diff options
Diffstat (limited to 'NorthstarDLL/include/openssl/ec.h')
| -rw-r--r-- | NorthstarDLL/include/openssl/ec.h | 3132 |
1 files changed, 1566 insertions, 1566 deletions
diff --git a/NorthstarDLL/include/openssl/ec.h b/NorthstarDLL/include/openssl/ec.h index f59b4f92..584b19ad 100644 --- a/NorthstarDLL/include/openssl/ec.h +++ b/NorthstarDLL/include/openssl/ec.h @@ -1,1566 +1,1566 @@ -/* - * Copyright 2002-2021 The OpenSSL Project Authors. All Rights Reserved. - * Copyright (c) 2002, Oracle and/or its affiliates. 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 - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html - */ - -#ifndef OPENSSL_EC_H -# define OPENSSL_EC_H -# pragma once - -# include <openssl/macros.h> -# ifndef OPENSSL_NO_DEPRECATED_3_0 -# define HEADER_EC_H -# endif - -# include <openssl/opensslconf.h> -# include <openssl/types.h> - -# ifdef __cplusplus -extern "C" { -# endif - -/* Values for EVP_PKEY_CTX_set_ec_param_enc() */ -# define OPENSSL_EC_EXPLICIT_CURVE 0x000 -# define OPENSSL_EC_NAMED_CURVE 0x001 - -int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid); -int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc); -int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode); -int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx); - -int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf); -int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx); - -int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md); -int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md); - -int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len); -int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len); - -int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, - int len); -# ifndef OPENSSL_NO_DEPRECATED_3_0 -OSSL_DEPRECATEDIN_3_0 -int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm); -# endif - -# 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) - -/* KDF types */ -# define EVP_PKEY_ECDH_KDF_NONE 1 -# define EVP_PKEY_ECDH_KDF_X9_63 2 -/* - * The old name for EVP_PKEY_ECDH_KDF_X9_63 - * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62, - * it is actually specified in ANSI X9.63. - * This identifier is retained for backwards compatibility - */ -# define EVP_PKEY_ECDH_KDF_X9_62 EVP_PKEY_ECDH_KDF_X9_63 - -/** 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 0x04 */ - 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; - -const char *OSSL_EC_curve_nid2name(int nid); - -# ifndef OPENSSL_NO_EC -# include <openssl/asn1.h> -# include <openssl/symhacks.h> -# ifndef OPENSSL_NO_DEPRECATED_1_1_0 -# include <openssl/bn.h> -# endif -# include <openssl/ecerr.h> - -# ifndef OPENSSL_ECC_MAX_FIELD_BITS -# define OPENSSL_ECC_MAX_FIELD_BITS 661 -# endif - -# include <openssl/params.h> -# ifndef OPENSSL_NO_DEPRECATED_3_0 -typedef struct ec_method_st EC_METHOD; -# endif -typedef struct ec_group_st EC_GROUP; -typedef struct ec_point_st EC_POINT; -typedef struct ecpk_parameters_st ECPKPARAMETERS; -typedef struct ec_parameters_st ECPARAMETERS; - -/********************************************************************/ -/* EC_METHODs for curves over GF(p) */ -/********************************************************************/ - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Returns the basic GFp ec methods which provides the basis for the - * optimized methods. - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_simple_method(void); - -/** Returns GFp methods using montgomery multiplication. - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_mont_method(void); - -/** Returns GFp methods using optimized methods for NIST recommended curves - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 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 - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp224_method(void); - -/** Returns 64-bit optimized methods for nistp256 - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp256_method(void); - -/** Returns 64-bit optimized methods for nistp521 - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp521_method(void); -# endif /* OPENSSL_NO_EC_NISTP_64_GCC_128 */ - -# ifndef OPENSSL_NO_EC2M -/********************************************************************/ -/* EC_METHOD for curves over GF(2^m) */ -/********************************************************************/ - -/** Returns the basic GF2m ec method - * \return EC_METHOD object - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth); - -/** Clears and frees a EC_GROUP object - * \param group EC_GROUP object to be cleared and freed. - */ -OSSL_DEPRECATEDIN_3_0 void EC_GROUP_clear_free(EC_GROUP *group); - -/** Returns the EC_METHOD of the EC_GROUP object. - * \param group EC_GROUP object - * \return EC_METHOD used in this EC_GROUP object. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 int EC_METHOD_get_field_type(const EC_METHOD *meth); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** Frees a EC_GROUP object - * \param group EC_GROUP object to be freed. - */ -void EC_GROUP_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 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); - -/** Sets the generator and its 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 occurred - */ -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); - -/** Returns the montgomery data for order(Generator) - * \param group EC_GROUP object - * \return the currently used montgomery data (possibly NULL). -*/ -BN_MONT_CTX *EC_GROUP_get_mont_data(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 unused - * \return 1 on success and 0 if an error occurred - */ -int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx); - -/** Gets the order of an EC_GROUP - * \param group EC_GROUP object - * \return the group order - */ -const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group); - -/** Gets the number of bits of the order of an EC_GROUP - * \param group EC_GROUP object - * \return number of bits of group order. - */ -int EC_GROUP_order_bits(const EC_GROUP *group); - -/** Gets the cofactor of a EC_GROUP - * \param group EC_GROUP object - * \param cofactor BIGNUM to which the cofactor is copied - * \param ctx unused - * \return 1 on success and 0 if an error occurred - */ -int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, - BN_CTX *ctx); - -/** Gets the cofactor of an EC_GROUP - * \param group EC_GROUP object - * \return the group cofactor - */ -const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group); - -/** 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); - -/** Gets the field of an EC_GROUP - * \param group EC_GROUP object - * \return the group field - */ -const BIGNUM *EC_GROUP_get0_field(const EC_GROUP *group); - -/** Returns the field type of the EC_GROUP. - * \param group EC_GROUP object - * \return NID of the underlying field type OID. - */ -int EC_GROUP_get_field_type(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 parameters of an ec curve defined by y^2 = x^3 + a*x + b (for GFp) - * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -int EC_GROUP_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, - const BIGNUM *b, BN_CTX *ctx); - -/** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp) - * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -int EC_GROUP_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, - BN_CTX *ctx); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GFp(EC_GROUP *group, - const BIGNUM *p, - const BIGNUM *a, - const BIGNUM *b, - BN_CTX *ctx); - -/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 an ec curve. Synonym for EC_GROUP_set_curve - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, - const BIGNUM *p, - const BIGNUM *a, - const BIGNUM *b, - BN_CTX *ctx); - -/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve - * \param group EC_GROUP object - * \param p BIGNUM with the prime number (GFp) or the polynomial - * defining the underlying field (GF2m) - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, - BIGNUM *p, - BIGNUM *a, BIGNUM *b, - BN_CTX *ctx); -# endif /* OPENSSL_NO_EC2M */ -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** 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 the groups are equal, 1 if not, or -1 on error - */ -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 parameters. - * The parameters may be explicit or a named curve, - * \param params A list of parameters describing the group. - * \param libctx The associated library context or NULL for the default - * context - * \param propq A property query string - * \return newly created EC_GROUP object with specified parameters or NULL - * if an error occurred - */ -EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[], - OSSL_LIB_CTX *libctx, const char *propq); - -/** - * Creates a EC_GROUP object with a curve specified by a NID - * \param libctx The associated library context or NULL for the default - * context - * \param propq A property query