=head1 NAME
-EC_KEY_get_method, EC_KEY_set_method, EC_KEY_new_ex,
+EC_KEY_get_method, EC_KEY_set_method, EC_KEY_new_with_libctx,
EC_KEY_new, EC_KEY_get_flags, EC_KEY_set_flags, EC_KEY_clear_flags,
-EC_KEY_new_by_curve_name_ex, EC_KEY_new_by_curve_name, EC_KEY_free, EC_KEY_copy,
-EC_KEY_dup, EC_KEY_up_ref, EC_KEY_get0_engine,
+EC_KEY_new_by_curve_name_with_libctx, EC_KEY_new_by_curve_name, EC_KEY_free,
+EC_KEY_copy, EC_KEY_dup, EC_KEY_up_ref, EC_KEY_get0_engine,
EC_KEY_get0_group, EC_KEY_set_group, EC_KEY_get0_private_key,
EC_KEY_set_private_key, EC_KEY_get0_public_key, EC_KEY_set_public_key,
EC_KEY_get_conv_form,
#include <openssl/ec.h>
- EC_KEY *EC_KEY_new_ex(OPENSSL_CTX *ctx);
+ EC_KEY *EC_KEY_new_with_libctx(OPENSSL_CTX *ctx, const char *propq);
EC_KEY *EC_KEY_new(void);
int EC_KEY_get_flags(const EC_KEY *key);
void EC_KEY_set_flags(EC_KEY *key, int flags);
void EC_KEY_clear_flags(EC_KEY *key, int flags);
- EC_KEY *EC_KEY_new_by_curve_name_ex(OPENSSL_CTX *ctx, int nid);
+ EC_KEY *EC_KEY_new_by_curve_name_with_libctx(OPENSSL_CTX *ctx,
+ const char *propq, int nid);
EC_KEY *EC_KEY_new_by_curve_name(int nid);
void EC_KEY_free(EC_KEY *key);
EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
- int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
int EC_KEY_generate_key(EC_KEY *key);
int EC_KEY_check_key(const EC_KEY *key);
int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y);
size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf);
+Deprecated since OpenSSL 3.0:
+
+ int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
+
=head1 DESCRIPTION
An EC_KEY represents a public key and, optionally, the associated private
key.
A new EC_KEY with no associated curve can be constructed by calling
-EC_KEY_new_ex() and specifying the associated library context in B<ctx>
-(see L<OPENSSL_CTX(3)>).
-The B<ctx> parameter may be NULL in which case the default library context is
+EC_KEY_new_ex() and specifying the associated library context in I<ctx>
+(see L<OPENSSL_CTX(3)>) and property query string I<propq>.
+The I<ctx> parameter may be NULL in which case the default library context is
used.
The reference count for the newly created EC_KEY is initially
set to 1.
context is always used.
Alternatively a new EC_KEY can be constructed by calling
-EC_KEY_new_by_curve_name_ex() and supplying the nid of the associated curve and
-the library context to be used B<ctx> (see L<OPENSSL_CTX(3)>).
-The B<ctx> parameter may be NULL in which case the default library context is
-used.
+EC_KEY_new_by_curve_name_with_libctx() and supplying the nid of the associated
+curve, the library context to be used I<ctx> (see L<OPENSSL_CTX(3)>) and any
+property query string I<propq>.
+The I<ctx> parameter may be NULL in which case the default library context is
+used. The I<propq> value may also be NULL.
See L<EC_GROUP_new(3)> for a description of curve names.
This function simply wraps calls to EC_KEY_new_ex() and
-EC_GROUP_new_by_curve_name_ex().
+EC_GROUP_new_by_curve_name_with_libctx().
-EC_KEY_new_by_curve_name() is the same as EC_KEY_new_by_curve_name_ex() except
-that the default library context is always used.
+EC_KEY_new_by_curve_name() is the same as EC_KEY_new_by_curve_name_with_libctx()
+except that the default library context is always used and a NULL property query
+string.
Calling EC_KEY_free() decrements the reference count for the EC_KEY object,
and if it has dropped to zero then frees the memory associated with it. If
-B<key> is NULL nothing is done.
+I<key> is NULL nothing is done.
-EC_KEY_copy() copies the contents of the EC_KEY in B<src> into B<dest>.
+EC_KEY_copy() copies the contents of the EC_KEY in I<src> into I<dest>.
-EC_KEY_dup() creates a new EC_KEY object and copies B<ec_key> into it.
+EC_KEY_dup() creates a new EC_KEY object and copies I<ec_key> into it.
EC_KEY_up_ref() increments the reference count associated with the EC_KEY
object.
this EC_KEY object.
EC_KEY_generate_key() generates a new public and private key for the supplied
-B<eckey> object. B<eckey> must have an EC_GROUP object associated with it
+I<eckey> object. I<eckey> must have an EC_GROUP object associated with it
before calling this function. The private key is a random integer (0 < priv_key
< order, where I<order> is the order of the EC_GROUP object). The public key is
an EC_POINT on the curve calculated by multiplying the generator for the
EC_KEY_check_key() performs various sanity checks on the EC_KEY object to
confirm that it is valid.
