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35b73a1f | 1 | /* |
33388b44 | 2 | * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved. |
aa8f3d76 | 3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
6cc5e19d | 4 | * |
48f4ad77 | 5 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
21dcbebc RS |
6 | * this file except in compliance with the License. You can obtain a copy |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
6cc5e19d | 9 | */ |
21dcbebc | 10 | |
ae4186b0 DMSP |
11 | #ifndef OPENSSL_EC_H |
12 | # define OPENSSL_EC_H | |
d86167ec DMSP |
13 | # pragma once |
14 | ||
15 | # include <openssl/macros.h> | |
936c2b9e | 16 | # ifndef OPENSSL_NO_DEPRECATED_3_0 |
d86167ec DMSP |
17 | # define HEADER_EC_H |
18 | # endif | |
6cc5e19d | 19 | |
0f113f3e | 20 | # include <openssl/opensslconf.h> |
87c9c659 | 21 | |
3c27208f | 22 | # ifndef OPENSSL_NO_EC |
ee8db22e P |
23 | # include <openssl/asn1.h> |
24 | # include <openssl/symhacks.h> | |
25 | # ifndef OPENSSL_NO_DEPRECATED_1_1_0 | |
26 | # include <openssl/bn.h> | |
27 | # endif | |
28 | # include <openssl/ecerr.h> | |
29 | # ifdef __cplusplus | |
65e81670 | 30 | extern "C" { |
ee8db22e | 31 | # endif |
6cc5e19d | 32 | |
ee8db22e P |
33 | # ifndef OPENSSL_ECC_MAX_FIELD_BITS |
34 | # define OPENSSL_ECC_MAX_FIELD_BITS 661 | |
35 | # endif | |
5e3225cc | 36 | |
ba12070f NL |
37 | /** Enum for the point conversion form as defined in X9.62 (ECDSA) |
38 | * for the encoding of a elliptic curve point (x,y) */ | |
3a12ce01 | 39 | typedef enum { |
0f113f3e | 40 | /** the point is encoded as z||x, where the octet z specifies |
ba12070f | 41 | * which solution of the quadratic equation y is */ |
0f113f3e | 42 | POINT_CONVERSION_COMPRESSED = 2, |
91d2728b | 43 | /** the point is encoded as z||x||y, where z is the octet 0x04 */ |
0f113f3e MC |
44 | POINT_CONVERSION_UNCOMPRESSED = 4, |
45 | /** the point is encoded as z||x||y, where the octet z specifies | |
46 | * which solution of the quadratic equation y is */ | |
47 | POINT_CONVERSION_HYBRID = 6 | |
3a12ce01 BM |
48 | } point_conversion_form_t; |
49 | ||
c0f39ded | 50 | # include <openssl/params.h> |
23ccae80 | 51 | # ifndef OPENSSL_NO_DEPRECATED_3_0 |
3a12ce01 | 52 | typedef struct ec_method_st EC_METHOD; |
23ccae80 | 53 | # endif |
60b350a3 | 54 | typedef struct ec_group_st EC_GROUP; |
3a12ce01 | 55 | typedef struct ec_point_st EC_POINT; |
60b350a3 RS |
56 | typedef struct ecpk_parameters_st ECPKPARAMETERS; |
57 | typedef struct ec_parameters_st ECPARAMETERS; | |
3a12ce01 | 58 | |
ba12070f | 59 | /********************************************************************/ |
0f113f3e | 60 | /* EC_METHODs for curves over GF(p) */ |
ba12070f NL |
61 | /********************************************************************/ |
62 | ||
63 | /** Returns the basic GFp ec methods which provides the basis for the | |
0f113f3e | 64 | * optimized methods. |
ba12070f | 65 | * \return EC_METHOD object |
3a12ce01 | 66 | */ |
23ccae80 | 67 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_simple_method(void)) |
ba12070f NL |
68 | |
69 | /** Returns GFp methods using montgomery multiplication. | |
70 | * \return EC_METHOD object | |
71 | */ | |
23ccae80 | 72 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_mont_method(void)) |
ba12070f NL |
73 | |
74 | /** Returns GFp methods using optimized methods for NIST recommended curves | |
75 | * \return EC_METHOD object | |
76 | */ | |
23ccae80 | 77 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_nist_method(void)) |
3a12ce01 | 78 | |
ee8db22e | 79 | # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 |
04daec86 BM |
80 | /** Returns 64-bit optimized methods for nistp224 |
81 | * \return EC_METHOD object | |
82 | */ | |
23ccae80 | 83 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_nistp224_method(void)) |
3e00b4c9 BM |
84 | |
85 | /** Returns 64-bit optimized methods for nistp256 | |
86 | * \return EC_METHOD object | |
87 | */ | |
23ccae80 | 88 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_nistp256_method(void)) |
3e00b4c9 BM |
89 | |
90 | /** Returns 64-bit optimized methods for nistp521 | |
91 | * \return EC_METHOD object | |
92 | */ | |
23ccae80 | 93 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GFp_nistp521_method(void)) |
ee8db22e | 94 | # endif |
ba12070f | 95 | |
ee8db22e | 96 | # ifndef OPENSSL_NO_EC2M |
0f113f3e | 97 | /********************************************************************/ |
ba12070f NL |
98 | /* EC_METHOD for curves over GF(2^m) */ |
99 | /********************************************************************/ | |
100 | ||
0f113f3e | 101 | /** Returns the basic GF2m ec method |
ba12070f | 102 | * \return EC_METHOD object |
7793f30e | 103 | */ |
23ccae80 | 104 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GF2m_simple_method(void)) |
7793f30e | 105 | |
ee8db22e | 106 | # endif |
3a12ce01 | 107 | |
ba12070f NL |
108 | /********************************************************************/ |
109 | /* EC_GROUP functions */ | |
110 | /********************************************************************/ | |
111 | ||
a9612d6c MC |
112 | /** |
113 | * Creates a new EC_GROUP object | |
a9612d6c | 114 | * \param meth EC_METHOD to use |
ba12070f NL |
115 | * \return newly created EC_GROUP object or NULL in case of an error. |
116 | */ | |
23ccae80 | 117 | DEPRECATEDIN_3_0(EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)) |
ba12070f NL |
118 | |
119 | /** Frees a EC_GROUP object | |
120 | * \param group EC_GROUP object to be freed. | |
121 | */ | |
122 | void EC_GROUP_free(EC_GROUP *group); | |
123 | ||
124 | /** Clears and frees a EC_GROUP object | |
125 | * \param group EC_GROUP object to be cleared and freed. | |
126 | */ | |
936c2b9e | 127 | DEPRECATEDIN_3_0(void EC_GROUP_clear_free(EC_GROUP *group)) |
ba12070f NL |
128 | |
129 | /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD. | |
130 | * \param dst destination EC_GROUP object | |
131 | * \param src source EC_GROUP object | |
132 | * \return 1 on success and 0 if an error occurred. | |
133 | */ | |
134 | int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src); | |
135 | ||
9fdcc21f | 136 | /** Creates a new EC_GROUP object and copies the content |
ba12070f NL |
137 | * form src to the newly created EC_KEY object |
138 | * \param src source EC_GROUP object | |
139 | * \return newly created EC_GROUP object or NULL in case of an error. | |
140 | */ | |
141 | EC_GROUP *EC_GROUP_dup(const EC_GROUP *src); | |
142 | ||
143 | /** Returns the EC_METHOD of the EC_GROUP object. | |
0f113f3e | 144 | * \param group EC_GROUP object |
ba12070f NL |
145 | * \return EC_METHOD used in this EC_GROUP object. |
146 | */ | |
23ccae80 | 147 | DEPRECATEDIN_3_0(const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group)) |
ba12070f NL |
148 | |
149 | /** Returns the field type of the EC_METHOD. | |
150 | * \param meth EC_METHOD object | |
151 | * \return NID of the underlying field type OID. | |
152 | */ | |
23ccae80 | 153 | DEPRECATEDIN_3_0(int EC_METHOD_get_field_type(const EC_METHOD *meth)) |
ba12070f | 154 | |
68756b12 | 155 | /** Sets the generator and its order/cofactor of a EC_GROUP object. |
0f113f3e | 156 | * \param group EC_GROUP object |
ba12070f NL |
157 | * \param generator EC_POINT object with the generator. |
158 | * \param order the order of the group generated by the generator. | |
159 | * \param cofactor the index of the sub-group generated by the generator | |
160 | * in the group of all points on the elliptic curve. | |
478b50cf | 161 | * \return 1 on success and 0 if an error occurred |
ba12070f | 162 | */ |
0f113f3e MC |
163 | int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, |
164 | const BIGNUM *order, const BIGNUM *cofactor); | |
ba12070f NL |
165 | |
166 | /** Returns the generator of a EC_GROUP object. | |
167 | * \param group EC_GROUP object | |
168 | * \return the currently used generator (possibly NULL). | |
169 | */ | |
170 | const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group); | |
171 | ||
f54be179 AP |
172 | /** Returns the montgomery data for order(Generator) |
173 | * \param group EC_GROUP object | |
14f46560 | 174 | * \return the currently used montgomery data (possibly NULL). |
f54be179 AP |
175 | */ |
176 | BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group); | |
177 | ||
ba12070f NL |
178 | /** Gets the order of a EC_GROUP |
179 | * \param group EC_GROUP object | |
180 | * \param order BIGNUM to which the order is copied | |
a773b52a | 181 | * \param ctx unused |
478b50cf | 182 | * \return 1 on success and 0 if an error occurred |
ba12070f NL |
183 | */ |
184 | int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx); | |
48fe4d62 | 185 | |
be2e334f DSH |
186 | /** Gets the order of an EC_GROUP |
187 | * \param group EC_GROUP object | |
188 | * \return the group order | |
189 | */ | |
be2e334f DSH |
190 | const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group); |
191 | ||
8483a003 | 192 | /** Gets the number of bits of the order of an EC_GROUP |
be2e334f DSH |
193 | * \param group EC_GROUP object |
194 | * \return number of bits of group order. | |
195 | */ | |
be2e334f DSH |
196 | int EC_GROUP_order_bits(const EC_GROUP *group); |
197 | ||
ba12070f NL |
198 | /** Gets the cofactor of a EC_GROUP |
199 | * \param group EC_GROUP object | |