string - * \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_ex(OSSL_LIB_CTX *libctx, const char *propq, - int nid); - -/** - * Creates a EC_GROUP object with a curve specified by a NID. Same as - * EC_GROUP_new_by_curve_name_ex but the libctx and propq are always - * NULL. - * \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); - -/** Creates a new EC_GROUP object from an ECPARAMETERS object - * \param params pointer to the ECPARAMETERS object - * \return newly created EC_GROUP object with specified curve or NULL - * if an error occurred - */ -EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params); - -/** Creates an ECPARAMETERS object for the given EC_GROUP object. - * \param group pointer to the EC_GROUP object - * \param params pointer to an existing ECPARAMETERS object or NULL - * \return pointer to the new ECPARAMETERS object or NULL - * if an error occurred. - */ -ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, - ECPARAMETERS *params); - -/** Creates a new EC_GROUP object from an ECPKPARAMETERS object - * \param params pointer to an existing ECPKPARAMETERS object, or NULL - * \return newly created EC_GROUP object with specified curve, or NULL - * if an error occurred - */ -EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params); - -/** Creates an ECPKPARAMETERS object for the given EC_GROUP object. - * \param group pointer to the EC_GROUP object - * \param params pointer to an existing ECPKPARAMETERS object or NULL - * \return pointer to the new ECPKPARAMETERS object or NULL - * if an error occurred. - */ -ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group, - ECPKPARAMETERS *params); - -/********************************************************************/ -/* 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 is 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); -int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only, - BN_CTX *ctx); - -/********************************************************************/ -/* 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 occurred - */ -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); - -/** 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 occurred - */ -int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Returns the EC_METHOD used in EC_POINT object - * \param point EC_POINT object - * \return the EC_METHOD used - */ -OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_POINT_method_of(const 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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp - (const EC_GROUP *group, const EC_POINT *p, - BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** Sets the affine coordinates of an EC_POINT - * \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 occurred - */ -int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p, - const BIGNUM *x, const BIGNUM *y, - BN_CTX *ctx); - -/** Gets the affine coordinates of an EC_POINT. - * \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 occurred - */ -int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p, - BIGNUM *x, BIGNUM *y, BN_CTX *ctx); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Sets the affine coordinates of an EC_POINT. A synonym of - * EC_POINT_set_affine_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of - * EC_POINT_get_affine_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp - (const EC_GROUP *group, const EC_POINT *p, - BIGNUM *x, BIGNUM *y, BN_CTX *ctx); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** Sets the x9.62 compressed coordinates of a EC_POINT - * \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 occurred - */ -int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p, - const BIGNUM *x, int y_bit, - BN_CTX *ctx); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of - * EC_POINT_set_compressed_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of - * EC_POINT_set_affine_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of - * EC_POINT_get_affine_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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. A synonym of - * EC_POINT_set_compressed_coordinates - * \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 occurred - */ -OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m - (const EC_GROUP *group, EC_POINT *p, - const BIGNUM *x, int y_bit, BN_CTX *ctx); -# endif -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** 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 occurred - */ -int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, - const unsigned char *buf, size_t len, BN_CTX *ctx); - -/** Encodes an EC_POINT object to an allocated octet string - * \param group underlying EC_GROUP object - * \param point EC_POINT object - * \param form point conversion form - * \param pbuf returns pointer to allocated 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_point2buf(const EC_GROUP *group, const EC_POINT *point, - point_conversion_form_t form, - unsigned char **pbuf, BN_CTX *ctx); - -/* other interfaces to point2oct/oct2point: */ -# ifndef OPENSSL_NO_DEPRECATED_3_0 -OSSL_DEPRECATEDIN_3_0 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, - const EC_POINT *, - point_conversion_form_t form, - BIGNUM *, BN_CTX *); -OSSL_DEPRECATEDIN_3_0 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, - const BIGNUM *, - EC_POINT *, BN_CTX *); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -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 occurred - */ -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 occurred - */ -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 occurred - */ -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 the point is on the curve, 0 if not, or -1 on error - */ -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 1 if the points are not equal, 0 if they are, or -1 on error - */ -int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, - BN_CTX *ctx); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group, - EC_POINT *point, BN_CTX *ctx); -OSSL_DEPRECATEDIN_3_0 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-1} 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 further 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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/** 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 occurred - */ -int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, - const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** 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 occurred - */ -OSSL_DEPRECATEDIN_3_0 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 - */ -OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/********************************************************************/ -/* ASN1 stuff */ -/********************************************************************/ - -DECLARE_ASN1_ITEM(ECPKPARAMETERS) -DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS) -DECLARE_ASN1_ITEM(ECPARAMETERS) -DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) - -/* - * 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 - -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(EC_GROUP, i2d_ECPKParameters, bp, x) -# define d2i_ECPKParameters_fp(fp,x) \ - (EC_GROUP *)ASN1_d2i_fp(NULL, (d2i_of_void *)d2i_ECPKParameters, (fp), \ - (void **)(x)) -# define i2d_ECPKParameters_fp(fp,x) \ - ASN1_i2d_fp((i2d_of_void *)i2d_ECPKParameters, (fp), (void *)(x)) - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, - int off); -# ifndef OPENSSL_NO_STDIO -OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, - int off); -# endif -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -/********************************************************************/ -/* EC_KEY functions */ -/********************************************************************/ - -/* 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_SM2_RANGE 0x0004 -# define EC_FLAG_COFACTOR_ECDH 0x1000 -# define EC_FLAG_CHECK_NAMED_GROUP 0x2000 -# define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000 -# define EC_FLAG_CHECK_NAMED_GROUP_MASK \ - (EC_FLAG_CHECK_NAMED_GROUP | EC_FLAG_CHECK_NAMED_GROUP_NIST) - -/* Deprecated flags - it was using 0x01..0x02 */ -# define EC_FLAG_NON_FIPS_ALLOW 0x0000 -# define EC_FLAG_FIPS_CHECKED 0x0000 - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** - * Creates a new EC_KEY object. - * \param ctx The library context for to use for this EC_KEY. May be NULL in - * which case the default library context is used. - * \return EC_KEY object or NULL if an error occurred. - */ -OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_ex(OSSL_LIB_CTX *ctx, const char *propq); - -/** - * Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a - * NULL library context - * \return EC_KEY object or NULL if an error occurred. - */ -OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void); - -OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags); - -OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key); - -/** - * Creates a new EC_KEY object using a named curve as underlying - * EC_GROUP object. - * \param ctx The library context for to use for this EC_KEY. May be NULL in - * which case the default library context is used. - * \param propq Any property query string - * \param nid NID of the named curve. - * \return EC_KEY object or NULL if an error occurred. - */ -OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX *ctx, - const char *propq, - int nid); - -/** - * Creates a new EC_KEY object using a named curve as underlying - * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL - * library context and property query string. - * \param nid NID of the named curve. - * \return EC_KEY object or NULL if an error occurred. - */ -OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid); - -/** Frees a EC_KEY object. - * \param key EC_KEY object to be freed. