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-/* $OpenBSD: ec.h,v 1.18 2019/09/29 10:09:09 tb Exp $ */
-/*
- * Originally written by Bodo Moeller for the OpenSSL project.
- */
-/**
- * \file crypto/ec/ec.h Include file for the OpenSSL EC functions
- * \author Originally written by Bodo Moeller for the OpenSSL project
- */
-/* ====================================================================
- * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- *
- * Portions of the attached software ("Contribution") are developed by
- * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
- *
- * The Contribution is licensed pursuant to the OpenSSL open source
- * license provided above.
- *
- * The elliptic curve binary polynomial software is originally written by
- * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
- *
- */
-
-#ifndef HEADER_EC_H
-#define HEADER_EC_H
-
-#include <openssl/opensslconf.h>
-
-#ifdef OPENSSL_NO_EC
-#error EC is disabled.
-#endif
-
-#include <openssl/asn1.h>
-#ifndef OPENSSL_NO_DEPRECATED
-#include <openssl/bn.h>
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#elif defined(__SUNPRO_C)
-# if __SUNPRO_C >= 0x520
-# pragma error_messages (off,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
-# endif
-#endif
-
-
-#ifndef OPENSSL_ECC_MAX_FIELD_BITS
-#define OPENSSL_ECC_MAX_FIELD_BITS 661
-#endif
-
-/** Enum for the point conversion form as defined in X9.62 (ECDSA)
- * for the encoding of a elliptic curve point (x,y) */
-typedef enum {
- /** the point is encoded as z||x, where the octet z specifies
- * which solution of the quadratic equation y is */
- POINT_CONVERSION_COMPRESSED = 2,
- /** the point is encoded as z||x||y, where z is the octet 0x02 */
- POINT_CONVERSION_UNCOMPRESSED = 4,
- /** the point is encoded as z||x||y, where the octet z specifies
- * which solution of the quadratic equation y is */
- POINT_CONVERSION_HYBRID = 6
-} point_conversion_form_t;
-
-
-typedef struct ec_method_st EC_METHOD;
-
-typedef struct ec_group_st
- /*
- EC_METHOD *meth;
- -- field definition
- -- curve coefficients
- -- optional generator with associated information (order, cofactor)
- -- optional extra data (precomputed table for fast computation of multiples of generator)
- -- ASN1 stuff
- */
- EC_GROUP;
-
-typedef struct ec_point_st EC_POINT;
-
-
-/********************************************************************/
-/* EC_METHODs for curves over GF(p) */
-/********************************************************************/
-
-/** Returns the basic GFp ec methods which provides the basis for the
- * optimized methods.
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_simple_method(void);
-
-/** Returns GFp methods using montgomery multiplication.
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_mont_method(void);
-
-/** Returns GFp methods using optimized methods for NIST recommended curves
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_nist_method(void);
-
-#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
-/** Returns 64-bit optimized methods for nistp224
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_nistp224_method(void);
-
-/** Returns 64-bit optimized methods for nistp256
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_nistp256_method(void);
-
-/** Returns 64-bit optimized methods for nistp521
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GFp_nistp521_method(void);
-#endif
-
-#ifndef OPENSSL_NO_EC2M
-/********************************************************************/
-/* EC_METHOD for curves over GF(2^m) */
-/********************************************************************/
-
-/** Returns the basic GF2m ec method
- * \return EC_METHOD object
- */
-const EC_METHOD *EC_GF2m_simple_method(void);
-
-#endif
-
-
-/********************************************************************/
-/* EC_GROUP functions */
-/********************************************************************/
-
-/** Creates a new EC_GROUP object
- * \param meth EC_METHOD to use
- * \return newly created EC_GROUP object or NULL in case of an error.
- */
-EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
-
-/** Frees a EC_GROUP object
- * \param group EC_GROUP object to be freed.
- */
-void EC_GROUP_free(EC_GROUP *group);
-
-/** Clears and frees a EC_GROUP object
- * \param group EC_GROUP object to be cleared and freed.
- */
-void EC_GROUP_clear_free(EC_GROUP *group);
-
-/** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
- * \param dst destination EC_GROUP object
- * \param src source EC_GROUP object
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
-
-/** Creates a new EC_GROUP object and copies the copies the content
- * form src to the newly created EC_KEY object
- * \param src source EC_GROUP object
- * \return newly created EC_GROUP object or NULL in case of an error.
- */
-EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
-
-/** Returns the EC_METHOD of the EC_GROUP object.
- * \param group EC_GROUP object
- * \return EC_METHOD used in this EC_GROUP object.
- */
-const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
-
-/** Returns the field type of the EC_METHOD.
- * \param meth EC_METHOD object
- * \return NID of the underlying field type OID.
- */
-int EC_METHOD_get_field_type(const EC_METHOD *meth);
-
-/** Sets the generator and it's order/cofactor of a EC_GROUP object.
- * \param group EC_GROUP object
- * \param generator EC_POINT object with the generator.
