| /* |
| * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved. |
| * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #ifndef HEADER_EC_H |
| # define HEADER_EC_H |
| |
| # include <openssl/opensslconf.h> |
| |
| # ifndef OPENSSL_NO_EC |
| # include <openssl/asn1.h> |
| # include <openssl/symhacks.h> |
| # if OPENSSL_API_COMPAT < 0x10100000L |
| # include <openssl/bn.h> |
| # endif |
| # include <openssl/ecerr.h> |
| # ifdef __cplusplus |
| extern "C" { |
| # endif |
| |
| # ifndef OPENSSL_ECC_MAX_FIELD_BITS |
| # define OPENSSL_ECC_MAX_FIELD_BITS 661 |
| # endif |
| |
| /** Enum for the point conversion form as defined in X9.62 (ECDSA) |
| * for the encoding of a elliptic curve point (x,y) */ |
| typedef enum { |
| /** the point is encoded as z||x, where the octet z specifies |
| * which solution of the quadratic equation y is */ |
| POINT_CONVERSION_COMPRESSED = 2, |
| /** the point is encoded as z||x||y, where z is the octet 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; |
| |
| typedef struct ec_method_st EC_METHOD; |
| 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) */ |
| /********************************************************************/ |
| |
| /** Returns the basic GFp ec methods which provides the basis for the |
| * optimized methods. |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_simple_method(void); |
| |
| /** Returns GFp methods using montgomery multiplication. |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_mont_method(void); |
| |
| /** Returns GFp methods using optimized methods for NIST recommended curves |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_nist_method(void); |
| |
| # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 |
| /** Returns 64-bit optimized methods for nistp224 |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_nistp224_method(void); |
| |
| /** Returns 64-bit optimized methods for nistp256 |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_nistp256_method(void); |
| |
| /** Returns 64-bit optimized methods for nistp521 |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GFp_nistp521_method(void); |
| # endif |
| |
| # ifndef OPENSSL_NO_EC2M |
| /********************************************************************/ |
| /* EC_METHOD for curves over GF(2^m) */ |
| /********************************************************************/ |
| |
| /** Returns the basic GF2m ec method |
| * \return EC_METHOD object |
| */ |
| const EC_METHOD *EC_GF2m_simple_method(void); |
| |
| # endif |
| |
| /********************************************************************/ |
| /* EC_GROUP functions */ |
| /********************************************************************/ |
| |
| /** Creates a new EC_GROUP object |
| * \param meth EC_METHOD to use |
| * \return newly created EC_GROUP object or NULL in case of an error. |
| */ |
| EC_GROUP *EC_GROUP_new(const EC_METHOD *meth); |
| |
| /** Frees a EC_GROUP object |
| * \param group EC_GROUP object to be freed. |
| */ |
| void EC_GROUP_free(EC_GROUP *group); |
| |
| /** Clears and frees a EC_GROUP object |
| * \param group EC_GROUP object to be cleared and freed. |
| */ |
| void EC_GROUP_clear_free(EC_GROUP *group); |
| |
| /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD. |
| * \param dst destination EC_GROUP object |
| * \param src source EC_GROUP object |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src); |
| |
| /** Creates a new EC_GROUP object and copies the copies the content |
| * form src to the newly created EC_KEY object |
| * \param src source EC_GROUP object |
| * \return newly created EC_GROUP object or NULL in case of an error. |
| */ |
| EC_GROUP *EC_GROUP_dup(const EC_GROUP *src); |
| |
| /** Returns the EC_METHOD of the EC_GROUP object. |
| * \param group EC_GROUP object |
| * \return EC_METHOD used in this EC_GROUP object. |
| */ |
| const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group); |
| |
| /** Returns the field type of the EC_METHOD. |
| * \param meth EC_METHOD object |
| * \return NID of the underlying field type OID. |
| */ |
| int EC_METHOD_get_field_type(const EC_METHOD *meth); |
| |
| /** Sets the generator and it's order/cofactor of a EC_GROUP object. |
| * \param group EC_GROUP object |
| * \param generator EC_POINT object with the generator. |
| * \param order the order of the group generated by the generator. |
| * \param cofactor the index of the sub-group generated by the generator |
| * in the group of all points on the elliptic curve. |
| * \return 1 on success and 0 if an error 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); |
| |
| void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag); |
| int EC_GROUP_get_asn1_flag(const EC_GROUP *group); |
| |
| void EC_GROUP_set_point_conversion_form(EC_GROUP *group, |
| point_conversion_form_t form); |
| point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *); |
| |
| unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x); |
| size_t EC_GROUP_get_seed_len(const EC_GROUP *); |
| size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len); |
| |
| /** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b |
| * \param group EC_GROUP object |
| * \param p BIGNUM with the prime number |
| * \param a BIGNUM with parameter a of the equation |
| * \param b BIGNUM with parameter b of the equation |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, |
| const BIGNUM *b, BN_CTX *ctx); |
| |
| /** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b |