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key); - -/** Returns the ENGINE object of a EC_KEY object - * \param eckey EC_KEY object - * \return the ENGINE object (possibly NULL). - */ -OSSL_DEPRECATEDIN_3_0 ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey); - -/** Returns the EC_GROUP object of a EC_KEY object - * \param key EC_KEY object - * \return the EC_GROUP object (possibly NULL). - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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). - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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) - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub); - -OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key); -OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); -OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key); -OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey, - point_conversion_form_t cform); -# endif /*OPENSSL_NO_DEPRECATED_3_0 */ - -# 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) - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg); -OSSL_DEPRECATEDIN_3_0 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx); - -/* wrapper functions for the underlying EC_GROUP object */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key); - -/** Indicates if an EC_KEY can be used for signing. - * \param eckey the EC_KEY object - * \return 1 if can can sign and 0 otherwise. - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey); - -/** Sets a public key from affine coordinates performing - * necessary 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. - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, - BIGNUM *x, - BIGNUM *y); - -/** Encodes an EC_KEY public key to an allocated octet string - * \param key key to encode - * \param form point conversion form - * \param pbuf returns pointer to allocated buffer - * \param ctx BN_CTX object (optional) - * \return the length of the encoded octet string or 0 if an error occurred - */ -OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key, - point_conversion_form_t form, - unsigned char **pbuf, BN_CTX *ctx); - -/** Decodes a EC_KEY public key from a octet string - * \param key key to decode - * \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 occurred - */ - -OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, - size_t len, BN_CTX *ctx); - -/** Decodes an EC_KEY private key from an octet string - * \param key key to decode - * \param buf memory buffer with the encoded private key - * \param len length of the encoded key - * \return 1 on success and 0 if an error occurred - */ - -OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf, - size_t len); - -/** Encodes a EC_KEY private key to an octet string - * \param key key to encode - * \param buf memory buffer for the result. If NULL the function returns - * required buffer size. - * \param len length of the memory buffer - * \return the length of the encoded octet string or 0 if an error occurred - */ - -OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key, - unsigned char *buf, size_t len); - -/** Encodes an EC_KEY private key to an allocated octet string - * \param eckey key to encode - * \param pbuf returns pointer to allocated buffer - * \return the length of the encoded octet string or 0 if an error occurred - */ -OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey, - unsigned char **pbuf); - -/********************************************************************/ -/* 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. - */ -OSSL_DEPRECATEDIN_3_0 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. - */ -OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const 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. - */ -OSSL_DEPRECATEDIN_3_0 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 parameters 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. - */ -OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key, - unsigned char **out); - -/********************************************************************/ -/* de- and encoding functions for EC public key */ -/* (octet string, not DER -- hence 'o2i' and 'i2o') */ -/********************************************************************/ - -/** Decodes an 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. - */ -OSSL_DEPRECATEDIN_3_0 EC_KEY *o2i_ECPublicKey(EC_KEY **key, - const unsigned char **in, long len); - -/** Encodes an 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 - */ -OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out); - -/** 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 - */ -OSSL_DEPRECATEDIN_3_0 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 - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off); - -# ifndef OPENSSL_NO_STDIO -/** 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 - */ -OSSL_DEPRECATEDIN_3_0 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 - */ -OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); -# endif /* OPENSSL_NO_STDIO */ - -OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void); -OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void); -OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth); -OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key); -OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth); -OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_method(ENGINE *engine); - -/** The old name for ecdh_KDF_X9_63 - * The ECDH KDF specification has been mistakingly attributed to ANSI X9.62, - * it is actually specified in ANSI X9.63. - * This identifier is retained for backwards compatibility - */ -OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen, - const unsigned char *Z, size_t Zlen, - const unsigned char *sinfo, - size_t sinfolen, const EVP_MD *md); - -OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen, - const EC_POINT *pub_key, - const EC_KEY *ecdh, - void *(*KDF)(const void *in, - size_t inlen, void *out, - size_t *outlen)); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -typedef struct ECDSA_SIG_st ECDSA_SIG; - -/** Allocates and initialize a ECDSA_SIG structure - * \return pointer to a ECDSA_SIG structure or NULL if an error occurred - */ -ECDSA_SIG *ECDSA_SIG_new(void); - -/** frees a ECDSA_SIG structure - * \param sig pointer to the ECDSA_SIG structure - */ -void ECDSA_SIG_free(ECDSA_SIG *sig); - -/** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp - * (*pp += length of the DER encoded signature)). - * \param sig pointer to the ECDSA_SIG object - * \param pp pointer to a unsigned char pointer for the output or NULL - * \return the length of the DER encoded ECDSA_SIG object or a negative value - * on error - */ -DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG) - -/** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp - * (*pp += len)). - * \param sig pointer to ECDSA_SIG pointer (may be NULL) - * \param pp memory buffer with the DER encoded signature - * \param len length of the buffer - * \return pointer to the decoded ECDSA_SIG structure (or NULL) - */ - -/** Accessor for r and s fields of ECDSA_SIG - * \param sig pointer to ECDSA_SIG structure - * \param pr pointer to BIGNUM pointer for r (may be NULL) - * \param ps pointer to BIGNUM pointer for s (may be NULL) - */ -void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps); - -/** Accessor for r field of ECDSA_SIG - * \param sig pointer to ECDSA_SIG structure - */ -const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig); - -/** Accessor for s field of ECDSA_SIG - * \param sig pointer to ECDSA_SIG structure - */ -const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig); - -/** Setter for r and s fields of ECDSA_SIG - * \param sig pointer to ECDSA_SIG structure - * \param r pointer to BIGNUM for r - * \param s pointer to BIGNUM for s - */ -int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s); - -# ifndef OPENSSL_NO_DEPRECATED_3_0 -/** Computes the ECDSA signature of the given hash value using - * the supplied private key