- * \param order the order of the group generated by the generator.
- * \param cofactor the index of the sub-group generated by the generator
- * in the group of all points on the elliptic curve.
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor);
-
-/** Returns the generator of a EC_GROUP object.
- * \param group EC_GROUP object
- * \return the currently used generator (possibly NULL).
- */
-const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
-
-/** Gets the order of a EC_GROUP
- * \param group EC_GROUP object
- * \param order BIGNUM to which the order is copied
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
-
-/** Gets the cofactor of a EC_GROUP
- * \param group EC_GROUP object
- * \param cofactor BIGNUM to which the cofactor is copied
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx);
-
-/** Sets the name of a EC_GROUP object
- * \param group EC_GROUP object
- * \param nid NID of the curve name OID
- */
-void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
-
-/** Returns the curve name of a EC_GROUP object
- * \param group EC_GROUP object
- * \return NID of the curve name OID or 0 if not set.
- */
-int EC_GROUP_get_curve_name(const EC_GROUP *group);
-
-void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
-int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
-
-void EC_GROUP_set_point_conversion_form(EC_GROUP *group, point_conversion_form_t form);
-point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
-
-unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
-size_t EC_GROUP_get_seed_len(const EC_GROUP *);
-size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
-
-/** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
- * \param group EC_GROUP object
- * \param p BIGNUM with the prime number
- * \param a BIGNUM with parameter a of the equation
- * \param b BIGNUM with parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
-
-/** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
- * \param group EC_GROUP object
- * \param p BIGNUM for the prime number
- * \param a BIGNUM for parameter a of the equation
- * \param b BIGNUM for parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx);
-
-#ifndef OPENSSL_NO_EC2M
-/** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
- * \param group EC_GROUP object
- * \param p BIGNUM with the polynomial defining the underlying field
- * \param a BIGNUM with parameter a of the equation
- * \param b BIGNUM with parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
-
-/** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
- * \param group EC_GROUP object
- * \param p BIGNUM for the polynomial defining the underlying field
- * \param a BIGNUM for parameter a of the equation
- * \param b BIGNUM for parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx);
-#endif
-/** Returns the number of bits needed to represent a field element
- * \param group EC_GROUP object
- * \return number of bits needed to represent a field element
- */
-int EC_GROUP_get_degree(const EC_GROUP *group);
-
-/** Checks whether the parameter in the EC_GROUP define a valid ec group
- * \param group EC_GROUP object
- * \param ctx BN_CTX object (optional)
- * \return 1 if group is a valid ec group and 0 otherwise
- */
-int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
-
-/** Checks whether the discriminant of the elliptic curve is zero or not
- * \param group EC_GROUP object
- * \param ctx BN_CTX object (optional)
- * \return 1 if the discriminant is not zero and 0 otherwise
- */
-int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
-
-/** Compares two EC_GROUP objects
- * \param a first EC_GROUP object
- * \param b second EC_GROUP object
- * \param ctx BN_CTX object (optional)
- * \return 0 if both groups are equal and 1 otherwise
- */
-int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
-
-/* EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*()
- * after choosing an appropriate EC_METHOD */
-
-/** Creates a new EC_GROUP object with the specified parameters defined
- * over GFp (defined by the equation y^2 = x^3 + a*x + b)
- * \param p BIGNUM with the prime number
- * \param a BIGNUM with the parameter a of the equation
- * \param b BIGNUM with the parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return newly created EC_GROUP object with the specified parameters
- */
-EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
-#ifndef OPENSSL_NO_EC2M
-/** Creates a new EC_GROUP object with the specified parameters defined
- * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
- * \param p BIGNUM with the polynomial defining the underlying field
- * \param a BIGNUM with the parameter a of the equation
- * \param b BIGNUM with the parameter b of the equation
- * \param ctx BN_CTX object (optional)
- * \return newly created EC_GROUP object with the specified parameters
- */
-EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
-#endif
-/** Creates a EC_GROUP object with a curve specified by a NID
- * \param nid NID of the OID of the curve name
- * \return newly created EC_GROUP object with specified curve or NULL
- * if an error occurred
- */
-EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
-
-
-/********************************************************************/
-/* handling of internal curves */
-/********************************************************************/
-
-typedef struct {
- int nid;
- const char *comment;
- } EC_builtin_curve;
-
-/* EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number
- * of all available curves or zero if a error occurred.