-EC_KEY_set_public_key_affine_coordinates() sets the public key for B<key> based
+EC_KEY_set_public_key_affine_coordinates() sets the public key for I<key> based
on its affine co-ordinates; i.e., it constructs an EC_POINT object based on
-the supplied B<x> and B<y> values and sets the public key to be this
+the supplied I<x> and I<y> values and sets the public key to be this
EC_POINT. It also performs certain sanity checks on the key to confirm
that it is valid.
The functions EC_KEY_get0_group(), EC_KEY_set_group(),
EC_KEY_get0_private_key(), EC_KEY_set_private_key(), EC_KEY_get0_public_key(),
and EC_KEY_set_public_key() get and set the EC_GROUP object, the private key,
-and the EC_POINT public key for the B<key> respectively.
+and the EC_POINT public key for the I<key> respectively.
The functions EC_KEY_get_conv_form() and EC_KEY_set_conv_form() get and set the
-point_conversion_form for the B<key>. For a description of
+point_conversion_form for the I<key>. For a description of
point_conversion_forms please see L<EC_POINT_new(3)>.
-EC_KEY_set_flags() sets the flags in the B<flags> parameter on the EC_KEY
+EC_KEY_set_flags() sets the flags in the I<flags> parameter on the EC_KEY
object. Any flags that are already set are left set. The flags currently
defined are EC_FLAG_NON_FIPS_ALLOW and EC_FLAG_FIPS_CHECKED. In
addition there is the flag EC_FLAG_COFACTOR_ECDH which is specific to ECDH.
EC_KEY_get_flags() returns the current flags that are set for this EC_KEY.
-EC_KEY_clear_flags() clears the flags indicated by the B<flags> parameter; all
+EC_KEY_clear_flags() clears the flags indicated by the I<flags> parameter; all
other flags are left in their existing state.
EC_KEY_set_asn1_flag() sets the asn1_flag on the underlying EC_GROUP object
(if set). Refer to L<EC_GROUP_copy(3)> for further information on the
asn1_flag.
+Although deprecated in OpenSSL 3.0 and should no longer be used,
EC_KEY_precompute_mult() stores multiples of the underlying EC_GROUP generator
for faster point multiplication. See also L<EC_POINT_add(3)>.
+Modern versions should instead switch to named curves which OpenSSL has
+hardcoded lookup tables for.
EC_KEY_oct2key() and EC_KEY_key2buf() are identical to the functions
-EC_POINT_oct2point() and EC_KEY_point2buf() except they use the public key
-EC_POINT in B<eckey>.
+EC_POINT_oct2point() and EC_POINT_point2buf() except they use the public key
+EC_POINT in I<eckey>.
EC_KEY_oct2priv() and EC_KEY_priv2oct() convert between the private key
-component of B<eckey> and octet form. The octet form consists of the content
-octets of the B<privateKey> OCTET STRING in an B<ECPrivateKey> ASN.1 structure.
+component of I<eckey> and octet form. The octet form consists of the content
+octets of the I<privateKey> OCTET STRING in an I<ECPrivateKey> ASN.1 structure.
The function EC_KEY_priv2oct() must be supplied with a buffer long enough to
store the octet form. The return value provides the number of octets stored.
will just return the required buffer length.
The function EC_KEY_priv2buf() allocates a buffer of suitable length and writes
-an EC_KEY to it in octet format. The allocated buffer is written to B<*pbuf>
+an EC_KEY to it in octet format. The allocated buffer is written to I<*pbuf>
and its length is returned. The caller must free up the allocated buffer with a
-call to OPENSSL_free(). Since the allocated buffer value is written to B<*pbuf>
-the
B<pbuf> parameter B<MUST NOT> be B<NULL>.
+call to OPENSSL_free(). Since the allocated buffer value is written to I<*pbuf>
+the
I<pbuf> parameter B<MUST NOT> be B<NULL>.
EC_KEY_priv2buf() converts an EC_KEY private key into an allocated buffer.
=head1 RETURN VALUES
-EC_KEY_new_ex(), EC_KEY_new(), EC_KEY_new_by_curve_name() and EC_KEY_dup()
-return a pointer to the newly created EC_KEY object, or NULL on error.
+EC_KEY_new_with_libctx(), EC_KEY_new(), EC_KEY_new_by_curve_name_with_libctx(),
+EC_KEY_new_by_curve_name() and EC_KEY_dup() return a pointer to the newly
+created EC_KEY object, or NULL on error.
EC_KEY_get_flags() returns the flags associated with the EC_KEY object as an
integer.
L<d2i_ECPKParameters(3)>,
L<OPENSSL_CTX(3)>
+=head1 HISTORY
+
+EC_KEY_precompute_mult() was deprecated in OpenSSL 3.0.
+
=head1 COPYRIGHT
-Copyright 2013-2017 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2013-2020 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
projects / openssl.git / blobdiff