and returns the created signature. - * \param dgst pointer to the hash value - * \param dgst_len length of the hash value - * \param eckey EC_KEY object containing a private EC key - * \return pointer to a ECDSA_SIG structure or NULL if an error occurred - */ -OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, - int dgst_len, EC_KEY *eckey); - -/** Computes ECDSA signature of a given hash value using the supplied - * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). - * \param dgst pointer to the hash value to sign - * \param dgstlen length of the hash value - * \param kinv BIGNUM with a pre-computed inverse k (optional) - * \param rp BIGNUM with a pre-computed rp value (optional), - * see ECDSA_sign_setup - * \param eckey EC_KEY object containing a private EC key - * \return pointer to a ECDSA_SIG structure or NULL if an error occurred - */ -OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, - int dgstlen, const BIGNUM *kinv, - const BIGNUM *rp, EC_KEY *eckey); - -/** Verifies that the supplied signature is a valid ECDSA - * signature of the supplied hash value using the supplied public key. - * \param dgst pointer to the hash value - * \param dgst_len length of the hash value - * \param sig ECDSA_SIG structure - * \param eckey EC_KEY object containing a public EC key - * \return 1 if the signature is valid, 0 if the signature is invalid - * and -1 on error - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len, - const ECDSA_SIG *sig, EC_KEY *eckey); - -/** Precompute parts of the signing operation - * \param eckey EC_KEY object containing a private EC key - * \param ctx BN_CTX object (optional) - * \param kinv BIGNUM pointer for the inverse of k - * \param rp BIGNUM pointer for x coordinate of k * generator - * \return 1 on success and 0 otherwise - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, - BIGNUM **kinv, BIGNUM **rp); - -/** Computes ECDSA signature of a given hash value using the supplied - * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). - * \param type this parameter is ignored - * \param dgst pointer to the hash value to sign - * \param dgstlen length of the hash value - * \param sig memory for the DER encoded created signature - * \param siglen pointer to the length of the returned signature - * \param eckey EC_KEY object containing a private EC key - * \return 1 on success and 0 otherwise - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst, - int dgstlen, unsigned char *sig, - unsigned int *siglen, EC_KEY *eckey); - -/** Computes ECDSA signature of a given hash value using the supplied - * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). - * \param type this parameter is ignored - * \param dgst pointer to the hash value to sign - * \param dgstlen length of the hash value - * \param sig buffer to hold the DER encoded signature - * \param siglen pointer to the length of the returned signature - * \param kinv BIGNUM with a pre-computed inverse k (optional) - * \param rp BIGNUM with a pre-computed rp value (optional), - * see ECDSA_sign_setup - * \param eckey EC_KEY object containing a private EC key - * \return 1 on success and 0 otherwise - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst, - int dgstlen, unsigned char *sig, - unsigned int *siglen, const BIGNUM *kinv, - const BIGNUM *rp, EC_KEY *eckey); - -/** Verifies that the given signature is valid ECDSA signature - * of the supplied hash value using the specified public key. - * \param type this parameter is ignored - * \param dgst pointer to the hash value - * \param dgstlen length of the hash value - * \param sig pointer to the DER encoded signature - * \param siglen length of the DER encoded signature - * \param eckey EC_KEY object containing a public EC key - * \return 1 if the signature is valid, 0 if the signature is invalid - * and -1 on error - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst, - int dgstlen, const unsigned char *sig, - int siglen, EC_KEY *eckey); - -/** Returns the maximum length of the DER encoded signature - * \param eckey EC_KEY object - * \return numbers of bytes required for the DER encoded signature - */ -OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey); - -/********************************************************************/ -/* EC_KEY_METHOD constructors, destructors, writers and accessors */ -/********************************************************************/ - -OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth); -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth); -OSSL_DEPRECATEDIN_3_0 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)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth, - int (*keygen)(EC_KEY *key)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key - (EC_KEY_METHOD *meth, - int (*ckey)(unsigned char **psec, size_t *pseclen, - const EC_POINT *pub_key, const EC_KEY *ecdh)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign - (EC_KEY_METHOD *meth, - int (*sign)(int type, const unsigned char *dgst, - int dlen, unsigned char *sig, - unsigned int *siglen, - const BIGNUM *kinv, const BIGNUM *r, - EC_KEY *eckey), - int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, - BIGNUM **kinvp, BIGNUM **rp), - ECDSA_SIG *(*sign_sig)(const unsigned char *dgst, - int dgst_len, - const BIGNUM *in_kinv, - const BIGNUM *in_r, - EC_KEY *eckey)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify - (EC_KEY_METHOD *meth, - int (*verify)(int type, const unsigned - char *dgst, int dgst_len, - const unsigned char *sigbuf, - int sig_len, EC_KEY *eckey), - int (*verify_sig)(const unsigned char *dgst, - int dgst_len, const ECDSA_SIG *sig, - EC_KEY *eckey)); - -OSSL_DEPRECATEDIN_3_0 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)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen - (const EC_KEY_METHOD *meth, int (**pkeygen)(EC_KEY *key)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key - (const EC_KEY_METHOD *meth, - int (**pck)(unsigned char **psec, - size_t *pseclen, - const EC_POINT *pub_key, - const EC_KEY *ecdh)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign - (const EC_KEY_METHOD *meth, - int (**psign)(int type, const unsigned char *dgst, - int dlen, unsigned char *sig, - unsigned int *siglen, - const BIGNUM *kinv, const BIGNUM *r, - EC_KEY *eckey), - int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, - BIGNUM **kinvp, BIGNUM **rp), - ECDSA_SIG *(**psign_sig)(const unsigned char *dgst, - int dgst_len, - const BIGNUM *in_kinv, - const BIGNUM *in_r, - EC_KEY *eckey)); - -OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify - (const EC_KEY_METHOD *meth, - int (**pverify)(int type, const unsigned - char *dgst, int dgst_len, - const unsigned char *sigbuf, - int sig_len, EC_KEY *eckey), - int (**pverify_sig)(const unsigned char *dgst, - int dgst_len, - const ECDSA_SIG *sig, - EC_KEY *eckey)); -# endif /* OPENSSL_NO_DEPRECATED_3_0 */ - -# define EVP_EC_gen(curve) \ - EVP_PKEY_Q_keygen(NULL, NULL, "EC", (char *)(strstr(curve, ""))) -# define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \ - d2i_ECParameters, x) - -# 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 - -# endif -# ifdef __cplusplus -} -# endif -#endif +/*
+ * Copyright 2002-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2002, Oracle and/or its affiliates. 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
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OPENSSL_EC_H
+# define OPENSSL_EC_H
+# pragma once
+
+# include <openssl/macros.h>
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+# define HEADER_EC_H
+# endif
+
+# include <openssl/opensslconf.h>
+# include <openssl/types.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* Values for EVP_PKEY_CTX_set_ec_param_enc() */
+# define OPENSSL_EC_EXPLICIT_CURVE 0x000
+# define OPENSSL_EC_NAMED_CURVE 0x001
+
+int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid);
+int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc);
+int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode);
+int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx);
+
+int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf);
+int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx);
+
+int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
+int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
+
+int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len);
+int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len);
+
+int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm,
+ int len);
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+OSSL_DEPRECATEDIN_3_0
+int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm);
+# endif
+
+# 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)
+
+/* KDF types */
+# define EVP_PKEY_ECDH_KDF_NONE 1
+# define EVP_PKEY_ECDH_KDF_X9_63 2
+/*
+ * The old name for EVP_PKEY_ECDH_KDF_X9_63
+ * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62,
+ * it is actually specified in ANSI X9.63.