- * In case r ist not zero nitems EC_builtin_curve structures
- * are filled with the data of the first nitems internal groups */
-size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
-
-const char *EC_curve_nid2nist(int nid);
-int EC_curve_nist2nid(const char *name);
-
-/********************************************************************/
-/* EC_POINT functions */
-/********************************************************************/
-
-/** Creates a new EC_POINT object for the specified EC_GROUP
- * \param group EC_GROUP the underlying EC_GROUP object
- * \return newly created EC_POINT object or NULL if an error occurred
- */
-EC_POINT *EC_POINT_new(const EC_GROUP *group);
-
-/** Frees a EC_POINT object
- * \param point EC_POINT object to be freed
- */
-void EC_POINT_free(EC_POINT *point);
-
-/** Clears and frees a EC_POINT object
- * \param point EC_POINT object to be cleared and freed
- */
-void EC_POINT_clear_free(EC_POINT *point);
-
-/** Copies EC_POINT object
- * \param dst destination EC_POINT object
- * \param src source EC_POINT object
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
-
-/** Creates a new EC_POINT object and copies the content of the supplied
- * EC_POINT
- * \param src source EC_POINT object
- * \param group underlying the EC_GROUP object
- * \return newly created EC_POINT object or NULL if an error occurred
- */
-EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
-
-/** Returns the EC_METHOD used in EC_POINT object
- * \param point EC_POINT object
- * \return the EC_METHOD used
- */
-const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
-
-/** Sets a point to infinity (neutral element)
- * \param group underlying EC_GROUP object
- * \param point EC_POINT to set to infinity
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
-
-/** Sets the jacobian projective coordinates of a EC_POINT over GFp
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM with the x-coordinate
- * \param y BIGNUM with the y-coordinate
- * \param z BIGNUM with the z-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
- const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx);
-
-/** Gets the jacobian projective coordinates of a EC_POINT over GFp
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM for the x-coordinate
- * \param y BIGNUM for the y-coordinate
- * \param z BIGNUM for the z-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
- const EC_POINT *p, BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx);
-
-/** Sets the affine coordinates of a EC_POINT over GFp
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM with the x-coordinate
- * \param y BIGNUM with the y-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
- const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
-
-/** Gets the affine coordinates of a EC_POINT over GFp
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM for the x-coordinate
- * \param y BIGNUM for the y-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
- const EC_POINT *p, BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
-
-/** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM with x-coordinate
- * \param y_bit integer with the y-Bit (either 0 or 1)
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
- const BIGNUM *x, int y_bit, BN_CTX *ctx);
-#ifndef OPENSSL_NO_EC2M
-/** Sets the affine coordinates of a EC_POINT over GF2m
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM with the x-coordinate
- * \param y BIGNUM with the y-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
- const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
-
-/** Gets the affine coordinates of a EC_POINT over GF2m
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM for the x-coordinate
- * \param y BIGNUM for the y-coordinate
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
- const EC_POINT *p, BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
-
-/** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param x BIGNUM with x-coordinate
- * \param y_bit integer with the y-Bit (either 0 or 1)
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
- const BIGNUM *x, int y_bit, BN_CTX *ctx);
-#endif
-/** Encodes a EC_POINT object to a octet string
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param form point conversion form
- * \param buf memory buffer for the result. If NULL the function returns
- * required buffer size.
- * \param len length of the memory buffer
- * \param ctx BN_CTX object (optional)
- * \return the length of the encoded octet string or 0 if an error occurred
- */
-size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
- point_conversion_form_t form,
- unsigned char *buf, size_t len, BN_CTX *ctx);
-
-/** Decodes a EC_POINT from a octet string
- * \param group underlying EC_GROUP object
- * \param p EC_POINT object
- * \param buf memory buffer with the encoded ec point
- * \param len length of the encoded ec point
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
- const unsigned char *buf, size_t len, BN_CTX *ctx);
-
-/* other interfaces to point2oct/oct2point: */
-BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
- point_conversion_form_t form, BIGNUM *, BN_CTX *);
-EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
- EC_POINT *, BN_CTX *);
-char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
- point_conversion_form_t form, BN_CTX *);
-EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
- EC_POINT *, BN_CTX *);
-
-
-/********************************************************************/
-/* functions for doing EC_POINT arithmetic */
-/********************************************************************/
-
-/** Computes the sum of two EC_POINT
- * \param group underlying EC_GROUP object
- * \param r EC_POINT object for the result (r = a + b)
- * \param a EC_POINT object with the first summand
- * \param b EC_POINT object with the second summand
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx);
-
-/** Computes the double of a EC_POINT
- * \param group underlying EC_GROUP object
- * \param r EC_POINT object for the result (r = 2 * a)
- * \param a EC_POINT object
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx);
-
-/** Computes the inverse of a EC_POINT
- * \param group underlying EC_GROUP object
- * \param a EC_POINT object to be inverted (it's used for the result as well)
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
-