200 | * \param cofactor BIGNUM to which the cofactor is copied | |
a773b52a | 201 | * \param ctx unused |
478b50cf | 202 | * \return 1 on success and 0 if an error occurred |
ba12070f | 203 | */ |
0f113f3e MC |
204 | int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, |
205 | BN_CTX *ctx); | |
b6db386f | 206 | |
be2e334f DSH |
207 | /** Gets the cofactor of an EC_GROUP |
208 | * \param group EC_GROUP object | |
209 | * \return the group cofactor | |
210 | */ | |
be2e334f DSH |
211 | const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group); |
212 | ||
ba12070f NL |
213 | /** Sets the name of a EC_GROUP object |
214 | * \param group EC_GROUP object | |
215 | * \param nid NID of the curve name OID | |
216 | */ | |
217 | void EC_GROUP_set_curve_name(EC_GROUP *group, int nid); | |
b6db386f | 218 | |
ba12070f NL |
219 | /** Returns the curve name of a EC_GROUP object |
220 | * \param group EC_GROUP object | |
221 | * \return NID of the curve name OID or 0 if not set. | |
222 | */ | |
223 | int EC_GROUP_get_curve_name(const EC_GROUP *group); | |
945e15a2 | 224 | |
fa1f0306 DA |
225 | /** Gets the field of an EC_GROUP |
226 | * \param group EC_GROUP object | |
227 | * \return the group field | |
228 | */ | |
229 | const BIGNUM *EC_GROUP_get0_field(const EC_GROUP *group); | |
230 | ||
23ccae80 BB |
231 | /** Returns the field type of the EC_GROUP. |
232 | * \param group EC_GROUP object | |
233 | * \return NID of the underlying field type OID. | |
234 | */ | |
235 | int EC_GROUP_get_field_type(const EC_GROUP *group); | |
236 | ||
ba12070f NL |
237 | void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag); |
238 | int EC_GROUP_get_asn1_flag(const EC_GROUP *group); | |
5f3d6f70 | 239 | |
0f113f3e MC |
240 | void EC_GROUP_set_point_conversion_form(EC_GROUP *group, |
241 | point_conversion_form_t form); | |
5f3d6f70 BM |
242 | point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *); |
243 | ||
9945b460 | 244 | unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x); |
5f3d6f70 BM |
245 | size_t EC_GROUP_get_seed_len(const EC_GROUP *); |
246 | size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len); | |
48fe4d62 | 247 | |
8e3cced7 MC |
248 | /** Sets the parameters of a ec curve defined by y^2 = x^3 + a*x + b (for GFp) |
249 | * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) | |
ba12070f | 250 | * \param group EC_GROUP object |
8e3cced7 MC |
251 | * \param p BIGNUM with the prime number (GFp) or the polynomial |
252 | * defining the underlying field (GF2m) | |
253 | * \param a BIGNUM with parameter a of the equation | |
254 | * \param b BIGNUM with parameter b of the equation | |
255 | * \param ctx BN_CTX object (optional) | |
256 | * \return 1 on success and 0 if an error occurred | |
257 | */ | |
258 | int EC_GROUP_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, | |
259 | const BIGNUM *b, BN_CTX *ctx); | |
260 | ||
261 | /** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp) | |
262 | * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) | |
263 | * \param group EC_GROUP object | |
264 | * \param p BIGNUM with the prime number (GFp) or the polynomial | |
265 | * defining the underlying field (GF2m) | |
266 | * \param a BIGNUM for parameter a of the equation | |
267 | * \param b BIGNUM for parameter b of the equation | |
268 | * \param ctx BN_CTX object (optional) | |
269 | * \return 1 on success and 0 if an error occurred | |
270 | */ | |
271 | int EC_GROUP_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, | |
272 | BN_CTX *ctx); | |
273 | ||
274 | /** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve | |
275 | * \param group EC_GROUP object | |
276 | * \param p BIGNUM with the prime number (GFp) or the polynomial | |
277 | * defining the underlying field (GF2m) | |
ba12070f NL |
278 | * \param a BIGNUM with parameter a of the equation |
279 | * \param b BIGNUM with parameter b of the equation | |
280 | * \param ctx BN_CTX object (optional) | |
478b50cf | 281 | * \return 1 on success and 0 if an error occurred |
ba12070f | 282 | */ |
936c2b9e | 283 | DEPRECATEDIN_3_0(int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, |
672f943a RL |
284 | const BIGNUM *a, const BIGNUM *b, |
285 | BN_CTX *ctx)) | |
ba12070f | 286 | |
8e3cced7 | 287 | /** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve |
ba12070f | 288 | * \param group EC_GROUP object |
8e3cced7 MC |
289 | * \param p BIGNUM with the prime number (GFp) or the polynomial |
290 | * defining the underlying field (GF2m) | |
ba12070f NL |
291 | * \param a BIGNUM for parameter a of the equation |
292 | * \param b BIGNUM for parameter b of the equation | |
293 | * \param ctx BN_CTX object (optional) | |
478b50cf | 294 | * \return 1 on success and 0 if an error occurred |
ba12070f | 295 | */ |
936c2b9e | 296 | DEPRECATEDIN_3_0(int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, |
672f943a RL |
297 | BIGNUM *a, BIGNUM *b, |
298 | BN_CTX *ctx)) | |
ba12070f | 299 | |
ee8db22e | 300 | # ifndef OPENSSL_NO_EC2M |
8e3cced7 | 301 | /** Sets the parameter of an ec curve. Synonym for EC_GROUP_set_curve |
ba12070f | 302 | * \param group EC_GROUP object |
8e3cced7 MC |
303 | * \param p BIGNUM with the prime number (GFp) or the polynomial |
304 | * defining the underlying field (GF2m) | |
ba12070f NL |
305 | * \param a BIGNUM with parameter a of the equation |
306 | * \param b BIGNUM with parameter b of the equation | |
307 | * \param ctx BN_CTX object (optional) | |
478b50cf | 308 | * \return 1 on success and 0 if an error occurred |
ba12070f | 309 | */ |
936c2b9e | 310 | DEPRECATEDIN_3_0(int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, |
672f943a RL |
311 | const BIGNUM *a, const BIGNUM *b, |
312 | BN_CTX *ctx)) | |
ba12070f | 313 | |
8e3cced7 | 314 | /** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve |
ba12070f | 315 | * \param group EC_GROUP object |
8e3cced7 MC |
316 | * \param p BIGNUM with the prime number (GFp) or the polynomial |
317 | * defining the underlying field (GF2m) | |
ba12070f NL |
318 | * \param a BIGNUM for parameter a of the equation |
319 | * \param b BIGNUM for parameter b of the equation | |
320 | * \param ctx BN_CTX object (optional) | |
478b50cf | 321 | * \return 1 on success and 0 if an error occurred |
ba12070f | 322 | */ |
936c2b9e | 323 | DEPRECATEDIN_3_0(int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, |
672f943a RL |
324 | BIGNUM *a, BIGNUM *b, |
325 | BN_CTX *ctx)) | |
ee8db22e | 326 | # endif |
0f113f3e | 327 | /** Returns the number of bits needed to represent a field element |
ba12070f NL |
328 | * \param group EC_GROUP object |
329 | * \return number of bits needed to represent a field element | |
330 | */ | |
331 | int EC_GROUP_get_degree(const EC_GROUP *group); | |
3a12ce01 | 332 | |
ba12070f NL |
333 | /** Checks whether the parameter in the EC_GROUP define a valid ec group |
334 | * \param group EC_GROUP object | |
335 | * \param ctx BN_CTX object (optional) | |
336 | * \return 1 if group is a valid ec group and 0 otherwise | |
337 | */ | |
af28dd6c | 338 | int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx); |
945e15a2 | 339 | |
ba12070f NL |
340 | /** Checks whether the discriminant of the elliptic curve is zero or not |
341 | * \param group EC_GROUP object | |
342 | * \param ctx BN_CTX object (optional) | |
343 | * \return 1 if the discriminant is not zero and 0 otherwise | |
344 | */ | |
345 | int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx); | |
346 | ||
347 | /** Compares two EC_GROUP objects | |
348 | * \param a first EC_GROUP object | |
349 | * \param b second EC_GROUP object | |
350 | * \param ctx BN_CTX object (optional) | |
14f46560 | 351 | * \return 0 if the groups are equal, 1 if not, or -1 on error |
ba12070f NL |
352 | */ |
353 | int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx); | |
ada0e717 | 354 | |
0f113f3e MC |
355 | /* |
356 | * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after | |
357 | * choosing an appropriate EC_METHOD | |
358 | */ | |
945e15a2 | 359 | |
ba12070f NL |
360 | /** Creates a new EC_GROUP object with the specified parameters defined |
361 | * over GFp (defined by the equation y^2 = x^3 + a*x + b) | |
362 | * \param p BIGNUM with the prime number | |
363 | * \param a BIGNUM with the parameter a of the equation | |
364 | * \param b BIGNUM with the parameter b of the equation | |
365 | * \param ctx BN_CTX object (optional) | |
366 | * \return newly created EC_GROUP object with the specified parameters | |
367 | */ | |
0f113f3e MC |
368 | EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, |
369 | const BIGNUM *b, BN_CTX *ctx); | |
ee8db22e | 370 | # ifndef OPENSSL_NO_EC2M |
ba12070f NL |
371 | /** Creates a new EC_GROUP object with the specified parameters defined |
372 | * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b) | |
373 | * \param p BIGNUM with the polynomial defining the underlying field | |
374 | * \param a BIGNUM with the parameter a of the equation | |
375 | * \param b BIGNUM with the parameter b of the equation | |
376 | * \param ctx BN_CTX object (optional) | |
377 | * \return newly created EC_GROUP object with the specified parameters | |
378 | */ | |
0f113f3e MC |
379 | EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a, |
380 | const BIGNUM *b, BN_CTX *ctx); | |
ee8db22e | 381 | # endif |
60b350a3 | 382 | |
c0f39ded SL |
383 | /** |