+ * This identifier is retained for backwards compatibility
+ */
+# define EVP_PKEY_ECDH_KDF_X9_62 EVP_PKEY_ECDH_KDF_X9_63
+
+/** 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 0x04 */
+ 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;
+
+const char *OSSL_EC_curve_nid2name(int nid);
+
+# ifndef OPENSSL_NO_EC
+# include <openssl/asn1.h>
+# include <openssl/symhacks.h>
+# ifndef OPENSSL_NO_DEPRECATED_1_1_0
+# include <openssl/bn.h>
+# endif
+# include <openssl/ecerr.h>
+
+# ifndef OPENSSL_ECC_MAX_FIELD_BITS
+# define OPENSSL_ECC_MAX_FIELD_BITS 661
+# endif
+
+# include <openssl/params.h>
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+typedef struct ec_method_st EC_METHOD;
+# endif
+typedef struct ec_group_st EC_GROUP;
+typedef struct ec_point_st EC_POINT;
+typedef struct ecpk_parameters_st ECPKPARAMETERS;
+typedef struct ec_parameters_st ECPARAMETERS;
+
+/********************************************************************/
+/* EC_METHODs for curves over GF(p) */
+/********************************************************************/
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Returns the basic GFp ec methods which provides the basis for the
+ * optimized methods.
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_simple_method(void);
+
+/** Returns GFp methods using montgomery multiplication.
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_mont_method(void);
+
+/** Returns GFp methods using optimized methods for NIST recommended curves
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 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
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp224_method(void);
+
+/** Returns 64-bit optimized methods for nistp256
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp256_method(void);
+
+/** Returns 64-bit optimized methods for nistp521
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp521_method(void);
+# endif /* OPENSSL_NO_EC_NISTP_64_GCC_128 */
+
+# ifndef OPENSSL_NO_EC2M
+/********************************************************************/
+/* EC_METHOD for curves over GF(2^m) */
+/********************************************************************/
+
+/** Returns the basic GF2m ec method
+ * \return EC_METHOD object
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
+
+/** Clears and frees a EC_GROUP object
+ * \param group EC_GROUP object to be cleared and freed.
+ */
+OSSL_DEPRECATEDIN_3_0 void EC_GROUP_clear_free(EC_GROUP *group);
+
+/** Returns the EC_METHOD of the EC_GROUP object.
+ * \param group EC_GROUP object
+ * \return EC_METHOD used in this EC_GROUP object.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_METHOD_get_field_type(const EC_METHOD *meth);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** Frees a EC_GROUP object
+ * \param group EC_GROUP object to be freed.
+ */
+void EC_GROUP_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 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);
+
+/** Sets the generator and its 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 occurred
+ */
+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);
+
+/** Returns the montgomery data for order(Generator)
+ * \param group EC_GROUP object
+ * \return the currently used montgomery data (possibly NULL).
+*/
+BN_MONT_CTX *EC_GROUP_get_mont_data(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 unused
+ * \return 1 on success and 0 if an error occurred
+ */
+int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
+
+/** Gets the order of an EC_GROUP
+ * \param group EC_GROUP object
+ * \return the group order
+ */
+const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
+
+/** Gets the number of bits of the order of an EC_GROUP
+ * \param group EC_GROUP object
+ * \return number of bits of group order.
+ */
+int EC_GROUP_order_bits(const EC_GROUP *group);
+
+/** Gets the cofactor of a EC_GROUP
+ * \param group EC_GROUP object
+ * \param cofactor BIGNUM to which the cofactor is copied
+ * \param ctx unused
+ * \return 1 on success and 0 if an error occurred
+ */
+int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
+ BN_CTX *ctx);
+
+/** Gets the cofactor of an EC_GROUP
+ * \param group EC_GROUP object
+ * \return the group cofactor
+ */
+const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group);
+
+/** 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);
+
+/** Gets the field of an EC_GROUP
+ * \param group EC_GROUP object
+ * \return the group field
+ */
+const BIGNUM *EC_GROUP_get0_field(const EC_GROUP *group);
+
+/** Returns the field type of the EC_GROUP.
+ * \param group EC_GROUP object
+ * \return NID of the underlying field type OID.
+ */
+int EC_GROUP_get_field_type(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 parameters of an ec curve defined by y^2 = x^3 + a*x + b (for GFp)
+ * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m)
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+int EC_GROUP_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
+ const BIGNUM *b, BN_CTX *ctx);
+
+/** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp)
+ * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m)
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+int EC_GROUP_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b,
+ BN_CTX *ctx);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GFp(EC_GROUP *group,
+ const BIGNUM *p,
+ const BIGNUM *a,
+ const BIGNUM *b,
+ BN_CTX *ctx);
+
+/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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 an ec curve. Synonym for EC_GROUP_set_curve
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GF2m(EC_GROUP *group,
+ const BIGNUM *p,
+ const BIGNUM *a,
+ const BIGNUM *b,
+ BN_CTX *ctx);
+
+/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
+ * \param group EC_GROUP object
+ * \param p BIGNUM with the prime number (GFp) or the polynomial
+ * defining the underlying field (GF2m)
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group,
+ BIGNUM *p,
+ BIGNUM *a, BIGNUM *b,
+ BN_CTX *ctx);
+# endif /* OPENSSL_NO_EC2M */
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** 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 the groups are equal, 1 if not, or -1 on error
+ */
+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 parameters.
+ * The parameters may be explicit or a named curve,
+ * \param params A list of parameters describing the group.
+ * \param libctx The associated library context or NULL for the default
+ * context
+ * \param propq A property query string
+ * \return newly created EC_GROUP object with specified parameters or NULL
+ * if an error occurred
+ */
+EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
+ OSSL_LIB_CTX *libctx, const char *propq);
+
+/**
+ * Creates a EC_GROUP object with a curve specified by a NID
+ * \param libctx The associated library context or NULL for the default
+ * context
+ * \param propq A property query string
+ * \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_ex(OSSL_LIB_CTX *libctx, const char *propq,
+ int nid);
+
+/**
+ * Creates a EC_GROUP object with a curve specified by a NID. Same as
+ * EC_GROUP_new_by_curve_name_ex but the libctx and propq are always
+ * NULL.