-/** Checks whether the point is the neutral element of the group
- * \param group the underlying EC_GROUP object
- * \param p EC_POINT object
- * \return 1 if the point is the neutral element and 0 otherwise
- */
-int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
-
-/** Checks whether the point is on the curve
- * \param group underlying EC_GROUP object
- * \param point EC_POINT object to check
- * \param ctx BN_CTX object (optional)
- * \return 1 if point if on the curve and 0 otherwise
- */
-int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx);
-
-/** Compares two EC_POINTs
- * \param group underlying EC_GROUP object
- * \param a first EC_POINT object
- * \param b second EC_POINT object
- * \param ctx BN_CTX object (optional)
- * \return 0 if both points are equal and a value != 0 otherwise
- */
-int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx);
-
-int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
-int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx);
-
-/** Computes r = generator * n sum_{i=0}^num p[i] * m[i]
- * \param group underlying EC_GROUP object
- * \param r EC_POINT object for the result
- * \param n BIGNUM with the multiplier for the group generator (optional)
- * \param num number futher summands
- * \param p array of size num of EC_POINT objects
- * \param m array of size num of BIGNUM objects
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, size_t num, const EC_POINT *p[], const BIGNUM *m[], BN_CTX *ctx);
-
-/** Computes r = generator * n + q * m
- * \param group underlying EC_GROUP object
- * \param r EC_POINT object for the result
- * \param n BIGNUM with the multiplier for the group generator (optional)
- * \param q EC_POINT object with the first factor of the second summand
- * \param m BIGNUM with the second factor of the second summand
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
-
-/** Stores multiples of generator for faster point multiplication
- * \param group EC_GROUP object
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occured
- */
-int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
-
-/** Reports whether a precomputation has been done
- * \param group EC_GROUP object
- * \return 1 if a pre-computation has been done and 0 otherwise
- */
-int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
-
-
-/********************************************************************/
-/* ASN1 stuff */
-/********************************************************************/
-
-/* EC_GROUP_get_basis_type() returns the NID of the basis type
- * used to represent the field elements */
-int EC_GROUP_get_basis_type(const EC_GROUP *);
-#ifndef OPENSSL_NO_EC2M
-int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
-int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
- unsigned int *k2, unsigned int *k3);
-#endif
-
-#define OPENSSL_EC_NAMED_CURVE 0x001
-
-typedef struct ecpk_parameters_st ECPKPARAMETERS;
-
-EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
-int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
-
-#define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
-#define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
-#define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
- (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
-#define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
- (unsigned char *)(x))
-
-#ifndef OPENSSL_NO_BIO
-int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
-#endif
-int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
-
-
-/********************************************************************/
-/* EC_KEY functions */
-/********************************************************************/
-
-typedef struct ec_key_st EC_KEY;
-typedef struct ec_key_method_st EC_KEY_METHOD;
-
-/* some values for the encoding_flag */
-#define EC_PKEY_NO_PARAMETERS 0x001
-#define EC_PKEY_NO_PUBKEY 0x002
-
-/* some values for the flags field */
-#define EC_FLAG_NON_FIPS_ALLOW 0x1
-#define EC_FLAG_FIPS_CHECKED 0x2
-#define EC_FLAG_COFACTOR_ECDH 0x1000
-
-/** Creates a new EC_KEY object.
- * \return EC_KEY object or NULL if an error occurred.
- */
-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);
-
-/** Creates a new EC_KEY object using a named curve as underlying
- * EC_GROUP object.
- * \param nid NID of the named curve.
- * \return EC_KEY object or NULL if an error occurred.
- */
-EC_KEY *EC_KEY_new_by_curve_name(int nid);
-
-/** Frees a EC_KEY object.
- * \param key EC_KEY object to be freed.
- */
-void EC_KEY_free(EC_KEY *key);
-
-/** Copies a EC_KEY object.
- * \param dst destination EC_KEY object
- * \param src src EC_KEY object
- * \return dst or NULL if an error occurred.
- */
-EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
-
-/** Creates a new EC_KEY object and copies the content from src to it.
- * \param src the source EC_KEY object
- * \return newly created EC_KEY object or NULL if an error occurred.
- */
-EC_KEY *EC_KEY_dup(const EC_KEY *src);
-
-/** Increases the internal reference count of a EC_KEY object.
- * \param key EC_KEY object
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_up_ref(EC_KEY *key);
-
-/** Returns the EC_GROUP object of a EC_KEY object
- * \param key EC_KEY object
- * \return the EC_GROUP object (possibly NULL).
- */
-const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
-
-/** Sets the EC_GROUP of a EC_KEY object.
- * \param key EC_KEY object
- * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
- * object will use an own copy of the EC_GROUP).
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
-
-/** Returns the private key of a EC_KEY object.
- * \param key EC_KEY object
- * \return a BIGNUM with the private key (possibly NULL).
- */
-const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
-
-/** Sets the private key of a EC_KEY object.
- * \param key EC_KEY object
- * \param prv BIGNUM with the private key (note: the EC_KEY object
- * will use an own copy of the BIGNUM).
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
-
-/** Returns the public key of a EC_KEY object.
- * \param key the EC_KEY object
- * \return a EC_POINT object with the public key (possibly NULL)
- */
-const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
-
-/** Sets the public key of a EC_KEY object.
- * \param key EC_KEY object
- * \param pub EC_POINT object with the public key (note: the EC_KEY object
- * will use an own copy of the EC_POINT object).
