EC_KEY_GET_ENC_FLAGS - Online Linux Manual PageSection : 3
Updated : 2021-03-26
Source : 1.1.1k
Note : OpenSSL
NAMEEC_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);
DESCRIPTIONThe 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)
COPYRIGHTCopyright 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>. 0
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