384 | * Creates a EC_GROUP object with a curve specified by parameters. | |
385 | * The parameters may be explicit or a named curve, | |
386 | * \param params A list of parameters describing the group. | |
387 | * \param libctx The associated library context or NULL for the default | |
388 | * context | |
389 | * \param propq A property query string | |
390 | * \return newly created EC_GROUP object with specified parameters or NULL | |
391 | * if an error occurred | |
392 | */ | |
393 | EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[], | |
394 | OPENSSL_CTX *libctx, const char *propq); | |
395 | ||
a9612d6c MC |
396 | /** |
397 | * Creates a EC_GROUP object with a curve specified by a NID | |
398 | * \param libctx The associated library context or NULL for the default | |
399 | * context | |
2da8d4eb | 400 | * \param propq A property query string |
a9612d6c MC |
401 | * \param nid NID of the OID of the curve name |
402 | * \return newly created EC_GROUP object with specified curve or NULL | |
403 | * if an error occurred | |
404 | */ | |
2da8d4eb MC |
405 | EC_GROUP *EC_GROUP_new_by_curve_name_with_libctx(OPENSSL_CTX *libctx, |
406 | const char *propq, int nid); | |
a9612d6c MC |
407 | |
408 | /** | |
409 | * Creates a EC_GROUP object with a curve specified by a NID. Same as | |
2da8d4eb MC |
410 | * EC_GROUP_new_by_curve_name_with_libctx but the libctx and propq are always |
411 | * NULL. | |
a9612d6c | 412 | * \param nid NID of the OID of the curve name |
ba12070f NL |
413 | * \return newly created EC_GROUP object with specified curve or NULL |
414 | * if an error occurred | |
415 | */ | |
8b15c740 | 416 | EC_GROUP *EC_GROUP_new_by_curve_name(int nid); |
ba12070f | 417 | |
60b350a3 RS |
418 | /** Creates a new EC_GROUP object from an ECPARAMETERS object |
419 | * \param params pointer to the ECPARAMETERS object | |
420 | * \return newly created EC_GROUP object with specified curve or NULL | |
421 | * if an error occurred | |
422 | */ | |
423 | EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params); | |
424 | ||
436ad81f | 425 | /** Creates an ECPARAMETERS object for the given EC_GROUP object. |
60b350a3 RS |
426 | * \param group pointer to the EC_GROUP object |
427 | * \param params pointer to an existing ECPARAMETERS object or NULL | |
428 | * \return pointer to the new ECPARAMETERS object or NULL | |
429 | * if an error occurred. | |
430 | */ | |
431 | ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, | |
432 | ECPARAMETERS *params); | |
433 | ||
434 | /** Creates a new EC_GROUP object from an ECPKPARAMETERS object | |
435 | * \param params pointer to an existing ECPKPARAMETERS object, or NULL | |
436 | * \return newly created EC_GROUP object with specified curve, or NULL | |
437 | * if an error occurred | |
438 | */ | |
439 | EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params); | |
440 | ||
436ad81f | 441 | /** Creates an ECPKPARAMETERS object for the given EC_GROUP object. |
60b350a3 RS |
442 | * \param group pointer to the EC_GROUP object |
443 | * \param params pointer to an existing ECPKPARAMETERS object or NULL | |
444 | * \return pointer to the new ECPKPARAMETERS object or NULL | |
445 | * if an error occurred. | |
446 | */ | |
447 | ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group, | |
448 | ECPKPARAMETERS *params); | |
449 | ||
ba12070f NL |
450 | /********************************************************************/ |
451 | /* handling of internal curves */ | |
452 | /********************************************************************/ | |
453 | ||
0f113f3e MC |
454 | typedef struct { |
455 | int nid; | |
456 | const char *comment; | |
457 | } EC_builtin_curve; | |
ba12070f | 458 | |
0f113f3e MC |
459 | /* |
460 | * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all | |
8483a003 | 461 | * available curves or zero if a error occurred. In case r is not zero, |
0f113f3e MC |
462 | * nitems EC_builtin_curve structures are filled with the data of the first |
463 | * nitems internal groups | |
464 | */ | |
65b1d31d | 465 | size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems); |
7eb18f12 | 466 | |
64095ce9 DSH |
467 | const char *EC_curve_nid2nist(int nid); |
468 | int EC_curve_nist2nid(const char *name); | |
a9612d6c MC |
469 | int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only, |
470 | BN_CTX *ctx); | |
7e31164a | 471 | |
ba12070f NL |
472 | /********************************************************************/ |
473 | /* EC_POINT functions */ | |
474 | /********************************************************************/ | |
475 | ||
476 | /** Creates a new EC_POINT object for the specified EC_GROUP | |
477 | * \param group EC_GROUP the underlying EC_GROUP object | |
478 | * \return newly created EC_POINT object or NULL if an error occurred | |
479 | */ | |
480 | EC_POINT *EC_POINT_new(const EC_GROUP *group); | |
481 | ||
482 | /** Frees a EC_POINT object | |
483 | * \param point EC_POINT object to be freed | |
484 | */ | |
485 | void EC_POINT_free(EC_POINT *point); | |
486 | ||
487 | /** Clears and frees a EC_POINT object | |
488 | * \param point EC_POINT object to be cleared and freed | |
489 | */ | |
490 | void EC_POINT_clear_free(EC_POINT *point); | |
491 | ||
492 | /** Copies EC_POINT object | |
493 | * \param dst destination EC_POINT object | |
494 | * \param src source EC_POINT object | |
478b50cf | 495 | * \return 1 on success and 0 if an error occurred |
ba12070f NL |
496 | */ |
497 | int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src); | |
945e15a2 | 498 | |
ba12070f NL |
499 | /** Creates a new EC_POINT object and copies the content of the supplied |
500 | * EC_POINT | |
501 | * \param src source EC_POINT object | |
502 | * \param group underlying the EC_GROUP object | |
0f113f3e | 503 | * \return newly created EC_POINT object or NULL if an error occurred |
ba12070f NL |
504 | */ |
505 | EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group); | |
0f113f3e MC |
506 | |
507 | /** Returns the EC_METHOD used in EC_POINT object | |
ba12070f NL |
508 | * \param point EC_POINT object |
509 | * \return the EC_METHOD used | |
510 | */ | |
23ccae80 | 511 | DEPRECATEDIN_3_0(const EC_METHOD *EC_POINT_method_of(const EC_POINT *point)) |
ba12070f NL |
512 | |
513 | /** Sets a point to infinity (neutral element) | |
514 | * \param group underlying EC_GROUP object | |
515 | * \param point EC_POINT to set to infinity | |
478b50cf | 516 | * \return 1 on success and 0 if an error occurred |
ba12070f NL |
517 | */ |
518 | int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); | |
519 | ||
520 | /** Sets the jacobian projective coordinates of a EC_POINT over GFp | |
521 | * \param group underlying EC_GROUP object | |
522 | * \param p EC_POINT object | |
523 | * \param x BIGNUM with the x-coordinate | |
524 | * \param y BIGNUM with the y-coordinate | |
525 | * \param z BIGNUM with the z-coordinate | |
526 | * \param ctx BN_CTX object (optional) | |
478b50cf | 527 | * \return 1 on success and 0 if an error occurred |
ba12070f | 528 | */ |
07caec83 | 529 | DEPRECATEDIN_3_0(int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, |
0f113f3e MC |
530 | EC_POINT *p, const BIGNUM *x, |
531 | const BIGNUM *y, const BIGNUM *z, | |
07caec83 | 532 | BN_CTX *ctx)) |
ba12070f NL |
533 | |
534 | /** Gets the jacobian projective coordinates of a EC_POINT over GFp | |
535 | * \param group underlying EC_GROUP object | |
536 | * \param p EC_POINT object | |
537 | * \param x BIGNUM for the x-coordinate | |
538 | * \param y BIGNUM for the y-coordinate | |
539 | * \param z BIGNUM for the z-coordinate | |
540 | * \param ctx BN_CTX object (optional) | |
478b50cf | 541 | * \return 1 on success and 0 if an error occurred |
ba12070f | 542 | */ |
07caec83 | 543 | DEPRECATEDIN_3_0(int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, |
0f113f3e MC |
544 | const EC_POINT *p, BIGNUM *x, |
545 | BIGNUM *y, BIGNUM *z, | |
07caec83 | 546 | BN_CTX *ctx)) |
ba12070f | 547 | |
8e3cced7 MC |
548 | /** Sets the affine coordinates of an EC_POINT |
549 | * \param group underlying EC_GROUP object | |
550 | * \param p EC_POINT object | |
551 | * \param x BIGNUM with the x-coordinate | |
552 | * \param y BIGNUM with the y-coordinate | |
553 | * \param ctx BN_CTX object (optional) | |
554 | * \return 1 on success and 0 if an error occurred | |
555 | */ | |
556 | int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p, | |
557 | const BIGNUM *x, const BIGNUM *y, | |
558 | BN_CTX *ctx); | |
559 | ||
560 | /** Gets the affine coordinates of an EC_POINT. | |
561 | * \param group underlying EC_GROUP object | |
562 | * \param p EC_POINT object | |
563 | * \param x BIGNUM for the x-coordinate | |
564 | * \param y BIGNUM for the y-coordinate | |
565 | * \param ctx BN_CTX object (optional) | |
566 | * \return 1 on success and 0 if an error occurred | |
567 | */ | |
568 | int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p, | |
569 | BIGNUM *x, BIGNUM *y, BN_CTX *ctx); | |
570 | ||
571 | /** Sets the affine coordinates of an EC_POINT. A synonym of | |
572 | * EC_POINT_set_affine_coordinates | |
ba12070f NL |
573 | * \param group underlying EC_GROUP object |
574 | * \param p EC_POINT object | |
575 | * \param x BIGNUM with the x-coordinate | |
576 | * \param y BIGNUM with the y-coordinate | |
577 | * \param ctx BN_CTX object (optional) | |