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
-
-unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
-void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
-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);
-/* functions to set/get method specific data */
-void *EC_KEY_get_key_method_data(EC_KEY *key,
- void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *));
-/** Sets the key method data of an EC_KEY object, if none has yet been set.
- * \param key EC_KEY object
- * \param data opaque data to install.
- * \param dup_func a function that duplicates |data|.
- * \param free_func a function that frees |data|.
- * \param clear_free_func a function that wipes and frees |data|.
- * \return the previously set data pointer, or NULL if |data| was inserted.
- */
-void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
- void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *));
-/* wrapper functions for the underlying EC_GROUP object */
-void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
-
-/** Creates a table of pre-computed multiples of the generator to
- * accelerate further EC_KEY operations.
- * \param key EC_KEY object
- * \param ctx BN_CTX object (optional)
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
-
-/** Creates a new ec private (and optional a new public) key.
- * \param key EC_KEY object
- * \return 1 on success and 0 if an error occurred.
- */
-int EC_KEY_generate_key(EC_KEY *key);
-
-/** Verifies that a private and/or public key is valid.
- * \param key the EC_KEY object
- * \return 1 on success and 0 otherwise.
- */
-int EC_KEY_check_key(const EC_KEY *key);
-
-/** Sets a public key from affine coordindates performing
- * neccessary NIST PKV tests.
- * \param key the EC_KEY object
- * \param x public key x coordinate
- * \param y public key y coordinate
- * \return 1 on success and 0 otherwise.
- */
-int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y);
-
-
-/********************************************************************/
-/* de- and encoding functions for SEC1 ECPrivateKey */
-/********************************************************************/
-
-/** Decodes a private key from a memory buffer.
- * \param key a pointer to a EC_KEY object which should be used (or NULL)
- * \param in pointer to memory with the DER encoded private key
- * \param len length of the DER encoded private key
- * \return the decoded private key or NULL if an error occurred.
- */
-EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
-
-/** Encodes a private key object and stores the result in a buffer.
- * \param key the EC_KEY object to encode
- * \param out the buffer for the result (if NULL the function returns number
- * of bytes needed).
- * \return 1 on success and 0 if an error occurred.
- */
-int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
-
-
-/********************************************************************/
-/* de- and encoding functions for EC parameters */
-/********************************************************************/
-
-/** Decodes ec parameter from a memory buffer.
- * \param key a pointer to a EC_KEY object which should be used (or NULL)
- * \param in pointer to memory with the DER encoded ec parameters
- * \param len length of the DER encoded ec parameters
- * \return a EC_KEY object with the decoded parameters or NULL if an error
- * occurred.
- */
-EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
-
-/** Encodes ec parameter and stores the result in a buffer.
- * \param key the EC_KEY object with ec paramters to encode
- * \param out the buffer for the result (if NULL the function returns number
- * of bytes needed).
- * \return 1 on success and 0 if an error occurred.
- */
-int i2d_ECParameters(EC_KEY *key, unsigned char **out);
-
-
-/********************************************************************/
-/* de- and encoding functions for EC public key */
-/* (octet string, not DER -- hence 'o2i' and 'i2o') */
-/********************************************************************/
-
-/** Decodes a ec public key from a octet string.
- * \param key a pointer to a EC_KEY object which should be used
- * \param in memory buffer with the encoded public key
- * \param len length of the encoded public key
- * \return EC_KEY object with decoded public key or NULL if an error
- * occurred.
- */
-EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len);
-
-/** Encodes a ec public key in an octet string.
- * \param key the EC_KEY object with the public key
- * \param out the buffer for the result (if NULL the function returns number
- * of bytes needed).
- * \return 1 on success and 0 if an error occurred
- */
-int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out);
-
-#ifndef OPENSSL_NO_BIO
-/** Prints out the ec parameters on human readable form.
- * \param bp BIO object to which the information is printed
- * \param key EC_KEY object
- * \return 1 on success and 0 if an error occurred
- */
-int ECParameters_print(BIO *bp, const EC_KEY *key);
-
-/** Prints out the contents of a EC_KEY object
- * \param bp BIO object to which the information is printed
- * \param key EC_KEY object
- * \param off line offset
- * \return 1 on success and 0 if an error occurred
- */
-int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
-
-#endif
-/** Prints out the ec parameters on human readable form.
