1# This file is dual licensed under the terms of the Apache License, Version
2# 2.0, and the BSD License. See the LICENSE file in the root of this repository
3# for complete details.
4
5from __future__ import absolute_import, division, print_function
6
7INCLUDES = """
8#include <openssl/ec.h>
9#include <openssl/obj_mac.h>
10"""
11
12TYPES = """
13static const int Cryptography_HAS_EC;
14static const int Cryptography_HAS_EC2M;
15static const int Cryptography_HAS_EC_1_0_2;
16
17static const int OPENSSL_EC_NAMED_CURVE;
18
19typedef ... EC_KEY;
20typedef ... EC_GROUP;
21typedef ... EC_POINT;
22typedef ... EC_METHOD;
23typedef struct {
24    int nid;
25    const char *comment;
26} EC_builtin_curve;
27typedef enum {
28    POINT_CONVERSION_COMPRESSED,
29    POINT_CONVERSION_UNCOMPRESSED,
30    ...
31} point_conversion_form_t;
32"""
33
34FUNCTIONS = """
35void EC_GROUP_free(EC_GROUP *);
36
37EC_GROUP *EC_GROUP_new_by_curve_name(int);
38
39int EC_GROUP_get_degree(const EC_GROUP *);
40
41const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
42const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *);
43int EC_GROUP_get_curve_name(const EC_GROUP *);
44
45size_t EC_get_builtin_curves(EC_builtin_curve *, size_t);
46
47EC_KEY *EC_KEY_new(void);
48void EC_KEY_free(EC_KEY *);
49
50EC_KEY *EC_KEY_new_by_curve_name(int);
51const EC_GROUP *EC_KEY_get0_group(const EC_KEY *);
52int EC_GROUP_get_order(const EC_GROUP *, BIGNUM *, BN_CTX *);
53int EC_KEY_set_group(EC_KEY *, const EC_GROUP *);
54const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *);
55int EC_KEY_set_private_key(EC_KEY *, const BIGNUM *);
56const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *);
57int EC_KEY_set_public_key(EC_KEY *, const EC_POINT *);
58void EC_KEY_set_asn1_flag(EC_KEY *, int);
59int EC_KEY_generate_key(EC_KEY *);
60int EC_KEY_set_public_key_affine_coordinates(EC_KEY *, BIGNUM *, BIGNUM *);
61
62EC_POINT *EC_POINT_new(const EC_GROUP *);
63void EC_POINT_free(EC_POINT *);
64void EC_POINT_clear_free(EC_POINT *);
65EC_POINT *EC_POINT_dup(const EC_POINT *, const EC_GROUP *);
66
67int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *, EC_POINT *,
68    const BIGNUM *, const BIGNUM *, BN_CTX *);
69
70int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *,
71    const EC_POINT *, BIGNUM *, BIGNUM *, BN_CTX *);
72
73int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *, EC_POINT *,
74    const BIGNUM *, int, BN_CTX *);
75
76int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *, EC_POINT *,
77    const BIGNUM *, const BIGNUM *, BN_CTX *);
78
79int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *,
80    const EC_POINT *, BIGNUM *, BIGNUM *, BN_CTX *);
81
82int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *, EC_POINT *,
83    const BIGNUM *, int, BN_CTX *);
84
85size_t EC_POINT_point2oct(const EC_GROUP *, const EC_POINT *,
86    point_conversion_form_t,
87    unsigned char *, size_t, BN_CTX *);
88
89int EC_POINT_oct2point(const EC_GROUP *, EC_POINT *,
90    const unsigned char *, size_t, BN_CTX *);
91
92int EC_POINT_add(const EC_GROUP *, EC_POINT *, const EC_POINT *,
93    const EC_POINT *, BN_CTX *);
94
95int EC_POINT_dbl(const EC_GROUP *, EC_POINT *, const EC_POINT *, BN_CTX *);
96int EC_POINT_invert(const EC_GROUP *, EC_POINT *, BN_CTX *);
97int EC_POINT_is_at_infinity(const EC_GROUP *, const EC_POINT *);
98int EC_POINT_is_on_curve(const EC_GROUP *, const EC_POINT *, BN_CTX *);
99
100int EC_POINT_cmp(
101    const EC_GROUP *, const EC_POINT *, const EC_POINT *, BN_CTX *);
102
103int EC_POINT_mul(const EC_GROUP *, EC_POINT *, const BIGNUM *,
104    const EC_POINT *, const BIGNUM *, BN_CTX *);
105
106int EC_METHOD_get_field_type(const EC_METHOD *);
107
108const char *EC_curve_nid2nist(int);
109"""
110
111CUSTOMIZATIONS = """
112static const long Cryptography_HAS_EC = 1;
113
114#if defined(OPENSSL_NO_EC2M)
115static const long Cryptography_HAS_EC2M = 0;
116
117int (*EC_POINT_set_affine_coordinates_GF2m)(const EC_GROUP *, EC_POINT *,
118    const BIGNUM *, const BIGNUM *, BN_CTX *) = NULL;
119
120int (*EC_POINT_get_affine_coordinates_GF2m)(const EC_GROUP *,
121    const EC_POINT *, BIGNUM *, BIGNUM *, BN_CTX *) = NULL;
122
123int (*EC_POINT_set_compressed_coordinates_GF2m)(const EC_GROUP *, EC_POINT *,
124    const BIGNUM *, int, BN_CTX *) = NULL;
125#else
126static const long Cryptography_HAS_EC2M = 1;
127#endif
128
129#if (!CRYPTOGRAPHY_IS_LIBRESSL && CRYPTOGRAPHY_OPENSSL_LESS_THAN_102)
130static const long Cryptography_HAS_EC_1_0_2 = 0;
131const char *(*EC_curve_nid2nist)(int) = NULL;
132#else
133static const long Cryptography_HAS_EC_1_0_2 = 1;
134#endif
135"""
136