478b50cf | 578 | * \return 1 on success and 0 if an error occurred |
ba12070f | 579 | */ |
936c2b9e | 580 | DEPRECATEDIN_3_0(int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, |
672f943a RL |
581 | EC_POINT *p, |
582 | const BIGNUM *x, | |
583 | const BIGNUM *y, | |
584 | BN_CTX *ctx)) | |
ba12070f | 585 | |
8e3cced7 MC |
586 | /** Gets the affine coordinates of an EC_POINT. A synonym of |
587 | * EC_POINT_get_affine_coordinates | |
ba12070f NL |
588 | * \param group underlying EC_GROUP object |
589 | * \param p EC_POINT object | |
590 | * \param x BIGNUM for the x-coordinate | |
591 | * \param y BIGNUM for the y-coordinate | |
592 | * \param ctx BN_CTX object (optional) | |
478b50cf | 593 | * \return 1 on success and 0 if an error occurred |
ba12070f | 594 | */ |
936c2b9e | 595 | DEPRECATEDIN_3_0(int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, |
672f943a RL |
596 | const EC_POINT *p, |
597 | BIGNUM *x, | |
598 | BIGNUM *y, | |
599 | BN_CTX *ctx)) | |
ba12070f | 600 | |
8e3cced7 MC |
601 | /** Sets the x9.62 compressed coordinates of a EC_POINT |
602 | * \param group underlying EC_GROUP object | |
603 | * \param p EC_POINT object | |
604 | * \param x BIGNUM with x-coordinate | |
605 | * \param y_bit integer with the y-Bit (either 0 or 1) | |
606 | * \param ctx BN_CTX object (optional) | |
607 | * \return 1 on success and 0 if an error occurred | |
608 | */ | |
609 | int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p, | |
610 | const BIGNUM *x, int y_bit, | |
611 | BN_CTX *ctx); | |
612 | ||
613 | /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of | |
614 | * EC_POINT_set_compressed_coordinates | |
ba12070f NL |
615 | * \param group underlying EC_GROUP object |
616 | * \param p EC_POINT object | |
617 | * \param x BIGNUM with x-coordinate | |
618 | * \param y_bit integer with the y-Bit (either 0 or 1) | |
619 | * \param ctx BN_CTX object (optional) | |
478b50cf | 620 | * \return 1 on success and 0 if an error occurred |
ba12070f | 621 | */ |
936c2b9e | 622 | DEPRECATEDIN_3_0(int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, |
672f943a RL |
623 | EC_POINT *p, |
624 | const BIGNUM *x, | |
625 | int y_bit, | |
626 | BN_CTX *ctx)) | |
ee8db22e | 627 | # ifndef OPENSSL_NO_EC2M |
8e3cced7 MC |
628 | /** Sets the affine coordinates of an EC_POINT. A synonym of |
629 | * EC_POINT_set_affine_coordinates | |
ba12070f NL |
630 | * \param group underlying EC_GROUP object |
631 | * \param p EC_POINT object | |
632 | * \param x BIGNUM with the x-coordinate | |
633 | * \param y BIGNUM with the y-coordinate | |
634 | * \param ctx BN_CTX object (optional) | |
478b50cf | 635 | * \return 1 on success and 0 if an error occurred |
ba12070f | 636 | */ |
936c2b9e | 637 | DEPRECATEDIN_3_0(int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, |
672f943a RL |
638 | EC_POINT *p, |
639 | const BIGNUM *x, | |
640 | const BIGNUM *y, | |
641 | BN_CTX *ctx)) | |
ba12070f | 642 | |
8e3cced7 MC |
643 | /** Gets the affine coordinates of an EC_POINT. A synonym of |
644 | * EC_POINT_get_affine_coordinates | |
ba12070f NL |
645 | * \param group underlying EC_GROUP object |
646 | * \param p EC_POINT object | |
647 | * \param x BIGNUM for the x-coordinate | |
648 | * \param y BIGNUM for the y-coordinate | |
649 | * \param ctx BN_CTX object (optional) | |
478b50cf | 650 | * \return 1 on success and 0 if an error occurred |
ba12070f | 651 | */ |
936c2b9e | 652 | DEPRECATEDIN_3_0(int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, |
672f943a RL |
653 | const EC_POINT *p, |
654 | BIGNUM *x, | |
655 | BIGNUM *y, | |
656 | BN_CTX *ctx)) | |
ba12070f | 657 | |
8e3cced7 MC |
658 | /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of |
659 | * EC_POINT_set_compressed_coordinates | |
ba12070f NL |
660 | * \param group underlying EC_GROUP object |
661 | * \param p EC_POINT object | |
662 | * \param x BIGNUM with x-coordinate | |
663 | * \param y_bit integer with the y-Bit (either 0 or 1) | |
664 | * \param ctx BN_CTX object (optional) | |
478b50cf | 665 | * \return 1 on success and 0 if an error occurred |
ba12070f | 666 | */ |
936c2b9e | 667 | DEPRECATEDIN_3_0(int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, |
672f943a RL |
668 | EC_POINT *p, |
669 | const BIGNUM *x, | |
670 | int y_bit, | |
671 | BN_CTX *ctx)) | |
ee8db22e | 672 | # endif |
ba12070f NL |
673 | /** Encodes a EC_POINT object to a octet string |
674 | * \param group underlying EC_GROUP object | |
675 | * \param p EC_POINT object | |
676 | * \param form point conversion form | |
677 | * \param buf memory buffer for the result. If NULL the function returns | |
678 | * required buffer size. | |
679 | * \param len length of the memory buffer | |
680 | * \param ctx BN_CTX object (optional) | |
681 | * \return the length of the encoded octet string or 0 if an error occurred | |
682 | */ | |
683 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, | |
0f113f3e MC |
684 | point_conversion_form_t form, |
685 | unsigned char *buf, size_t len, BN_CTX *ctx); | |
ba12070f NL |
686 | |
687 | /** Decodes a EC_POINT from a octet string | |
688 | * \param group underlying EC_GROUP object | |
689 | * \param p EC_POINT object | |
690 | * \param buf memory buffer with the encoded ec point | |
691 | * \param len length of the encoded ec point | |
692 | * \param ctx BN_CTX object (optional) | |
478b50cf | 693 | * \return 1 on success and 0 if an error occurred |
ba12070f NL |
694 | */ |
695 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, | |
0f113f3e | 696 | const unsigned char *buf, size_t len, BN_CTX *ctx); |
7d7db13e | 697 | |
981bd8a2 DSH |
698 | /** Encodes an EC_POINT object to an allocated octet string |
699 | * \param group underlying EC_GROUP object | |
700 | * \param point EC_POINT object | |
701 | * \param form point conversion form | |
702 | * \param pbuf returns pointer to allocated buffer | |
981bd8a2 DSH |
703 | * \param ctx BN_CTX object (optional) |
704 | * \return the length of the encoded octet string or 0 if an error occurred | |
705 | */ | |
981bd8a2 DSH |
706 | size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, |
707 | point_conversion_form_t form, | |
708 | unsigned char **pbuf, BN_CTX *ctx); | |
709 | ||
6cbe6382 BM |
710 | /* other interfaces to point2oct/oct2point: */ |
711 | BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *, | |
0f113f3e | 712 | point_conversion_form_t form, BIGNUM *, BN_CTX *); |
6cbe6382 | 713 | EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *, |
0f113f3e | 714 | EC_POINT *, BN_CTX *); |
6cbe6382 | 715 | char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *, |
0f113f3e | 716 | point_conversion_form_t form, BN_CTX *); |
6cbe6382 | 717 | EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *, |
0f113f3e | 718 | EC_POINT *, BN_CTX *); |
3a12ce01 | 719 | |
ba12070f NL |
720 | /********************************************************************/ |
721 | /* functions for doing EC_POINT arithmetic */ | |
722 | /********************************************************************/ | |
723 | ||
0f113f3e | 724 | /** Computes the sum of two EC_POINT |
ba12070f NL |
725 | * \param group underlying EC_GROUP object |
726 | * \param r EC_POINT object for the result (r = a + b) | |
727 | * \param a EC_POINT object with the first summand | |
728 | * \param b EC_POINT object with the second summand | |
729 | * \param ctx BN_CTX object (optional) | |
478b50cf | 730 | * \return 1 on success and 0 if an error occurred |
ba12070f | 731 | */ |
0f113f3e MC |
732 | int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, |
733 | const EC_POINT *b, BN_CTX *ctx); | |
ba12070f NL |
734 | |
735 | /** Computes the double of a EC_POINT | |
736 | * \param group underlying EC_GROUP object | |
737 | * \param r EC_POINT object for the result (r = 2 * a) | |
0f113f3e | 738 | * \param a EC_POINT object |
ba12070f | 739 | * \param ctx BN_CTX object (optional) |
478b50cf | 740 | * \return 1 on success and 0 if an error occurred |
ba12070f | 741 | */ |
0f113f3e MC |
742 | int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, |
743 | BN_CTX *ctx); | |
ba12070f NL |
744 | |
745 | /** Computes the inverse of a EC_POINT | |
746 | * \param group underlying EC_GROUP object | |
747 | * \param a EC_POINT object to be inverted (it's used for the result as well) | |
748 | * \param ctx BN_CTX object (optional) | |
478b50cf | 749 | * \return 1 on success and 0 if an error occurred |
ba12070f NL |
750 | */ |
751 | int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx); | |
752 | ||
753 | /** Checks whether the point is the neutral element of the group | |
754 | * \param group the underlying EC_GROUP object | |
755 | * \param p EC_POINT object | |
756 | * \return 1 if the point is the neutral element and 0 otherwise | |
757 | */ | |
758 | int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p); | |
759 | ||
0f113f3e | 760 | /** Checks whether the point is on the curve |
ba12070f NL |
761 | * \param group underlying EC_GROUP object |
762 | * \param point EC_POINT object to check | |
763 | * \param ctx BN_CTX object (optional) | |
14f46560 | 764 | * \return 1 if the point is on the curve, 0 if not, or -1 on error |
ba12070f | 765 | */ |
0f113f3e MC |
766 | int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, |
767 | BN_CTX *ctx); | |
ba12070f | 768 | |
0f113f3e | 769 | /** Compares two EC_POINTs |
ba12070f NL |