- * \param fp file descriptor to which the information is printed
- * \param key EC_KEY object
- * \return 1 on success and 0 if an error occurred
- */
-int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
-
-/** Prints out the contents of a EC_KEY object
- * \param fp file descriptor to which the information is printed
- * \param key EC_KEY object
- * \param off line offset
- * \return 1 on success and 0 if an error occurred
- */
-int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
-
-#define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
- CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
-int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
-void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
-
-const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
-const EC_KEY_METHOD *EC_KEY_get_default_method(void);
-void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
-const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
-int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
-EC_KEY *EC_KEY_new_method(ENGINE *engine);
-EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
-void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
-void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
- int (*init)(EC_KEY *key),
- void (*finish)(EC_KEY *key),
- int (*copy)(EC_KEY *dest, const EC_KEY *src),
- int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
- int (*set_private)(EC_KEY *key, const BIGNUM *priv_key),
- int (*set_public)(EC_KEY *key, const EC_POINT *pub_key));
-void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
- int (*keygen)(EC_KEY *key));
-void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
- int (*ckey)(void *out, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
- void *(*KDF) (const void *in, size_t inlen, void *out, size_t *outlen)));
-void EC_KEY_METHOD_get_init(const EC_KEY_METHOD *meth,
- int (**pinit)(EC_KEY *key),
- void (**pfinish)(EC_KEY *key),
- int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
- int (**pset_group)(EC_KEY *key, const EC_GROUP *grp),
- int (**pset_private)(EC_KEY *key, const BIGNUM *priv_key),
- int (**pset_public)(EC_KEY *key, const EC_POINT *pub_key));
-void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth,
- int (**pkeygen)(EC_KEY *key));
-void EC_KEY_METHOD_get_compute_key(const EC_KEY_METHOD *meth,
- int (**pck)(void *out, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
- void *(*KDF) (const void *in, size_t inlen, void *out, size_t *outlen)));
-
-EC_KEY *ECParameters_dup(EC_KEY *key);
-
-#ifndef __cplusplus
-#if defined(__SUNPRO_C)
-# if __SUNPRO_C >= 0x520
-# pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
-# endif
-# endif
-#endif
-
-#define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
- EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL)
-
-#define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
- EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL)
-
-#define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL)
-
-#define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL)
-
-#define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL)
-
-#define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL)
-
-#define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)(md))
-
-#define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)(pmd))
-
-#define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL)
-
-#define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, \
- (void *)(plen))
-
-#define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)(p))
-
-#define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
- EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
- EVP_PKEY_OP_DERIVE, \
- EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)(p))
-
-/* SM2 will skip the operation check so no need to pass operation here */
-#define EVP_PKEY_CTX_set1_id(ctx, id, id_len) \
- EVP_PKEY_CTX_ctrl(ctx, -1, -1, \
- EVP_PKEY_CTRL_SET1_ID, (int)id_len, (void*)(id))
-
-#define EVP_PKEY_CTX_get1_id(ctx, id) \
- EVP_PKEY_CTX_ctrl(ctx, -1, -1, \
- EVP_PKEY_CTRL_GET1_ID, 0, (void*)(id))
-
-#define EVP_PKEY_CTX_get1_id_len(ctx, id_len) \
- EVP_PKEY_CTX_ctrl(ctx, -1, -1, \
- EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)(id_len))
-
-#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1)
-#define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2)
-#define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3)
-#define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4)
-#define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5)
-#define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6)
-#define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7)
-#define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8)
-#define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9)
-#define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10)
-#define EVP_PKEY_CTRL_SET1_ID (EVP_PKEY_ALG_CTRL + 11)
-#define EVP_PKEY_CTRL_GET1_ID (EVP_PKEY_ALG_CTRL + 12)
-#define EVP_PKEY_CTRL_GET1_ID_LEN (EVP_PKEY_ALG_CTRL + 13)
-
-/* KDF types */
-#define EVP_PKEY_ECDH_KDF_NONE 1
-#define EVP_PKEY_ECDH_KDF_X9_63 2
-
-/* BEGIN ERROR CODES */
-/* The following lines are auto generated by the script mkerr.pl. Any changes
- * made after this point may be overwritten when the script is next run.