+ * \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);
+
+/** Creates a new EC_GROUP object from an ECPARAMETERS object
+ * \param params pointer to the ECPARAMETERS object
+ * \return newly created EC_GROUP object with specified curve or NULL
+ * if an error occurred
+ */
+EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
+
+/** Creates an ECPARAMETERS object for the given EC_GROUP object.
+ * \param group pointer to the EC_GROUP object
+ * \param params pointer to an existing ECPARAMETERS object or NULL
+ * \return pointer to the new ECPARAMETERS object or NULL
+ * if an error occurred.
+ */
+ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
+ ECPARAMETERS *params);
+
+/** Creates a new EC_GROUP object from an ECPKPARAMETERS object
+ * \param params pointer to an existing ECPKPARAMETERS object, or NULL
+ * \return newly created EC_GROUP object with specified curve, or NULL
+ * if an error occurred
+ */
+EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
+
+/** Creates an ECPKPARAMETERS object for the given EC_GROUP object.
+ * \param group pointer to the EC_GROUP object
+ * \param params pointer to an existing ECPKPARAMETERS object or NULL
+ * \return pointer to the new ECPKPARAMETERS object or NULL
+ * if an error occurred.
+ */
+ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
+ ECPKPARAMETERS *params);
+
+/********************************************************************/
+/* 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 is 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);
+int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only,
+ BN_CTX *ctx);
+
+/********************************************************************/
+/* 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 occurred
+ */
+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);
+
+/** 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 occurred
+ */
+int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Returns the EC_METHOD used in EC_POINT object
+ * \param point EC_POINT object
+ * \return the EC_METHOD used
+ */
+OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_POINT_method_of(const 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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp
+ (const EC_GROUP *group, const EC_POINT *p,
+ BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** Sets the affine coordinates of an EC_POINT
+ * \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 occurred
+ */
+int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p,
+ const BIGNUM *x, const BIGNUM *y,
+ BN_CTX *ctx);
+
+/** Gets the affine coordinates of an EC_POINT.
+ * \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 occurred
+ */
+int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p,
+ BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Sets the affine coordinates of an EC_POINT. A synonym of
+ * EC_POINT_set_affine_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of
+ * EC_POINT_get_affine_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp
+ (const EC_GROUP *group, const EC_POINT *p,
+ BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** Sets the x9.62 compressed coordinates of a EC_POINT
+ * \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 occurred
+ */
+int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p,
+ const BIGNUM *x, int y_bit,
+ BN_CTX *ctx);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
+ * EC_POINT_set_compressed_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of
+ * EC_POINT_set_affine_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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 an EC_POINT. A synonym of
+ * EC_POINT_get_affine_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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. A synonym of
+ * EC_POINT_set_compressed_coordinates
+ * \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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m
+ (const EC_GROUP *group, EC_POINT *p,
+ const BIGNUM *x, int y_bit, BN_CTX *ctx);
+# endif
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** 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 occurred
+ */
+int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
+ const unsigned char *buf, size_t len, BN_CTX *ctx);
+
+/** Encodes an EC_POINT object to an allocated octet string
+ * \param group underlying EC_GROUP object
+ * \param point EC_POINT object
+ * \param form point conversion form
+ * \param pbuf returns pointer to allocated 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_point2buf(const EC_GROUP *group, const EC_POINT *point,
+ point_conversion_form_t form,
+ unsigned char **pbuf, BN_CTX *ctx);
+
+/* other interfaces to point2oct/oct2point: */
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+OSSL_DEPRECATEDIN_3_0 BIGNUM *EC_POINT_point2bn(const EC_GROUP *,
+ const EC_POINT *,
+ point_conversion_form_t form,
+ BIGNUM *, BN_CTX *);
+OSSL_DEPRECATEDIN_3_0 EC_POINT *EC_POINT_bn2point(const EC_GROUP *,
+ const BIGNUM *,
+ EC_POINT *, BN_CTX *);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+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 occurred
+ */
+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 occurred
+ */
+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 occurred
+ */
+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 the point is on the curve, 0 if not, or -1 on error
+ */
+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 1 if the points are not equal, 0 if they are, or -1 on error
+ */
+int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
+ BN_CTX *ctx);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group,
+ EC_POINT *point, BN_CTX *ctx);
+OSSL_DEPRECATEDIN_3_0 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-1} 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 further 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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/** 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 occurred
+ */
+int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
+ const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** 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 occurred
+ */
+OSSL_DEPRECATEDIN_3_0 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
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/********************************************************************/
+/* ASN1 stuff */
+/********************************************************************/
+
+DECLARE_ASN1_ITEM(ECPKPARAMETERS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
+DECLARE_ASN1_ITEM(ECPARAMETERS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
+
+/*
+ * 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
+
+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(EC_GROUP, i2d_ECPKParameters, bp, x)
+# define d2i_ECPKParameters_fp(fp,x) \
+ (EC_GROUP *)ASN1_d2i_fp(NULL, (d2i_of_void *)d2i_ECPKParameters, (fp), \
+ (void **)(x))
+# define i2d_ECPKParameters_fp(fp,x) \
+ ASN1_i2d_fp((i2d_of_void *)i2d_ECPKParameters, (fp), (void *)(x))
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO *bp, const EC_GROUP *x,
+ int off);
+# ifndef OPENSSL_NO_STDIO
+OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x,
+ int off);
+# endif
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+/********************************************************************/
+/* EC_KEY functions */
+/********************************************************************/
+
+/* 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_SM2_RANGE 0x0004
+# define EC_FLAG_COFACTOR_ECDH 0x1000
+# define EC_FLAG_CHECK_NAMED_GROUP 0x2000
+# define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000
+# define EC_FLAG_CHECK_NAMED_GROUP_MASK \
+ (EC_FLAG_CHECK_NAMED_GROUP | EC_FLAG_CHECK_NAMED_GROUP_NIST)
+
+/* Deprecated flags - it was using 0x01..0x02 */
+# define EC_FLAG_NON_FIPS_ALLOW 0x0000
+# define EC_FLAG_FIPS_CHECKED 0x0000
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/**
+ * Creates a new EC_KEY object.
+ * \param ctx The library context for to use for this EC_KEY. May be NULL in
+ * which case the default library context is used.