| * \param group EC_GROUP object |
| * \param p BIGNUM for the prime number |
| * \param a BIGNUM for parameter a of the equation |
| * \param b BIGNUM for parameter b of the equation |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, |
| BIGNUM *b, BN_CTX *ctx); |
| |
| # ifndef OPENSSL_NO_EC2M |
| /** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b |
| * \param group EC_GROUP object |
| * \param p BIGNUM with the polynomial defining the underlying field |
| * \param a BIGNUM with parameter a of the equation |
| * \param b BIGNUM with parameter b of the equation |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, |
| const BIGNUM *b, BN_CTX *ctx); |
| |
| /** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b |
| * \param group EC_GROUP object |
| * \param p BIGNUM for the polynomial defining the underlying field |
| * \param a BIGNUM for parameter a of the equation |
| * \param b BIGNUM for parameter b of the equation |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, |
| BIGNUM *b, BN_CTX *ctx); |
| # endif |
| /** Returns the number of bits needed to represent a field element |
| * \param group EC_GROUP object |
| * \return number of bits needed to represent a field element |
| */ |
| int EC_GROUP_get_degree(const EC_GROUP *group); |
| |
| /** Checks whether the parameter in the EC_GROUP define a valid ec group |
| * \param group EC_GROUP object |
| * \param ctx BN_CTX object (optional) |
| * \return 1 if group is a valid ec group and 0 otherwise |
| */ |
| int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx); |
| |
| /** Checks whether the discriminant of the elliptic curve is zero or not |
| * \param group EC_GROUP object |
| * \param ctx BN_CTX object (optional) |
| * \return 1 if the discriminant is not zero and 0 otherwise |
| */ |
| int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx); |
| |
| /** Compares two EC_GROUP objects |
| * \param a first EC_GROUP object |
| * \param b second EC_GROUP object |
| * \param ctx BN_CTX object (optional) |
| * \return 0 if 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 a NID |
| * \param nid NID of the OID of the curve name |
| * \return newly created EC_GROUP object with specified curve or NULL |
| * if an error occurred |
| */ |
| EC_GROUP *EC_GROUP_new_by_curve_name(int nid); |
| |
| /** 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); |
| |
| /********************************************************************/ |
| /* 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); |
| |
| /** Returns the EC_METHOD used in EC_POINT object |
| * \param point EC_POINT object |
| * \return the EC_METHOD used |
| */ |
| const EC_METHOD *EC_POINT_method_of(const EC_POINT *point); |
| |
| /** Sets a point to infinity (neutral element) |
| * \param group underlying EC_GROUP object |
| * \param point EC_POINT to set to infinity |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); |
| |
| /** Sets the jacobian projective coordinates of a EC_POINT over GFp |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM with the x-coordinate |
| * \param y BIGNUM with the y-coordinate |
| * \param z BIGNUM with the z-coordinate |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| 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 |
| */ |
| int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, |
| const EC_POINT *p, BIGNUM *x, |
| BIGNUM *y, BIGNUM *z, |
| BN_CTX *ctx); |
| |
| /** Sets the affine coordinates of a EC_POINT over GFp |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM with the x-coordinate |
| * \param y BIGNUM with the y-coordinate |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p, |
| const BIGNUM *x, const BIGNUM *y, |
| BN_CTX *ctx); |
| |
| /** Gets the affine coordinates of a EC_POINT over GFp |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM for the x-coordinate |
| * \param y BIGNUM for the y-coordinate |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, |
| const EC_POINT *p, BIGNUM *x, |
| BIGNUM *y, BN_CTX *ctx); |
| |
| /** Sets the x9.62 compressed coordinates of a EC_POINT over GFp |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM with x-coordinate |
| * \param y_bit integer with the y-Bit (either 0 or 1) |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, |
| EC_POINT *p, const BIGNUM *x, |
| int y_bit, BN_CTX *ctx); |
| # ifndef OPENSSL_NO_EC2M |
| /** Sets the affine coordinates of a EC_POINT over GF2m |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM with the x-coordinate |
| * \param y BIGNUM with the y-coordinate |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p, |
| const BIGNUM *x, const BIGNUM *y, |
| BN_CTX *ctx); |
| |
| /** Gets the affine coordinates of a EC_POINT over GF2m |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM for the x-coordinate |
| * \param y BIGNUM for the y-coordinate |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, |
| const EC_POINT *p, BIGNUM *x, |
| BIGNUM *y, BN_CTX *ctx); |
| |
| /** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param x BIGNUM with x-coordinate |
| * \param y_bit integer with the y-Bit (either 0 or 1) |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, |
| EC_POINT *p, const BIGNUM *x, |
| int y_bit, BN_CTX *ctx); |
| # endif |
| /** Encodes a EC_POINT object to a octet string |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param form point conversion form |
| * \param buf memory buffer for the result. If NULL the function returns |
| * required buffer size. |
