_ECPrivateKey\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2015\-2017 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.