+ * \return EC_KEY object or NULL if an error occurred.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_ex(OSSL_LIB_CTX *ctx, const char *propq);
+
+/**
+ * Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a
+ * NULL library context
+ * \return EC_KEY object or NULL if an error occurred.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void);
+
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key);
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags);
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags);
+
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key);
+
+/**
+ * Creates a new EC_KEY object using a named curve as underlying
+ * EC_GROUP object.
+ * \param ctx The library context for to use for this EC_KEY. May be NULL in
+ * which case the default library context is used.
+ * \param propq Any property query string
+ * \param nid NID of the named curve.
+ * \return EC_KEY object or NULL if an error occurred.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX *ctx,
+ const char *propq,
+ int nid);
+
+/**
+ * Creates a new EC_KEY object using a named curve as underlying
+ * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL
+ * library context and property query string.
+ * \param nid NID of the named curve.
+ * \return EC_KEY object or NULL if an error occurred.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid);
+
+/** Frees a EC_KEY object.
+ * \param key EC_KEY object to be freed.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key);
+
+/** Returns the ENGINE object of a EC_KEY object
+ * \param eckey EC_KEY object
+ * \return the ENGINE object (possibly NULL).
+ */
+OSSL_DEPRECATEDIN_3_0 ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey);
+
+/** Returns the EC_GROUP object of a EC_KEY object
+ * \param key EC_KEY object
+ * \return the EC_GROUP object (possibly NULL).
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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).
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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)
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
+
+OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
+OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey,
+ point_conversion_form_t cform);
+# endif /*OPENSSL_NO_DEPRECATED_3_0 */
+
+# 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)
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
+OSSL_DEPRECATEDIN_3_0 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
+
+/* wrapper functions for the underlying EC_GROUP object */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key);
+
+/** Indicates if an EC_KEY can be used for signing.
+ * \param eckey the EC_KEY object
+ * \return 1 if can can sign and 0 otherwise.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey);
+
+/** Sets a public key from affine coordinates performing
+ * necessary 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
+ BIGNUM *x,
+ BIGNUM *y);
+
+/** Encodes an EC_KEY public key to an allocated octet string
+ * \param key key to encode
+ * \param form point conversion form
+ * \param pbuf returns pointer to allocated buffer
+ * \param ctx BN_CTX object (optional)
+ * \return the length of the encoded octet string or 0 if an error occurred
+ */
+OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key,
+ point_conversion_form_t form,
+ unsigned char **pbuf, BN_CTX *ctx);
+
+/** Decodes a EC_KEY public key from a octet string
+ * \param key key to decode
+ * \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 occurred
+ */
+
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf,
+ size_t len, BN_CTX *ctx);
+
+/** Decodes an EC_KEY private key from an octet string
+ * \param key key to decode
+ * \param buf memory buffer with the encoded private key
+ * \param len length of the encoded key
+ * \return 1 on success and 0 if an error occurred
+ */
+
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf,
+ size_t len);
+
+/** Encodes a EC_KEY private key to an octet string
+ * \param key key to encode
+ * \param buf memory buffer for the result. If NULL the function returns
+ * required buffer size.
+ * \param len length of the memory buffer
+ * \return the length of the encoded octet string or 0 if an error occurred
+ */
+
+OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key,
+ unsigned char *buf, size_t len);
+
+/** Encodes an EC_KEY private key to an allocated octet string
+ * \param eckey key to encode
+ * \param pbuf returns pointer to allocated buffer
+ * \return the length of the encoded octet string or 0 if an error occurred
+ */
+OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey,
+ unsigned char **pbuf);
+
+/********************************************************************/
+/* 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const 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.
+ */
+OSSL_DEPRECATEDIN_3_0 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 parameters 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.
+ */
+OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key,
+ unsigned char **out);
+
+/********************************************************************/
+/* de- and encoding functions for EC public key */
+/* (octet string, not DER -- hence 'o2i' and 'i2o') */
+/********************************************************************/
+
+/** Decodes an 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.
+ */
+OSSL_DEPRECATEDIN_3_0 EC_KEY *o2i_ECPublicKey(EC_KEY **key,
+ const unsigned char **in, long len);
+
+/** Encodes an 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
+ */
+OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out);
+
+/** 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
+ */
+OSSL_DEPRECATEDIN_3_0 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
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
+
+# ifndef OPENSSL_NO_STDIO
+/** 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
+ */
+OSSL_DEPRECATEDIN_3_0 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
+ */
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
+# endif /* OPENSSL_NO_STDIO */
+
+OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
+OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
+OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
+OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
+OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_method(ENGINE *engine);
+
+/** The old name for ecdh_KDF_X9_63
+ * The ECDH KDF specification has been mistakingly attributed to ANSI X9.62,
+ * it is actually specified in ANSI X9.63.
+ * This identifier is retained for backwards compatibility
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
+ const unsigned char *Z, size_t Zlen,
+ const unsigned char *sinfo,
+ size_t sinfolen, const EVP_MD *md);
+
+OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen,
+ const EC_POINT *pub_key,
+ const EC_KEY *ecdh,
+ void *(*KDF)(const void *in,
+ size_t inlen, void *out,
+ size_t *outlen));
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+typedef struct ECDSA_SIG_st ECDSA_SIG;
+
+/** Allocates and initialize a ECDSA_SIG structure
+ * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
+ */
+ECDSA_SIG *ECDSA_SIG_new(void);
+
+/** frees a ECDSA_SIG structure
+ * \param sig pointer to the ECDSA_SIG structure
+ */
+void ECDSA_SIG_free(ECDSA_SIG *sig);
+
+/** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp
+ * (*pp += length of the DER encoded signature)).
+ * \param sig pointer to the ECDSA_SIG object
+ * \param pp pointer to a unsigned char pointer for the output or NULL
+ * \return the length of the DER encoded ECDSA_SIG object or a negative value
+ * on error
+ */
+DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG)
+
+/** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp
+ * (*pp += len)).
+ * \param sig pointer to ECDSA_SIG pointer (may be NULL)
+ * \param pp memory buffer with the DER encoded signature
+ * \param len length of the buffer
+ * \return pointer to the decoded ECDSA_SIG structure (or NULL)
+ */
+
+/** Accessor for r and s fields of ECDSA_SIG
+ * \param sig pointer to ECDSA_SIG structure
+ * \param pr pointer to BIGNUM pointer for r (may be NULL)
+ * \param ps pointer to BIGNUM pointer for s (may be NULL)
+ */
+void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
+
+/** Accessor for r field of ECDSA_SIG
+ * \param sig pointer to ECDSA_SIG structure
+ */
+const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
+
+/** Accessor for s field of ECDSA_SIG
+ * \param sig pointer to ECDSA_SIG structure
+ */
+const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
+
+/** Setter for r and s fields of ECDSA_SIG
+ * \param sig pointer to ECDSA_SIG structure
+ * \param r pointer to BIGNUM for r
+ * \param s pointer to BIGNUM for s
+ */
+int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
+
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+/** Computes the ECDSA signature of the given hash value using
+ * the supplied private key and returns the created signature.