- */
-void ERR_load_EC_strings(void);
-
-/* Error codes for the EC functions. */
-
-/* Function codes. */
-#define EC_F_BN_TO_FELEM 224
-#define EC_F_COMPUTE_WNAF 143
-#define EC_F_D2I_ECPARAMETERS 144
-#define EC_F_D2I_ECPKPARAMETERS 145
-#define EC_F_D2I_ECPRIVATEKEY 146
-#define EC_F_DO_EC_KEY_PRINT 221
-#define EC_F_ECKEY_PARAM2TYPE 223
-#define EC_F_ECKEY_PARAM_DECODE 212
-#define EC_F_ECKEY_PRIV_DECODE 213
-#define EC_F_ECKEY_PRIV_ENCODE 214
-#define EC_F_ECKEY_PUB_DECODE 215
-#define EC_F_ECKEY_PUB_ENCODE 216
-#define EC_F_ECKEY_TYPE2PARAM 220
-#define EC_F_ECPARAMETERS_PRINT 147
-#define EC_F_ECPARAMETERS_PRINT_FP 148
-#define EC_F_ECPKPARAMETERS_PRINT 149
-#define EC_F_ECPKPARAMETERS_PRINT_FP 150
-#define EC_F_ECP_NIST_MOD_192 203
-#define EC_F_ECP_NIST_MOD_224 204
-#define EC_F_ECP_NIST_MOD_256 205
-#define EC_F_ECP_NIST_MOD_521 206
-#define EC_F_ECP_NISTZ256_GET_AFFINE 240
-#define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE 243
-#define EC_F_ECP_NISTZ256_POINTS_MUL 241
-#define EC_F_ECP_NISTZ256_PRE_COMP_NEW 244
-#define EC_F_ECP_NISTZ256_SET_WORDS 245
-#define EC_F_ECP_NISTZ256_WINDOWED_MUL 242
-#define EC_F_EC_ASN1_GROUP2CURVE 153
-#define EC_F_EC_ASN1_GROUP2FIELDID 154
-#define EC_F_EC_ASN1_GROUP2PARAMETERS 155
-#define EC_F_EC_ASN1_GROUP2PKPARAMETERS 156
-#define EC_F_EC_ASN1_PARAMETERS2GROUP 157
-#define EC_F_EC_ASN1_PKPARAMETERS2GROUP 158
-#define EC_F_EC_EX_DATA_SET_DATA 211
-#define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY 208
-#define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT 159
-#define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE 195
-#define EC_F_EC_GF2M_SIMPLE_OCT2POINT 160
-#define EC_F_EC_GF2M_SIMPLE_POINT2OCT 161
-#define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
-#define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
-#define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES 164
-#define EC_F_EC_GFP_MONT_FIELD_DECODE 133
-#define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
-#define EC_F_EC_GFP_MONT_FIELD_MUL 131
-#define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE 209
-#define EC_F_EC_GFP_MONT_FIELD_SQR 132
-#define EC_F_EC_GFP_MONT_GROUP_SET_CURVE 189
-#define EC_F_EC_GFP_MONT_GROUP_SET_CURVE_GFP 135
-#define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE 225
-#define EC_F_EC_GFP_NISTP224_POINTS_MUL 228
-#define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
-#define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE 230
-#define EC_F_EC_GFP_NISTP256_POINTS_MUL 231
-#define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
-#define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE 233
-#define EC_F_EC_GFP_NISTP521_POINTS_MUL 234
-#define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
-#define EC_F_EC_GFP_NIST_FIELD_MUL 200
-#define EC_F_EC_GFP_NIST_FIELD_SQR 201
-#define EC_F_EC_GFP_NIST_GROUP_SET_CURVE 202
-#define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 165
-#define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE 166
-#define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP 100
-#define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 101
-#define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
-#define EC_F_EC_GFP_SIMPLE_OCT2POINT 103
-#define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
-#define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
-#define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES 167
-#define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
-#define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES 168
-#define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
-#define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES 169
-#define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
-#define EC_F_EC_GROUP_CHECK 170
-#define EC_F_EC_GROUP_CHECK_DISCRIMINANT 171
-#define EC_F_EC_GROUP_COPY 106
-#define EC_F_EC_GROUP_GET0_GENERATOR 139
-#define EC_F_EC_GROUP_GET_COFACTOR 140
-#define EC_F_EC_GROUP_GET_CURVE_GF2M 172
-#define EC_F_EC_GROUP_GET_CURVE_GFP 130
-#define EC_F_EC_GROUP_GET_DEGREE 173
-#define EC_F_EC_GROUP_GET_ORDER 141
-#define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS 193
-#define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS 194
