1=pod 2 3=head1 NAME 4 5EC_KEY_get_enc_flags, EC_KEY_set_enc_flags 6- Get and set flags for encoding EC_KEY structures 7 8=head1 SYNOPSIS 9 10 #include <openssl/ec.h> 11 12 unsigned int EC_KEY_get_enc_flags(const EC_KEY *key); 13 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); 14 15=head1 DESCRIPTION 16 17The format of the external representation of the public key written by 18i2d_ECPrivateKey() (such as whether it is stored in a compressed form or not) is 19described by the point_conversion_form. See L<EC_GROUP_copy(3)> 20for a description of point_conversion_form. 21 22When reading a private key encoded without an associated public key (e.g. if 23EC_PKEY_NO_PUBKEY has been used - see below), then d2i_ECPrivateKey() generates 24the missing public key automatically. Private keys encoded without parameters 25(e.g. if EC_PKEY_NO_PARAMETERS has been used - see below) cannot be loaded using 26d2i_ECPrivateKey(). 27 28The functions EC_KEY_get_enc_flags() and EC_KEY_set_enc_flags() get and set the 29value of the encoding flags for the B<key>. There are two encoding flags 30currently defined - EC_PKEY_NO_PARAMETERS and EC_PKEY_NO_PUBKEY. These flags 31define the behaviour of how the B<key> is converted into ASN1 in a call to 32i2d_ECPrivateKey(). If EC_PKEY_NO_PARAMETERS is set then the public parameters for 33the curve are not encoded along with the private key. If EC_PKEY_NO_PUBKEY is 34set then the public key is not encoded along with the private key. 35 36=head1 RETURN VALUES 37 38EC_KEY_get_enc_flags() returns the value of the current encoding flags for the 39EC_KEY. 40 41=head1 SEE ALSO 42 43L<crypto(7)>, L<EC_GROUP_new(3)>, 44L<EC_GROUP_copy(3)>, L<EC_POINT_new(3)>, 45L<EC_POINT_add(3)>, 46L<EC_GFp_simple_method(3)>, 47L<d2i_ECPKParameters(3)>, 48L<d2i_ECPrivateKey(3)> 49 50=head1 COPYRIGHT 51 52Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved. 53 54Licensed under the Apache License 2.0 (the "License"). You may not use 55this file except in compliance with the License. You can obtain a copy 56in the file LICENSE in the source distribution or at 57L<https://www.openssl.org/source/license.html>. 58 59=cut 60