770 | * \param group underlying EC_GROUP object |
771 | * \param a first EC_POINT object | |
772 | * \param b second EC_POINT object | |
773 | * \param ctx BN_CTX object (optional) | |
14f46560 | 774 | * \return 1 if the points are not equal, 0 if they are, or -1 on error |
ba12070f | 775 | */ |
0f113f3e MC |
776 | int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, |
777 | BN_CTX *ctx); | |
fb171e53 | 778 | |
c2f2db9b BB |
779 | DEPRECATEDIN_3_0(int EC_POINT_make_affine(const EC_GROUP *group, |
780 | EC_POINT *point, BN_CTX *ctx)) | |
781 | DEPRECATEDIN_3_0(int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, | |
782 | EC_POINT *points[], BN_CTX *ctx)) | |
fb171e53 | 783 | |
14f46560 | 784 | /** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i] |
ba12070f NL |
785 | * \param group underlying EC_GROUP object |
786 | * \param r EC_POINT object for the result | |
787 | * \param n BIGNUM with the multiplier for the group generator (optional) | |
8483a003 | 788 | * \param num number further summands |
ba12070f NL |
789 | * \param p array of size num of EC_POINT objects |
790 | * \param m array of size num of BIGNUM objects | |
791 | * \param ctx BN_CTX object (optional) | |
478b50cf | 792 | * \return 1 on success and 0 if an error occurred |
ba12070f | 793 | */ |
4fcd15c1 BB |
794 | DEPRECATEDIN_3_0(int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, |
795 | const BIGNUM *n, size_t num, | |
796 | const EC_POINT *p[], const BIGNUM *m[], | |
797 | BN_CTX *ctx)) | |
ba12070f NL |
798 | |
799 | /** Computes r = generator * n + q * m | |
800 | * \param group underlying EC_GROUP object | |
801 | * \param r EC_POINT object for the result | |
802 | * \param n BIGNUM with the multiplier for the group generator (optional) | |
803 | * \param q EC_POINT object with the first factor of the second summand | |
804 | * \param m BIGNUM with the second factor of the second summand | |
805 | * \param ctx BN_CTX object (optional) | |
478b50cf | 806 | * \return 1 on success and 0 if an error occurred |
ba12070f | 807 | */ |
0f113f3e MC |
808 | int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, |
809 | const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx); | |
3a12ce01 | 810 | |
ba12070f NL |
811 | /** Stores multiples of generator for faster point multiplication |
812 | * \param group EC_GROUP object | |
813 | * \param ctx BN_CTX object (optional) | |
478b50cf | 814 | * \return 1 on success and 0 if an error occurred |
ba12070f | 815 | */ |
6b4eb933 | 816 | DEPRECATEDIN_3_0(int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx)) |
6cc5e19d | 817 | |
ba12070f NL |
818 | /** Reports whether a precomputation has been done |
819 | * \param group EC_GROUP object | |
820 | * \return 1 if a pre-computation has been done and 0 otherwise | |
821 | */ | |
6b4eb933 | 822 | DEPRECATEDIN_3_0(int EC_GROUP_have_precompute_mult(const EC_GROUP *group)) |
6cc5e19d | 823 | |
ba12070f NL |
824 | /********************************************************************/ |
825 | /* ASN1 stuff */ | |
826 | /********************************************************************/ | |
8aefe253 | 827 | |
60b350a3 | 828 | DECLARE_ASN1_ITEM(ECPKPARAMETERS) |
9ba6f347 | 829 | DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS) |
60b350a3 | 830 | DECLARE_ASN1_ITEM(ECPARAMETERS) |
9ba6f347 | 831 | DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) |
60b350a3 | 832 | |
0f113f3e MC |
833 | /* |
834 | * EC_GROUP_get_basis_type() returns the NID of the basis type used to | |
835 | * represent the field elements | |
836 | */ | |
34f1f2a8 | 837 | int EC_GROUP_get_basis_type(const EC_GROUP *); |
ee8db22e | 838 | # ifndef OPENSSL_NO_EC2M |
34f1f2a8 | 839 | int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k); |
0f113f3e MC |
840 | int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1, |
841 | unsigned int *k2, unsigned int *k3); | |
ee8db22e | 842 | # endif |
8aefe253 | 843 | |
ee8db22e P |
844 | # define OPENSSL_EC_EXPLICIT_CURVE 0x000 |
845 | # define OPENSSL_EC_NAMED_CURVE 0x001 | |
458c2917 | 846 | |
6343829a | 847 | EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len); |
458c2917 BM |
848 | int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out); |
849 | ||
ee8db22e P |
850 | # define d2i_ECPKParameters_bio(bp,x) \ |
851 | ASN1_d2i_bio_of(EC_GROUP, NULL, d2i_ECPKParameters, bp, x) | |
852 | # define i2d_ECPKParameters_bio(bp,x) \ | |
853 | ASN1_i2d_bio_of(EC_GROUP, i2d_ECPKParameters, bp, x) | |
854 | # define d2i_ECPKParameters_fp(fp,x) \ | |
855 | (EC_GROUP *)ASN1_d2i_fp(NULL, (char *(*)())d2i_ECPKParameters, (fp), \ | |
856 | (unsigned char **)(x)) | |
857 | # define i2d_ECPKParameters_fp(fp,x) \ | |
858 | ASN1_i2d_fp(i2d_ECPKParameters,(fp), (unsigned char *)(x)) | |
5f3d6f70 | 859 | |
0f113f3e | 860 | int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off); |
ee8db22e | 861 | # ifndef OPENSSL_NO_STDIO |
0f113f3e | 862 | int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off); |
ee8db22e | 863 | # endif |
ba12070f NL |
864 | |
865 | /********************************************************************/ | |
866 | /* EC_KEY functions */ | |
867 | /********************************************************************/ | |
868 | ||
14a7cfb3 | 869 | /* some values for the encoding_flag */ |
ee8db22e P |
870 | # define EC_PKEY_NO_PARAMETERS 0x001 |
871 | # define EC_PKEY_NO_PUBKEY 0x002 | |
14a7cfb3 | 872 | |
cac4fb58 | 873 | /* some values for the flags field */ |
ee8db22e P |
874 | # define EC_FLAG_NON_FIPS_ALLOW 0x1 |
875 | # define EC_FLAG_FIPS_CHECKED 0x2 | |
876 | # define EC_FLAG_COFACTOR_ECDH 0x1000 | |
7ee511d0 | 877 | # define EC_FLAG_SM2_RANGE 0x4 |
cac4fb58 | 878 | |
a9612d6c MC |
879 | /** |
880 | * Creates a new EC_KEY object. | |
881 | * \param ctx The library context for to use for this EC_KEY. May be NULL in | |
882 | * which case the default library context is used. | |
883 | * \return EC_KEY object or NULL if an error occurred. | |
884 | */ | |
2da8d4eb | 885 | EC_KEY *EC_KEY_new_with_libctx(OPENSSL_CTX *ctx, const char *propq); |
a9612d6c MC |
886 | |
887 | /** | |
2da8d4eb MC |
888 | * Creates a new EC_KEY object. Same as calling EC_KEY_new_with_libctx with a |
889 | * NULL library context | |
ba12070f NL |
890 | * \return EC_KEY object or NULL if an error occurred. |
891 | */ | |
14a7cfb3 | 892 | EC_KEY *EC_KEY_new(void); |
ba12070f | 893 | |
cac4fb58 DSH |
894 | int EC_KEY_get_flags(const EC_KEY *key); |
895 | ||
896 | void EC_KEY_set_flags(EC_KEY *key, int flags); | |
897 | ||
898 | void EC_KEY_clear_flags(EC_KEY *key, int flags); | |
899 | ||
fe2f8aec TM |
900 | int EC_KEY_decoded_from_explicit_params(const EC_KEY *key); |
901 | ||
a9612d6c MC |
902 | /** |
903 | * Creates a new EC_KEY object using a named curve as underlying | |
ba12070f | 904 | * EC_GROUP object. |
2da8d4eb MC |
905 | * \param ctx The library context for to use for this EC_KEY. May be NULL in |
906 | * which case the default library context is used. | |
907 | * \param propq Any property query string | |
908 | * \param nid NID of the named curve. | |
a9612d6c MC |
909 | * \return EC_KEY object or NULL if an error occurred. |
910 | */ | |
2da8d4eb MC |
911 | EC_KEY *EC_KEY_new_by_curve_name_with_libctx(OPENSSL_CTX *ctx, const char *propq, |
912 | int nid); | |
a9612d6c MC |
913 | |
914 | /** | |
915 | * Creates a new EC_KEY object using a named curve as underlying | |
916 | * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL | |
2da8d4eb | 917 | * library context and property query string. |
ba12070f | 918 | * \param nid NID of the named curve. |
0f113f3e | 919 | * \return EC_KEY object or NULL if an error occurred. |
ba12070f | 920 | */ |
9dd84053 | 921 | EC_KEY *EC_KEY_new_by_curve_name(int nid); |
ba12070f | 922 | |
a9612d6c | 923 | |
ba12070f NL |
924 | /** Frees a EC_KEY object. |
925 | * \param key EC_KEY object to be freed. | |
926 | */ | |
927 | void EC_KEY_free(EC_KEY *key); | |
928 | ||
929 | /** Copies a EC_KEY object. | |
930 | * \param dst destination EC_KEY object | |
931 | * \param src src EC_KEY object | |
932 | * \return dst or NULL if an error occurred. | |
933 | */ | |
4a9a0d9b | 934 | EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src); |
ba12070f NL |
935 | |
936 | /** Creates a new EC_KEY object and copies the content from src to it. | |
937 | * \param src the source EC_KEY object | |
938 | * \return newly created EC_KEY object or NULL if an error occurred. | |
939 | */ | |
4a9a0d9b | 940 | EC_KEY *EC_KEY_dup(const EC_KEY *src); |
ba12070f NL |
941 | |
942 | /** Increases the internal reference count of a EC_KEY object. | |
943 | * \param key EC_KEY object | |
944 | * \return 1 on success and 0 if an error occurred. | |
945 | */ | |
946 | int EC_KEY_up_ref(EC_KEY *key); | |
947 | ||
d1da335c | 948 | /** Returns the ENGINE object of a EC_KEY object |
28c0a61b | 949 | * \param eckey EC_KEY object |
d1da335c RL |
950 | * \return the ENGINE object (possibly NULL). |
951 | */ | |
952 | ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey); | |
953 | ||
ba12070f NL |
954 | /** Returns the EC_GROUP object of a EC_KEY object |
955 | * \param key EC_KEY object | |
956 | * \return the EC_GROUP object (possibly NULL). | |
957 | */ | |
958 | const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key); | |
959 | ||
960 | /** Sets the EC_GROUP of a EC_KEY object. | |