+ * \param dgst pointer to the hash value
+ * \param dgst_len length of the hash value
+ * \param eckey EC_KEY object containing a private EC key
+ * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
+ */
+OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst,
+ int dgst_len, EC_KEY *eckey);
+
+/** Computes ECDSA signature of a given hash value using the supplied
+ * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
+ * \param dgst pointer to the hash value to sign
+ * \param dgstlen length of the hash value
+ * \param kinv BIGNUM with a pre-computed inverse k (optional)
+ * \param rp BIGNUM with a pre-computed rp value (optional),
+ * see ECDSA_sign_setup
+ * \param eckey EC_KEY object containing a private EC key
+ * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
+ */
+OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst,
+ int dgstlen, const BIGNUM *kinv,
+ const BIGNUM *rp, EC_KEY *eckey);
+
+/** Verifies that the supplied signature is a valid ECDSA
+ * signature of the supplied hash value using the supplied public key.
+ * \param dgst pointer to the hash value
+ * \param dgst_len length of the hash value
+ * \param sig ECDSA_SIG structure
+ * \param eckey EC_KEY object containing a public EC key
+ * \return 1 if the signature is valid, 0 if the signature is invalid
+ * and -1 on error
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
+ const ECDSA_SIG *sig, EC_KEY *eckey);
+
+/** Precompute parts of the signing operation
+ * \param eckey EC_KEY object containing a private EC key
+ * \param ctx BN_CTX object (optional)
+ * \param kinv BIGNUM pointer for the inverse of k
+ * \param rp BIGNUM pointer for x coordinate of k * generator
+ * \return 1 on success and 0 otherwise
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx,
+ BIGNUM **kinv, BIGNUM **rp);
+
+/** Computes ECDSA signature of a given hash value using the supplied
+ * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value to sign
+ * \param dgstlen length of the hash value
+ * \param sig memory for the DER encoded created signature
+ * \param siglen pointer to the length of the returned signature
+ * \param eckey EC_KEY object containing a private EC key
+ * \return 1 on success and 0 otherwise
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst,
+ int dgstlen, unsigned char *sig,
+ unsigned int *siglen, EC_KEY *eckey);
+
+/** Computes ECDSA signature of a given hash value using the supplied
+ * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value to sign
+ * \param dgstlen length of the hash value
+ * \param sig buffer to hold the DER encoded signature
+ * \param siglen pointer to the length of the returned signature
+ * \param kinv BIGNUM with a pre-computed inverse k (optional)
+ * \param rp BIGNUM with a pre-computed rp value (optional),
+ * see ECDSA_sign_setup
+ * \param eckey EC_KEY object containing a private EC key
+ * \return 1 on success and 0 otherwise
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst,
+ int dgstlen, unsigned char *sig,
+ unsigned int *siglen, const BIGNUM *kinv,
+ const BIGNUM *rp, EC_KEY *eckey);
+
+/** Verifies that the given signature is valid ECDSA signature
+ * of the supplied hash value using the specified public key.
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value
+ * \param dgstlen length of the hash value
+ * \param sig pointer to the DER encoded signature
+ * \param siglen length of the DER encoded signature
+ * \param eckey EC_KEY object containing a public EC key
+ * \return 1 if the signature is valid, 0 if the signature is invalid
+ * and -1 on error
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst,
+ int dgstlen, const unsigned char *sig,
+ int siglen, EC_KEY *eckey);
+
+/** Returns the maximum length of the DER encoded signature
+ * \param eckey EC_KEY object
+ * \return numbers of bytes required for the DER encoded signature
+ */
+OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey);
+
+/********************************************************************/
+/* EC_KEY_METHOD constructors, destructors, writers and accessors */
+/********************************************************************/
+
+OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
+OSSL_DEPRECATEDIN_3_0 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));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
+ int (*keygen)(EC_KEY *key));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key
+ (EC_KEY_METHOD *meth,
+ int (*ckey)(unsigned char **psec, size_t *pseclen,
+ const EC_POINT *pub_key, const EC_KEY *ecdh));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign
+ (EC_KEY_METHOD *meth,
+ int (*sign)(int type, const unsigned char *dgst,
+ int dlen, unsigned char *sig,
+ unsigned int *siglen,
+ const BIGNUM *kinv, const BIGNUM *r,
+ EC_KEY *eckey),
+ int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
+ BIGNUM **kinvp, BIGNUM **rp),
+ ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
+ int dgst_len,
+ const BIGNUM *in_kinv,
+ const BIGNUM *in_r,
+ EC_KEY *eckey));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify
+ (EC_KEY_METHOD *meth,
+ int (*verify)(int type, const unsigned
+ char *dgst, int dgst_len,
+ const unsigned char *sigbuf,
+ int sig_len, EC_KEY *eckey),
+ int (*verify_sig)(const unsigned char *dgst,
+ int dgst_len, const ECDSA_SIG *sig,
+ EC_KEY *eckey));
+
+OSSL_DEPRECATEDIN_3_0 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));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen
+ (const EC_KEY_METHOD *meth, int (**pkeygen)(EC_KEY *key));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key
+ (const EC_KEY_METHOD *meth,
+ int (**pck)(unsigned char **psec,
+ size_t *pseclen,
+ const EC_POINT *pub_key,
+ const EC_KEY *ecdh));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign
+ (const EC_KEY_METHOD *meth,
+ int (**psign)(int type, const unsigned char *dgst,
+ int dlen, unsigned char *sig,
+ unsigned int *siglen,
+ const BIGNUM *kinv, const BIGNUM *r,
+ EC_KEY *eckey),
+ int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
+ BIGNUM **kinvp, BIGNUM **rp),
+ ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
+ int dgst_len,
+ const BIGNUM *in_kinv,
+ const BIGNUM *in_r,
+ EC_KEY *eckey));
+
+OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify
+ (const EC_KEY_METHOD *meth,
+ int (**pverify)(int type, const unsigned
+ char *dgst, int dgst_len,
+ const unsigned char *sigbuf,
+ int sig_len, EC_KEY *eckey),
+ int (**pverify_sig)(const unsigned char *dgst,
+ int dgst_len,
+ const ECDSA_SIG *sig,
+ EC_KEY *eckey));
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+# define EVP_EC_gen(curve) \
+ EVP_PKEY_Q_keygen(NULL, NULL, "EC", (char *)(strstr(curve, "")))
+# define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \
+ d2i_ECParameters, x)
+
+# 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
+
+# endif
+# ifdef __cplusplus
+}
+# endif
+#endif
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