| * \param len length of the memory buffer |
| * \param ctx BN_CTX object (optional) |
| * \return the length of the encoded octet string or 0 if an error occurred |
| */ |
| size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, |
| point_conversion_form_t form, |
| unsigned char *buf, size_t len, BN_CTX *ctx); |
| |
| /** Decodes a EC_POINT from a octet string |
| * \param group underlying EC_GROUP object |
| * \param p EC_POINT object |
| * \param buf memory buffer with the encoded ec point |
| * \param len length of the encoded ec point |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error 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: */ |
| BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *, |
| point_conversion_form_t form, BIGNUM *, BN_CTX *); |
| EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *, |
| EC_POINT *, BN_CTX *); |
| char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *, |
| point_conversion_form_t form, BN_CTX *); |
| EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *, |
| EC_POINT *, BN_CTX *); |
| |
| /********************************************************************/ |
| /* functions for doing EC_POINT arithmetic */ |
| /********************************************************************/ |
| |
| /** Computes the sum of two EC_POINT |
| * \param group underlying EC_GROUP object |
| * \param r EC_POINT object for the result (r = a + b) |
| * \param a EC_POINT object with the first summand |
| * \param b EC_POINT object with the second summand |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error 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); |
| |
| int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx); |
| int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, |
| EC_POINT *points[], BN_CTX *ctx); |
| |
| /** Computes r = generator * n + sum_{i=0}^{num-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 |
| */ |
| int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, |
| size_t num, const EC_POINT *p[], const BIGNUM *m[], |
| BN_CTX *ctx); |
| |
| /** Computes r = generator * n + q * m |
| * \param group underlying EC_GROUP object |
| * \param r EC_POINT object for the result |
| * \param n BIGNUM with the multiplier for the group generator (optional) |
| * \param q EC_POINT object with the first factor of the second summand |
| * \param m BIGNUM with the second factor of the second summand |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error 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); |
| |
| /** 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 |
| */ |
| int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx); |
| |
| /** Reports whether a precomputation has been done |
| * \param group EC_GROUP object |
| * \return 1 if a pre-computation has been done and 0 otherwise |
| */ |
| int EC_GROUP_have_precompute_mult(const EC_GROUP *group); |
| |
| /********************************************************************/ |
| /* ASN1 stuff */ |
| /********************************************************************/ |
| |
| 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 |
| |
| # define OPENSSL_EC_EXPLICIT_CURVE 0x000 |
| # define OPENSSL_EC_NAMED_CURVE 0x001 |
| |
| EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len); |
| int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out); |
| |
| # define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x) |
| # define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x) |
| # define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \ |
| (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x)) |
| # define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \ |
| (unsigned char *)(x)) |
| |
| int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off); |
| # ifndef OPENSSL_NO_STDIO |
| int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off); |
| # endif |
| |
| /********************************************************************/ |
| /* 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_NON_FIPS_ALLOW 0x1 |
| # define EC_FLAG_FIPS_CHECKED 0x2 |
| # define EC_FLAG_COFACTOR_ECDH 0x1000 |
| |
| /** Creates a new EC_KEY object. |
| * \return EC_KEY object or NULL if an error occurred. |
| */ |
| EC_KEY *EC_KEY_new(void); |
| |
| int EC_KEY_get_flags(const EC_KEY *key); |
| |
| void EC_KEY_set_flags(EC_KEY *key, int flags); |
| |
| void EC_KEY_clear_flags(EC_KEY *key, int flags); |
| |
| /** Creates a new EC_KEY object using a named curve as underlying |
| * EC_GROUP object. |
| * \param nid NID of the named curve. |
| * \return EC_KEY object or NULL if an error occurred. |
| */ |
| EC_KEY *EC_KEY_new_by_curve_name(int nid); |
| |
| /** Frees a EC_KEY object. |
| * \param key EC_KEY object to be freed. |
| */ |
| void EC_KEY_free(EC_KEY *key); |
| |
| /** Copies a EC_KEY object. |
| * \param dst destination EC_KEY object |
| * \param src src EC_KEY object |
| * \return dst or NULL if an error occurred. |
| */ |
| EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src); |
| |
| /** Creates a new EC_KEY object and copies the content from src to it. |
| * \param src the source EC_KEY object |
| * \return newly created EC_KEY object or NULL if an error occurred. |
| */ |
| EC_KEY *EC_KEY_dup(const EC_KEY *src); |
| |
| /** Increases the internal reference count of a EC_KEY object. |
| * \param key EC_KEY object |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_up_ref(EC_KEY *key); |
| |
| /** Returns the ENGINE object of a EC_KEY object |