961 | * \param key EC_KEY object | |
962 | * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY | |
963 | * object will use an own copy of the EC_GROUP). | |
964 | * \return 1 on success and 0 if an error occurred. | |
965 | */ | |
966 | int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group); | |
967 | ||
968 | /** Returns the private key of a EC_KEY object. | |
969 | * \param key EC_KEY object | |
970 | * \return a BIGNUM with the private key (possibly NULL). | |
971 | */ | |
972 | const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key); | |
973 | ||
974 | /** Sets the private key of a EC_KEY object. | |
975 | * \param key EC_KEY object | |
976 | * \param prv BIGNUM with the private key (note: the EC_KEY object | |
977 | * will use an own copy of the BIGNUM). | |
978 | * \return 1 on success and 0 if an error occurred. | |
979 | */ | |
980 | int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv); | |
981 | ||
982 | /** Returns the public key of a EC_KEY object. | |
983 | * \param key the EC_KEY object | |
984 | * \return a EC_POINT object with the public key (possibly NULL) | |
985 | */ | |
986 | const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key); | |
987 | ||
988 | /** Sets the public key of a EC_KEY object. | |
989 | * \param key EC_KEY object | |
990 | * \param pub EC_POINT object with the public key (note: the EC_KEY object | |
991 | * will use an own copy of the EC_POINT object). | |
992 | * \return 1 on success and 0 if an error occurred. | |
993 | */ | |
994 | int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub); | |
995 | ||
996 | unsigned EC_KEY_get_enc_flags(const EC_KEY *key); | |
9945b460 DSH |
997 | void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); |
998 | point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key); | |
999 | void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform); | |
3aef36ff | 1000 | |
ee8db22e | 1001 | # define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \ |
3aef36ff RS |
1002 | CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef) |
1003 | int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg); | |
1004 | void *EC_KEY_get_ex_data(const EC_KEY *key, int idx); | |
1005 | ||
9dd84053 | 1006 | /* wrapper functions for the underlying EC_GROUP object */ |
9945b460 | 1007 | void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag); |
ba12070f | 1008 | |
0f113f3e | 1009 | /** Creates a table of pre-computed multiples of the generator to |
ba12070f NL |
1010 | * accelerate further EC_KEY operations. |
1011 | * \param key EC_KEY object | |
1012 | * \param ctx BN_CTX object (optional) | |
1013 | * \return 1 on success and 0 if an error occurred. | |
1014 | */ | |
6b4eb933 | 1015 | DEPRECATEDIN_3_0(int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx)) |
ba12070f NL |
1016 | |
1017 | /** Creates a new ec private (and optional a new public) key. | |
1018 | * \param key EC_KEY object | |
1019 | * \return 1 on success and 0 if an error occurred. | |
1020 | */ | |
1021 | int EC_KEY_generate_key(EC_KEY *key); | |
1022 | ||
1023 | /** Verifies that a private and/or public key is valid. | |
1024 | * \param key the EC_KEY object | |
1025 | * \return 1 on success and 0 otherwise. | |
1026 | */ | |
1027 | int EC_KEY_check_key(const EC_KEY *key); | |
1028 | ||
4b0555ec | 1029 | /** Indicates if an EC_KEY can be used for signing. |
f5fd3848 | 1030 | * \param eckey the EC_KEY object |
4b0555ec DSH |
1031 | * \return 1 if can can sign and 0 otherwise. |
1032 | */ | |
1033 | int EC_KEY_can_sign(const EC_KEY *eckey); | |
1034 | ||
8483a003 | 1035 | /** Sets a public key from affine coordinates performing |
478b50cf | 1036 | * necessary NIST PKV tests. |
fef1c40b DSH |
1037 | * \param key the EC_KEY object |
1038 | * \param x public key x coordinate | |
1039 | * \param y public key y coordinate | |
1040 | * \return 1 on success and 0 otherwise. | |
1041 | */ | |
0f113f3e MC |
1042 | int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, |
1043 | BIGNUM *y); | |
ba12070f | 1044 | |
981bd8a2 DSH |
1045 | /** Encodes an EC_KEY public key to an allocated octet string |
1046 | * \param key key to encode | |
1047 | * \param form point conversion form | |
1048 | * \param pbuf returns pointer to allocated buffer | |
981bd8a2 DSH |
1049 | * \param ctx BN_CTX object (optional) |
1050 | * \return the length of the encoded octet string or 0 if an error occurred | |
1051 | */ | |
981bd8a2 DSH |
1052 | size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form, |
1053 | unsigned char **pbuf, BN_CTX *ctx); | |
1054 | ||
1055 | /** Decodes a EC_KEY public key from a octet string | |
1056 | * \param key key to decode | |
1057 | * \param buf memory buffer with the encoded ec point | |
1058 | * \param len length of the encoded ec point | |
1059 | * \param ctx BN_CTX object (optional) | |
1060 | * \return 1 on success and 0 if an error occurred | |
1061 | */ | |
1062 | ||
1063 | int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len, | |
1064 | BN_CTX *ctx); | |
1065 | ||
cf241395 DSH |
1066 | /** Decodes an EC_KEY private key from an octet string |
1067 | * \param key key to decode | |
1068 | * \param buf memory buffer with the encoded private key | |
1069 | * \param len length of the encoded key | |
1070 | * \return 1 on success and 0 if an error occurred | |
1071 | */ | |
1072 | ||
25d57dc7 | 1073 | int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf, size_t len); |
cf241395 DSH |
1074 | |
1075 | /** Encodes a EC_KEY private key to an octet string | |
1076 | * \param key key to encode | |
1077 | * \param buf memory buffer for the result. If NULL the function returns | |
1078 | * required buffer size. | |
1079 | * \param len length of the memory buffer | |
1080 | * \return the length of the encoded octet string or 0 if an error occurred | |
1081 | */ | |
1082 | ||
1083 | size_t EC_KEY_priv2oct(const EC_KEY *key, unsigned char *buf, size_t len); | |
1084 | ||
7fc7d1a7 | 1085 | /** Encodes an EC_KEY private key to an allocated octet string |
f5fd3848 | 1086 | * \param eckey key to encode |
7fc7d1a7 DSH |
1087 | * \param pbuf returns pointer to allocated buffer |
1088 | * \return the length of the encoded octet string or 0 if an error occurred | |
1089 | */ | |
7fc7d1a7 | 1090 | size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf); |
cf241395 | 1091 | |
ba12070f NL |
1092 | /********************************************************************/ |
1093 | /* de- and encoding functions for SEC1 ECPrivateKey */ | |
1094 | /********************************************************************/ | |
1095 | ||
1096 | /** Decodes a private key from a memory buffer. | |
1097 | * \param key a pointer to a EC_KEY object which should be used (or NULL) | |
1098 | * \param in pointer to memory with the DER encoded private key | |
1099 | * \param len length of the DER encoded private key | |
1100 | * \return the decoded private key or NULL if an error occurred. | |
1101 | */ | |
6343829a | 1102 | EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len); |
ba12070f NL |
1103 | |
1104 | /** Encodes a private key object and stores the result in a buffer. | |
1105 | * \param key the EC_KEY object to encode | |
1106 | * \param out the buffer for the result (if NULL the function returns number | |
1107 | * of bytes needed). | |
1108 | * \return 1 on success and 0 if an error occurred. | |
1109 | */ | |
9fdcc21f | 1110 | int i2d_ECPrivateKey(const EC_KEY *key, unsigned char **out); |
ba12070f | 1111 | |
ba12070f NL |
1112 | /********************************************************************/ |
1113 | /* de- and encoding functions for EC parameters */ | |
1114 | /********************************************************************/ | |
1115 | ||
1116 | /** Decodes ec parameter from a memory buffer. | |
1117 | * \param key a pointer to a EC_KEY object which should be used (or NULL) | |
1118 | * \param in pointer to memory with the DER encoded ec parameters | |
1119 | * \param len length of the DER encoded ec parameters | |
1120 | * \return a EC_KEY object with the decoded parameters or NULL if an error | |
1121 | * occurred. | |
1122 | */ | |
1123 | EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len); | |
1124 | ||
1125 | /** Encodes ec parameter and stores the result in a buffer. | |
1afd7fa9 | 1126 | * \param key the EC_KEY object with ec parameters to encode |
ba12070f NL |
1127 | * \param out the buffer for the result (if NULL the function returns number |
1128 | * of bytes needed). | |
1129 | * \return 1 on success and 0 if an error occurred. | |
1130 | */ | |
9fdcc21f | 1131 | int i2d_ECParameters(const EC_KEY *key, unsigned char **out); |
ba12070f | 1132 | |
ba12070f NL |
1133 | /********************************************************************/ |
1134 | /* de- and encoding functions for EC public key */ | |
1135 | /* (octet string, not DER -- hence 'o2i' and 'i2o') */ | |
1136 | /********************************************************************/ | |
1137 | ||
1138 | /** Decodes a ec public key from a octet string. | |
1139 | * \param key a pointer to a EC_KEY object which should be used | |
1140 | * \param in memory buffer with the encoded public key | |
1141 | * \param len length of the encoded public key | |
1142 | * \return EC_KEY object with decoded public key or NULL if an error | |
1143 | * occurred. | |