-#define EC_F_EC_GROUP_NEW 108
-#define EC_F_EC_GROUP_NEW_BY_CURVE_NAME 174
-#define EC_F_EC_GROUP_NEW_FROM_DATA 175
-#define EC_F_EC_GROUP_PRECOMPUTE_MULT 142
-#define EC_F_EC_GROUP_SET_CURVE_GF2M 176
-#define EC_F_EC_GROUP_SET_CURVE_GFP 109
-#define EC_F_EC_GROUP_SET_EXTRA_DATA 110
-#define EC_F_EC_GROUP_SET_GENERATOR 111
-#define EC_F_EC_KEY_CHECK_KEY 177
-#define EC_F_EC_KEY_COPY 178
-#define EC_F_EC_KEY_GENERATE_KEY 179
-#define EC_F_EC_KEY_NEW 182
-#define EC_F_EC_KEY_PRINT 180
-#define EC_F_EC_KEY_PRINT_FP 181
-#define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES 229
-#define EC_F_EC_POINTS_MAKE_AFFINE 136
-#define EC_F_EC_POINT_ADD 112
-#define EC_F_EC_POINT_CMP 113
-#define EC_F_EC_POINT_COPY 114
-#define EC_F_EC_POINT_DBL 115
-#define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M 183
-#define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
-#define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
-#define EC_F_EC_POINT_INVERT 210
-#define EC_F_EC_POINT_IS_AT_INFINITY 118
-#define EC_F_EC_POINT_IS_ON_CURVE 119
-#define EC_F_EC_POINT_MAKE_AFFINE 120
-#define EC_F_EC_POINT_MUL 184
-#define EC_F_EC_POINT_NEW 121
-#define EC_F_EC_POINT_OCT2POINT 122
-#define EC_F_EC_POINT_POINT2OCT 123
-#define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M 185
-#define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
-#define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M 186
-#define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
-#define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
-#define EC_F_EC_POINT_SET_TO_INFINITY 127
-#define EC_F_EC_PRE_COMP_DUP 207
-#define EC_F_EC_PRE_COMP_NEW 196
-#define EC_F_EC_WNAF_MUL 187
-#define EC_F_EC_WNAF_PRECOMPUTE_MULT 188
-#define EC_F_I2D_ECPARAMETERS 190
-#define EC_F_I2D_ECPKPARAMETERS 191
-#define EC_F_I2D_ECPRIVATEKEY 192
-#define EC_F_I2O_ECPUBLICKEY 151
-#define EC_F_NISTP224_PRE_COMP_NEW 227
-#define EC_F_NISTP256_PRE_COMP_NEW 236
-#define EC_F_NISTP521_PRE_COMP_NEW 237
-#define EC_F_O2I_ECPUBLICKEY 152
-#define EC_F_OLD_EC_PRIV_DECODE 222
-#define EC_F_PKEY_EC_CTRL 197
-#define EC_F_PKEY_EC_CTRL_STR 198
-#define EC_F_PKEY_EC_DERIVE 217
-#define EC_F_PKEY_EC_KEYGEN 199
-#define EC_F_PKEY_EC_PARAMGEN 219
-#define EC_F_PKEY_EC_SIGN 218
-
-/* Reason codes. */
-#define EC_R_ASN1_ERROR 115
-#define EC_R_ASN1_UNKNOWN_FIELD 116
-#define EC_R_BIGNUM_OUT_OF_RANGE 144
-#define EC_R_BUFFER_TOO_SMALL 100
-#define EC_R_COORDINATES_OUT_OF_RANGE 146
-#define EC_R_D2I_ECPKPARAMETERS_FAILURE 117
-#define EC_R_DECODE_ERROR 142
-#define EC_R_DISCRIMINANT_IS_ZERO 118
-#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 119
-#define EC_R_FIELD_TOO_LARGE 143
-#define EC_R_GF2M_NOT_SUPPORTED 147
-#define EC_R_GROUP2PKPARAMETERS_FAILURE 120
-#define EC_R_I2D_ECPKPARAMETERS_FAILURE 121
-#define EC_R_INCOMPATIBLE_OBJECTS 101
-#define EC_R_INVALID_ARGUMENT 112
-#define EC_R_INVALID_COMPRESSED_POINT 110
-#define EC_R_INVALID_COMPRESSION_BIT 109
-#define EC_R_INVALID_CURVE 141
-#define EC_R_INVALID_DIGEST 151
-#define EC_R_INVALID_DIGEST_TYPE 138
-#define EC_R_INVALID_ENCODING 102
-#define EC_R_INVALID_FIELD 103
-#define EC_R_INVALID_FORM 104
-#define EC_R_INVALID_GROUP_ORDER 122
-#define EC_R_INVALID_PENTANOMIAL_BASIS 132
-#define EC_R_INVALID_PRIVATE_KEY 123
-#define EC_R_INVALID_TRINOMIAL_BASIS 137
-#define EC_R_KDF_PARAMETER_ERROR 148
-#define EC_R_KEYS_NOT_SET 140
-#define EC_R_MISSING_PARAMETERS 124
-#define EC_R_MISSING_PRIVATE_KEY 125
-#define EC_R_NOT_A_NIST_PRIME 135
-#define EC_R_NOT_A_SUPPORTED_NIST_PRIME 136
-#define EC_R_NOT_IMPLEMENTED 126
-#define EC_R_NOT_INITIALIZED 111
-#define EC_R_NO_FIELD_MOD 133
-#define EC_R_NO_PARAMETERS_SET 139
-#define EC_R_PASSED_NULL_PARAMETER 134
-#define EC_R_PEER_KEY_ERROR 149
-#define EC_R_PKPARAMETERS2GROUP_FAILURE 127
-#define EC_R_POINT_AT_INFINITY 106
-#define EC_R_POINT_IS_NOT_ON_CURVE 107
-#define EC_R_SHARED_INFO_ERROR 150
-#define EC_R_SLOT_FULL 108
-#define EC_R_UNDEFINED_GENERATOR 113
-#define EC_R_UNDEFINED_ORDER 128
-#define EC_R_UNKNOWN_COFACTOR 164
-#define EC_R_UNKNOWN_GROUP 129
-#define EC_R_UNKNOWN_ORDER 114
-#define EC_R_UNSUPPORTED_FIELD 131
-#define EC_R_WRONG_CURVE_PARAMETERS 145
-#define EC_R_WRONG_ORDER 130
-
-#ifdef __cplusplus
-}
-#endif
-#endif