#include <openssl/ec.h>
+Deprecated since OpenSSL 3.0:
+
const EC_METHOD *EC_GFp_simple_method(void);
const EC_METHOD *EC_GFp_mont_method(void);
const EC_METHOD *EC_GFp_nist_method(void);
=head1 DESCRIPTION
+
+All const EC_METHOD *EC_GF* functions were deprecated in OpenSSL 3.0, since
+EC_METHOD is no longer a public concept.
+
The Elliptic Curve library provides a number of different implementations through a single common interface.
When constructing a curve using EC_GROUP_new (see L<EC_GROUP_new(3)>) an
implementation method must be provided. The functions described here all return a const pointer to an
optimised implementations for the NIST P224, P256 and P521 curves respectively. Note, however, that these
implementations are not available on all platforms.
-EC_METHOD_get_field_type identifies what type of field the EC_METHOD structure supports, which will be either
-F2^m or Fp. If the field type is Fp then the value B<NID_X9_62_prime_field> is returned. If the field type is
-F2^m then the value B<NID_X9_62_characteristic_two_field> is returned. These values are defined in the
-obj_mac.h header file.
+EC_METHOD_get_field_type() was deprecated in OpenSSL 3.0.
+Applications should use EC_GROUP_get_field_type() as a replacement (see L<EC_GROUP_copy(3)>).
=head1 RETURN VALUES
L<d2i_ECPKParameters(3)>,
L<BN_mod_mul_montgomery(3)>
+=head1 HISTORY
+
+EC_GFp_simple_method(), EC_GFp_mont_method(void),
+EC_GFp_nist_method(), EC_GFp_nistp224_method(),
+EC_GFp_nistp256_method(), EC_GFp_nistp521_method(),
+EC_GF2m_simple_method(), and EC_METHOD_get_field_type()
+were deprecated in OpenSSL 3.0.
+
=head1 COPYRIGHT
Copyright 2013-2017 The OpenSSL Project Authors. All Rights Reserved.