1144 | */ | |
1145 | EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len); | |
1146 | ||
1147 | /** Encodes a ec public key in an octet string. | |
1148 | * \param key the EC_KEY object with the public key | |
1149 | * \param out the buffer for the result (if NULL the function returns number | |
1150 | * of bytes needed). | |
1151 | * \return 1 on success and 0 if an error occurred | |
1152 | */ | |
60c25873 | 1153 | int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out); |
14a7cfb3 | 1154 | |
ba12070f NL |
1155 | /** Prints out the ec parameters on human readable form. |
1156 | * \param bp BIO object to which the information is printed | |
1157 | * \param key EC_KEY object | |
1158 | * \return 1 on success and 0 if an error occurred | |
1159 | */ | |
0f113f3e | 1160 | int ECParameters_print(BIO *bp, const EC_KEY *key); |
ba12070f NL |
1161 | |
1162 | /** Prints out the contents of a EC_KEY object | |
1163 | * \param bp BIO object to which the information is printed | |
1164 | * \param key EC_KEY object | |
0f113f3e | 1165 | * \param off line offset |
ba12070f NL |
1166 | * \return 1 on success and 0 if an error occurred |
1167 | */ | |
0f113f3e | 1168 | int EC_KEY_print(BIO *bp, const EC_KEY *key, int off); |
ba12070f | 1169 | |
ee8db22e | 1170 | # ifndef OPENSSL_NO_STDIO |
ba12070f NL |
1171 | /** Prints out the ec parameters on human readable form. |
1172 | * \param fp file descriptor to which the information is printed | |
1173 | * \param key EC_KEY object | |
1174 | * \return 1 on success and 0 if an error occurred | |
1175 | */ | |
0f113f3e | 1176 | int ECParameters_print_fp(FILE *fp, const EC_KEY *key); |
ba12070f NL |
1177 | |
1178 | /** Prints out the contents of a EC_KEY object | |
1179 | * \param fp file descriptor to which the information is printed | |
1180 | * \param key EC_KEY object | |
0f113f3e | 1181 | * \param off line offset |
ba12070f NL |
1182 | * \return 1 on success and 0 if an error occurred |
1183 | */ | |
0f113f3e | 1184 | int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); |
ba12070f | 1185 | |
ee8db22e | 1186 | # endif |
0bee0e62 | 1187 | |
28572b57 DSH |
1188 | const EC_KEY_METHOD *EC_KEY_OpenSSL(void); |
1189 | const EC_KEY_METHOD *EC_KEY_get_default_method(void); | |
1190 | void EC_KEY_set_default_method(const EC_KEY_METHOD *meth); | |
3aef36ff RS |
1191 | const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key); |
1192 | int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth); | |
28572b57 DSH |
1193 | EC_KEY *EC_KEY_new_method(ENGINE *engine); |
1194 | ||
ffd89124 AS |
1195 | /** The old name for ecdh_KDF_X9_63 |
1196 | * The ECDH KDF specification has been mistakingly attributed to ANSI X9.62, | |
1197 | * it is actually specified in ANSI X9.63. | |
1198 | * This identifier is retained for backwards compatibility | |
1199 | */ | |
936c2b9e RL |
1200 | DEPRECATEDIN_3_0(int ECDH_KDF_X9_62(unsigned char *out, size_t outlen, |
1201 | const unsigned char *Z, size_t Zlen, | |
1202 | const unsigned char *sinfo, size_t sinfolen, | |
1203 | const EVP_MD *md)) | |
768c53e1 | 1204 | |
5e3f9aa4 P |
1205 | DEPRECATEDIN_3_0(int ECDH_compute_key(void *out, size_t outlen, |
1206 | const EC_POINT *pub_key, | |
1207 | const EC_KEY *ecdh, | |
1208 | void *(*KDF)(const void *in, size_t inlen, | |
1209 | void *out, size_t *outlen))) | |
a22a7e70 | 1210 | |
714b2abb DSH |
1211 | typedef struct ECDSA_SIG_st ECDSA_SIG; |
1212 | ||
ef5b2ba6 DSH |
1213 | /** Allocates and initialize a ECDSA_SIG structure |
1214 | * \return pointer to a ECDSA_SIG structure or NULL if an error occurred | |
1215 | */ | |
1216 | ECDSA_SIG *ECDSA_SIG_new(void); | |
1217 | ||
1218 | /** frees a ECDSA_SIG structure | |
1219 | * \param sig pointer to the ECDSA_SIG structure | |
1220 | */ | |
1221 | void ECDSA_SIG_free(ECDSA_SIG *sig); | |
1222 | ||
9fdcc21f | 1223 | /** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp |
ef5b2ba6 DSH |
1224 | * (*pp += length of the DER encoded signature)). |
1225 | * \param sig pointer to the ECDSA_SIG object | |
1226 | * \param pp pointer to a unsigned char pointer for the output or NULL | |
bbda7997 MC |
1227 | * \return the length of the DER encoded ECDSA_SIG object or a negative value |
1228 | * on error | |
ef5b2ba6 | 1229 | */ |
9fdcc21f | 1230 | DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG) |
ef5b2ba6 | 1231 | |
9fdcc21f | 1232 | /** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp |
ef5b2ba6 DSH |
1233 | * (*pp += len)). |
1234 | * \param sig pointer to ECDSA_SIG pointer (may be NULL) | |
1235 | * \param pp memory buffer with the DER encoded signature | |
1236 | * \param len length of the buffer | |
1237 | * \return pointer to the decoded ECDSA_SIG structure (or NULL) | |
1238 | */ | |
ef5b2ba6 | 1239 | |
7236e3c8 | 1240 | /** Accessor for r and s fields of ECDSA_SIG |
0396401d | 1241 | * \param sig pointer to ECDSA_SIG structure |
7236e3c8 DSH |
1242 | * \param pr pointer to BIGNUM pointer for r (may be NULL) |
1243 | * \param ps pointer to BIGNUM pointer for s (may be NULL) | |
1244 | */ | |
9267c11b | 1245 | void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps); |
7236e3c8 | 1246 | |
0396401d DMSP |
1247 | /** Accessor for r field of ECDSA_SIG |
1248 | * \param sig pointer to ECDSA_SIG structure | |
1249 | */ | |
1250 | const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig); | |
1251 | ||
1252 | /** Accessor for s field of ECDSA_SIG | |
1253 | * \param sig pointer to ECDSA_SIG structure | |
1254 | */ | |
1255 | const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig); | |
1256 | ||
6a571a18 | 1257 | /** Setter for r and s fields of ECDSA_SIG |
0396401d | 1258 | * \param sig pointer to ECDSA_SIG structure |
a0cef658 DMSP |
1259 | * \param r pointer to BIGNUM for r (may be NULL) |
1260 | * \param s pointer to BIGNUM for s (may be NULL) | |
6a571a18 | 1261 | */ |
1d454d58 | 1262 | int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s); |
6a571a18 | 1263 | |
180eec16 DSH |
1264 | /** Computes the ECDSA signature of the given hash value using |
1265 | * the supplied private key and returns the created signature. | |
1266 | * \param dgst pointer to the hash value | |
1267 | * \param dgst_len length of the hash value | |
1268 | * \param eckey EC_KEY object containing a private EC key | |
1269 | * \return pointer to a ECDSA_SIG structure or NULL if an error occurred | |
1270 | */ | |
579422c8 P |
1271 | DEPRECATEDIN_3_0(ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, |
1272 | int dgst_len, EC_KEY *eckey)) | |
180eec16 DSH |
1273 | |
1274 | /** Computes ECDSA signature of a given hash value using the supplied | |
1275 | * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). | |
1276 | * \param dgst pointer to the hash value to sign | |
1277 | * \param dgstlen length of the hash value | |
1278 | * \param kinv BIGNUM with a pre-computed inverse k (optional) | |
8483a003 | 1279 | * \param rp BIGNUM with a pre-computed rp value (optional), |
180eec16 DSH |
1280 | * see ECDSA_sign_setup |
1281 | * \param eckey EC_KEY object containing a private EC key | |
1282 | * \return pointer to a ECDSA_SIG structure or NULL if an error occurred | |
1283 | */ | |
579422c8 P |
1284 | DEPRECATEDIN_3_0(ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, |
1285 | int dgstlen, const BIGNUM *kinv, | |
1286 | const BIGNUM *rp, EC_KEY *eckey)) | |
180eec16 DSH |
1287 | |
1288 | /** Verifies that the supplied signature is a valid ECDSA | |
1289 | * signature of the supplied hash value using the supplied public key. | |
1290 | * \param dgst pointer to the hash value | |
1291 | * \param dgst_len length of the hash value | |
1292 | * \param sig ECDSA_SIG structure | |
1293 | * \param eckey EC_KEY object containing a public EC key | |
1294 | * \return 1 if the signature is valid, 0 if the signature is invalid | |
1295 | * and -1 on error | |
1296 | */ | |
579422c8 P |
1297 | DEPRECATEDIN_3_0(int ECDSA_do_verify(const unsigned char *dgst, int dgst_len, |
1298 | const ECDSA_SIG *sig, EC_KEY *eckey)) | |
180eec16 | 1299 | |
bd3602eb DSH |
1300 | /** Precompute parts of the signing operation |
1301 | * \param eckey EC_KEY object containing a private EC key | |
1302 | * \param ctx BN_CTX object (optional) | |
1303 | * \param kinv BIGNUM pointer for the inverse of k | |
1304 | * \param rp BIGNUM pointer for x coordinate of k * generator | |
1305 | * \return 1 on success and 0 otherwise | |
1306 | */ | |
579422c8 P |
1307 | DEPRECATEDIN_3_0(int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, |
1308 | BIGNUM **kinv, BIGNUM **rp)) | |
bd3602eb DSH |
1309 | |
1310 | /** Computes ECDSA signature of a given hash value using the supplied | |
1311 | * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). | |
1312 | * \param type this parameter is ignored | |
1313 | * \param dgst pointer to the hash value to sign | |
1314 | * \param dgstlen length of the hash value | |
1315 | * \param sig memory for the DER encoded created signature | |
1316 | * \param siglen pointer to the length of the returned signature | |
1317 | * \param eckey EC_KEY object containing a private EC key | |
1318 | * \return 1 on success and 0 otherwise | |
1319 | */ | |
579422c8 P |
1320 | DEPRECATEDIN_3_0(int ECDSA_sign(int type, const unsigned char *dgst, |
1321 | int dgstlen, unsigned char *sig, | |
1322 | unsigned int *siglen, EC_KEY *eckey)) | |