| * \param eckey EC_KEY object |
| * \return the ENGINE object (possibly NULL). |
| */ |
| 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). |
| */ |
| const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key); |
| |
| /** Sets the EC_GROUP of a EC_KEY object. |
| * \param key EC_KEY object |
| * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY |
| * object will use an own copy of the EC_GROUP). |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group); |
| |
| /** Returns the private key of a EC_KEY object. |
| * \param key EC_KEY object |
| * \return a BIGNUM with the private key (possibly NULL). |
| */ |
| const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key); |
| |
| /** Sets the private key of a EC_KEY object. |
| * \param key EC_KEY object |
| * \param prv BIGNUM with the private key (note: the EC_KEY object |
| * will use an own copy of the BIGNUM). |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv); |
| |
| /** Returns the public key of a EC_KEY object. |
| * \param key the EC_KEY object |
| * \return a EC_POINT object with the public key (possibly NULL) |
| */ |
| const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key); |
| |
| /** Sets the public key of a EC_KEY object. |
| * \param key EC_KEY object |
| * \param pub EC_POINT object with the public key (note: the EC_KEY object |
| * will use an own copy of the EC_POINT object). |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub); |
| |
| unsigned EC_KEY_get_enc_flags(const EC_KEY *key); |
| void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); |
| point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key); |
| void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform); |
| |
| #define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \ |
| CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef) |
| int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg); |
| void *EC_KEY_get_ex_data(const EC_KEY *key, int idx); |
| |
| /* wrapper functions for the underlying EC_GROUP object */ |
| void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag); |
| |
| /** Creates a table of pre-computed multiples of the generator to |
| * accelerate further EC_KEY operations. |
| * \param key EC_KEY object |
| * \param ctx BN_CTX object (optional) |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx); |
| |
| /** Creates a new ec private (and optional a new public) key. |
| * \param key EC_KEY object |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int EC_KEY_generate_key(EC_KEY *key); |
| |
| /** Verifies that a private and/or public key is valid. |
| * \param key the EC_KEY object |
| * \return 1 on success and 0 otherwise. |
| */ |
| int EC_KEY_check_key(const EC_KEY *key); |
| |
| /** 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. |
| */ |
| 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. |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| |
| 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 |
| */ |
| |
| 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 |
| */ |
| |
| 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 |
| */ |
| 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. |
| */ |
| EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len); |
| |
| /** Encodes a private key object and stores the result in a buffer. |
| * \param key the EC_KEY object to encode |
| * \param out the buffer for the result (if NULL the function returns number |
| * of bytes needed). |
| * \return 1 on success and 0 if an error occurred. |
| */ |
| int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out); |
| |
| /********************************************************************/ |
| /* de- and encoding functions for EC parameters */ |
| /********************************************************************/ |
| |
| /** Decodes ec parameter from a memory buffer. |
| * \param key a pointer to a EC_KEY object which should be used (or NULL) |
| * \param in pointer to memory with the DER encoded ec parameters |
| * \param len length of the DER encoded ec parameters |
| * \return a EC_KEY object with the decoded parameters or NULL if an error |
| * occurred. |
| */ |
| EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len); |
| |
| /** Encodes ec parameter and stores the result in a buffer. |
| * \param key the EC_KEY object with ec 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. |
| */ |
| int i2d_ECParameters(EC_KEY *key, unsigned char **out); |
| |
| /********************************************************************/ |
| /* de- and encoding functions for EC public key */ |
| /* (octet string, not DER -- hence 'o2i' and 'i2o') */ |
| /********************************************************************/ |
| |
| /** Decodes a ec public key from a octet string. |
| * \param key a pointer to a EC_KEY object which should be used |
| * \param in memory buffer with the encoded public key |
| * \param len length of the encoded public key |
| * \return EC_KEY object with decoded public key or NULL if an error |
| * occurred. |
| */ |
| EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len); |
| |
| /** Encodes a ec public key in an octet string. |
| * \param key the EC_KEY object with the public key |
| * \param out the buffer for the result (if NULL the function returns number |
| * of bytes needed). |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out); |
| |
| /** Prints out the ec parameters on human readable form. |