bd3602eb DSH |
1323 | |
1324 | /** Computes ECDSA signature of a given hash value using the supplied | |
1325 | * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). | |
1326 | * \param type this parameter is ignored | |
1327 | * \param dgst pointer to the hash value to sign | |
1328 | * \param dgstlen length of the hash value | |
1329 | * \param sig buffer to hold the DER encoded signature | |
1330 | * \param siglen pointer to the length of the returned signature | |
1331 | * \param kinv BIGNUM with a pre-computed inverse k (optional) | |
8483a003 | 1332 | * \param rp BIGNUM with a pre-computed rp value (optional), |
bd3602eb DSH |
1333 | * see ECDSA_sign_setup |
1334 | * \param eckey EC_KEY object containing a private EC key | |
1335 | * \return 1 on success and 0 otherwise | |
1336 | */ | |
579422c8 P |
1337 | DEPRECATEDIN_3_0(int ECDSA_sign_ex(int type, const unsigned char *dgst, |
1338 | int dgstlen, unsigned char *sig, | |
1339 | unsigned int *siglen, const BIGNUM *kinv, | |
1340 | const BIGNUM *rp, EC_KEY *eckey)) | |
bd3602eb DSH |
1341 | |
1342 | /** Verifies that the given signature is valid ECDSA signature | |
1343 | * of the supplied hash value using the specified public key. | |
1344 | * \param type this parameter is ignored | |
1345 | * \param dgst pointer to the hash value | |
1346 | * \param dgstlen length of the hash value | |
1347 | * \param sig pointer to the DER encoded signature | |
1348 | * \param siglen length of the DER encoded signature | |
1349 | * \param eckey EC_KEY object containing a public EC key | |
1350 | * \return 1 if the signature is valid, 0 if the signature is invalid | |
1351 | * and -1 on error | |
1352 | */ | |
579422c8 P |
1353 | DEPRECATEDIN_3_0(int ECDSA_verify(int type, const unsigned char *dgst, |
1354 | int dgstlen, const unsigned char *sig, | |
1355 | int siglen, EC_KEY *eckey)) | |
7236e3c8 | 1356 | |
cf517a6d DSH |
1357 | /** Returns the maximum length of the DER encoded signature |
1358 | * \param eckey EC_KEY object | |
1359 | * \return numbers of bytes required for the DER encoded signature | |
1360 | */ | |
ee8db22e | 1361 | DEPRECATEDIN_3_0(int ECDSA_size(const EC_KEY *eckey)) |
cf517a6d | 1362 | |
7bb75a5d DSH |
1363 | /********************************************************************/ |
1364 | /* EC_KEY_METHOD constructors, destructors, writers and accessors */ | |
1365 | /********************************************************************/ | |
1366 | ||
579422c8 P |
1367 | DEPRECATEDIN_3_0(EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth)) |
1368 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_free(EC_KEY_METHOD *meth)) | |
1369 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_set_init | |
1370 | (EC_KEY_METHOD *meth, | |
1371 | int (*init)(EC_KEY *key), | |
1372 | void (*finish)(EC_KEY *key), | |
1373 | int (*copy)(EC_KEY *dest, const EC_KEY *src), | |
1374 | int (*set_group)(EC_KEY *key, const EC_GROUP *grp), | |
1375 | int (*set_private)(EC_KEY *key, | |
1376 | const BIGNUM *priv_key), | |
1377 | int (*set_public)(EC_KEY *key, | |
1378 | const EC_POINT *pub_key))) | |
1379 | ||
1380 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth, | |
1381 | int (*keygen)(EC_KEY *key))) | |
1382 | ||
1383 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_set_compute_key | |
1384 | (EC_KEY_METHOD *meth, | |
1385 | int (*ckey)(unsigned char **psec, | |
1386 | size_t *pseclen, | |
1387 | const EC_POINT *pub_key, | |
1388 | const EC_KEY *ecdh))) | |
1389 | ||
1390 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_set_sign | |
1391 | (EC_KEY_METHOD *meth, | |
1392 | int (*sign)(int type, const unsigned char *dgst, | |
1393 | int dlen, unsigned char *sig, | |
1394 | unsigned int *siglen, | |
1395 | const BIGNUM *kinv, const BIGNUM *r, | |
1396 | EC_KEY *eckey), | |
1397 | int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, | |
1398 | BIGNUM **kinvp, BIGNUM **rp), | |
1399 | ECDSA_SIG *(*sign_sig)(const unsigned char *dgst, | |
1400 | int dgst_len, | |
1401 | const BIGNUM *in_kinv, | |
1402 | const BIGNUM *in_r, | |
1403 | EC_KEY *eckey))) | |
1404 | ||
1405 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_set_verify | |
1406 | (EC_KEY_METHOD *meth, | |
1407 | int (*verify)(int type, const unsigned | |
1408 | char *dgst, int dgst_len, | |
1409 | const unsigned char *sigbuf, | |
1410 | int sig_len, EC_KEY *eckey), | |
1411 | int (*verify_sig)(const unsigned char *dgst, | |
1412 | int dgst_len, | |
1413 | const ECDSA_SIG *sig, | |
1414 | EC_KEY *eckey))) | |
1415 | ||
1416 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_get_init | |
1417 | (const EC_KEY_METHOD *meth, | |
1418 | int (**pinit)(EC_KEY *key), | |
1419 | void (**pfinish)(EC_KEY *key), | |
1420 | int (**pcopy)(EC_KEY *dest, const EC_KEY *src), | |
1421 | int (**pset_group)(EC_KEY *key, | |
1422 | const EC_GROUP *grp), | |
1423 | int (**pset_private)(EC_KEY *key, | |
1424 | const BIGNUM *priv_key), | |
1425 | int (**pset_public)(EC_KEY *key, | |
1426 | const EC_POINT *pub_key))) | |
1427 | ||
1428 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth, | |
1429 | int (**pkeygen)(EC_KEY *key))) | |
1430 | ||
1431 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_get_compute_key | |
1432 | (const EC_KEY_METHOD *meth, | |
1433 | int (**pck)(unsigned char **psec, | |
1434 | size_t *pseclen, | |
1435 | const EC_POINT *pub_key, | |
1436 | const EC_KEY *ecdh))) | |
1437 | ||
1438 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_get_sign | |
1439 | (const EC_KEY_METHOD *meth, | |
1440 | int (**psign)(int type, const unsigned char *dgst, | |
1441 | int dlen, unsigned char *sig, | |
1442 | unsigned int *siglen, | |
1443 | const BIGNUM *kinv, const BIGNUM *r, | |
1444 | EC_KEY *eckey), | |
1445 | int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, | |
1446 | BIGNUM **kinvp, BIGNUM **rp), | |
1447 | ECDSA_SIG *(**psign_sig)(const unsigned char *dgst, | |
1448 | int dgst_len, | |
1449 | const BIGNUM *in_kinv, | |
1450 | const BIGNUM *in_r, | |
1451 | EC_KEY *eckey))) | |
1452 | ||
1453 | DEPRECATEDIN_3_0(void EC_KEY_METHOD_get_verify | |
1454 | (const EC_KEY_METHOD *meth, | |
1455 | int (**pverify)(int type, const unsigned | |
1456 | char *dgst, int dgst_len, | |
1457 | const unsigned char *sigbuf, | |
1458 | int sig_len, EC_KEY *eckey), | |
1459 | int (**pverify_sig)(const unsigned char *dgst, | |
1460 | int dgst_len, | |
1461 | const ECDSA_SIG *sig, | |
1462 | EC_KEY *eckey))) | |
1463 | ||
1464 | # define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \ | |
1465 | d2i_ECParameters, x) | |
458c2917 | 1466 | |
ee8db22e P |
1467 | # ifndef __cplusplus |
1468 | # if defined(__SUNPRO_C) | |
1469 | # if __SUNPRO_C >= 0x520 | |
1470 | # pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE) | |
1471 | # endif | |
0f113f3e | 1472 | # endif |
ad0db060 | 1473 | # endif |
ad0db060 | 1474 | |
10d756a7 | 1475 | int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid); |
7229a2f4 | 1476 | int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc); |
4fe54d67 NT |
1477 | int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode); |
1478 | int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx); | |
0f113f3e | 1479 | |
4fe54d67 NT |
1480 | int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf); |
1481 | int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx); | |
0f113f3e | 1482 | |
4fe54d67 NT |
1483 | int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md); |
1484 | int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md); | |
0f113f3e | 1485 | |
4fe54d67 NT |
1486 | int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len); |
1487 | int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len); | |
0f113f3e | 1488 | |
4fe54d67 NT |
1489 | int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, |
1490 | int len); | |
1491 | int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm); | |
0f113f3e | 1492 | |
ee8db22e P |
1493 | # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1) |
1494 | # define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2) | |
1495 | # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3) | |
1496 | # define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4) | |
1497 | # define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5) | |
1498 | # define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6) | |
1499 | # define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7) | |
1500 | # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8) | |
1501 | # define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9) | |
1502 | # define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10) | |
579422c8 | 1503 | |
25af7a5d | 1504 | /* KDF types */ |
579422c8 P |
1505 | # define EVP_PKEY_ECDH_KDF_NONE 1 |
1506 | # define EVP_PKEY_ECDH_KDF_X9_63 2 | |
ffd89124 AS |
1507 | /** The old name for EVP_PKEY_ECDH_KDF_X9_63 |
1508 | * The ECDH KDF specification has been mistakingly attributed to ANSI X9.62, | |
1509 | * it is actually specified in ANSI X9.63. | |
1510 | * This identifier is retained for backwards compatibility | |
1511 | */ | |
579422c8 | 1512 | # define EVP_PKEY_ECDH_KDF_X9_62 EVP_PKEY_ECDH_KDF_X9_63 |
6cc5e19d | 1513 | |
0cd0a820 | 1514 | # ifdef __cplusplus |
65e81670 | 1515 | } |
0cd0a820 | 1516 | # endif |
3c27208f | 1517 | # endif |
5acaa495 | 1518 | #endif |