| * \param bp BIO object to which the information is printed |
| * \param key EC_KEY object |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int ECParameters_print(BIO *bp, const EC_KEY *key); |
| |
| /** Prints out the contents of a EC_KEY object |
| * \param bp BIO object to which the information is printed |
| * \param key EC_KEY object |
| * \param off line offset |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_KEY_print(BIO *bp, const EC_KEY *key, int off); |
| |
| # 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 |
| */ |
| int ECParameters_print_fp(FILE *fp, const EC_KEY *key); |
| |
| /** Prints out the contents of a EC_KEY object |
| * \param fp file descriptor to which the information is printed |
| * \param key EC_KEY object |
| * \param off line offset |
| * \return 1 on success and 0 if an error occurred |
| */ |
| int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); |
| |
| # endif |
| |
| const EC_KEY_METHOD *EC_KEY_OpenSSL(void); |
| const EC_KEY_METHOD *EC_KEY_get_default_method(void); |
| void EC_KEY_set_default_method(const EC_KEY_METHOD *meth); |
| const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key); |
| int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth); |
| EC_KEY *EC_KEY_new_method(ENGINE *engine); |
| |
| 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); |
| |
| 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)); |
| |
| 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); |
| |
| /** DER encode content of ECDSA_SIG object (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 0 |
| */ |
| int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp); |
| |
| /** Decodes a DER encoded ECDSA signature (note: this function changes *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) |
| */ |
| ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len); |
| |
| /** 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 (may be NULL) |
| * \param s pointer to BIGNUM for s (may be NULL) |
| */ |
| int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s); |
| |
| /** 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| 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 |
| */ |
| int ECDSA_size(const EC_KEY *eckey); |
| |
| /********************************************************************/ |
| /* EC_KEY_METHOD constructors, destructors, writers and accessors */ |
| /********************************************************************/ |
| |
| EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth); |
| void EC_KEY_METHOD_free(EC_KEY_METHOD *meth); |
| void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth, |
| int (*init)(EC_KEY *key), |
| void (*finish)(EC_KEY *key), |
| int (*copy)(EC_KEY *dest, const EC_KEY *src), |
| int (*set_group)(EC_KEY *key, const EC_GROUP *grp), |
| int (*set_private)(EC_KEY *key, |
| const BIGNUM *priv_key), |
| int (*set_public)(EC_KEY *key, |
| const EC_POINT *pub_key)); |
| |
| void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth, |
| int (*keygen)(EC_KEY *key)); |
| |
| void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth, |
| int (*ckey)(unsigned char **psec, |
| size_t *pseclen, |
| const EC_POINT *pub_key, |
| const EC_KEY *ecdh)); |
| |
| 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)); |
| |
| 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)); |
| |
| void EC_KEY_METHOD_get_init(const EC_KEY_METHOD *meth, |
| int (**pinit)(EC_KEY *key), |
| void (**pfinish)(EC_KEY *key), |
| int (**pcopy)(EC_KEY *dest, const EC_KEY *src), |
| int (**pset_group)(EC_KEY *key, |
| const EC_GROUP *grp), |
| int (**pset_private)(EC_KEY *key, |
| const BIGNUM *priv_key), |
| int (**pset_public)(EC_KEY *key, |
| const EC_POINT *pub_key)); |
| |
| void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth, |
| int (**pkeygen)(EC_KEY *key)); |
| |
| void EC_KEY_METHOD_get_compute_key(const EC_KEY_METHOD *meth, |
| int (**pck)(unsigned char **psec, |
| size_t *pseclen, |
| const EC_POINT *pub_key, |
| const EC_KEY *ecdh)); |
| |
| 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)); |
| |
| 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)); |
| |
| # 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 |
| |
| # define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \ |
| EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL) |
| |
| # define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \ |
| EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL) |
| |
| # define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL) |
| |
| # define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL) |
| |
| # define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL) |
| |
| # define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL) |
| |
| # define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)(md)) |
| |
| # define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)(pmd)) |
| |
| # define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL) |
| |
| # define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, \ |
| (void *)(plen)) |
| |
| # define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)(p)) |
| |
| # define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \ |
| EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ |
| EVP_PKEY_OP_DERIVE, \ |
| EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)(p)) |
| |
| # 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_62 2 |
| |
| |
| # ifdef __cplusplus |
| } |
| # endif |
| # endif |
| #endif |
