1/*
2 * Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 *
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
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
9 */
10
11#ifndef OPENSSL_EC_H
12#define OPENSSL_EC_H
13#pragma once
14
15#include <openssl/macros.h>
16#ifndef OPENSSL_NO_DEPRECATED_3_0
17#define HEADER_EC_H
18#endif
19
20#include <openssl/opensslconf.h>
21#include <openssl/types.h>
22
23#include <string.h>
24
25#ifdef __cplusplus
26extern "C" {
27#endif
28
29/* Values for EVP_PKEY_CTX_set_ec_param_enc() */
30#define OPENSSL_EC_EXPLICIT_CURVE 0x000
31#define OPENSSL_EC_NAMED_CURVE 0x001
32
33int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid);
34int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc);
35int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode);
36int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx);
37
38int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf);
39int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx);
40
41int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
42int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
43
44int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len);
45int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len);
46
47int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm,
48 int len);
49#ifndef OPENSSL_NO_DEPRECATED_3_0
50OSSL_DEPRECATEDIN_3_0
51int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm);
52#endif
53
54#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1)
55#define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2)
56#define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3)
57#define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4)
58#define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5)
59#define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6)
60#define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7)
61#define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8)
62#define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9)
63#define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10)
64
65/* KDF types */
66#define EVP_PKEY_ECDH_KDF_NONE 1
67#define EVP_PKEY_ECDH_KDF_X9_63 2
68/*
69 * The old name for EVP_PKEY_ECDH_KDF_X9_63
70 * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62,
71 * it is actually specified in ANSI X9.63.
72 * This identifier is retained for backwards compatibility
73 */
74#define EVP_PKEY_ECDH_KDF_X9_62 EVP_PKEY_ECDH_KDF_X9_63
75
76/** Enum for the point conversion form as defined in X9.62 (ECDSA)
77 * for the encoding of a elliptic curve point (x,y) */
78typedef enum {
79 /** the point is encoded as z||x, where the octet z specifies
80 * which solution of the quadratic equation y is */
81 POINT_CONVERSION_COMPRESSED = 2,
82 /** the point is encoded as z||x||y, where z is the octet 0x04 */
83 POINT_CONVERSION_UNCOMPRESSED = 4,
84 /** the point is encoded as z||x||y, where the octet z specifies
85 * which solution of the quadratic equation y is */
86 POINT_CONVERSION_HYBRID = 6
87} point_conversion_form_t;
88
89const char *OSSL_EC_curve_nid2name(int nid);
90
91#ifndef OPENSSL_NO_STDIO
92#include <stdio.h>
93#endif
94#ifndef OPENSSL_NO_EC
95#include <openssl/asn1.h>
96#include <openssl/symhacks.h>
97#ifndef OPENSSL_NO_DEPRECATED_1_1_0
98#include <openssl/bn.h>
99#endif
100#include <openssl/ecerr.h>
101
102#ifndef OPENSSL_ECC_MAX_FIELD_BITS
103#define OPENSSL_ECC_MAX_FIELD_BITS 661
104#endif
105
106#include <openssl/params.h>
107#ifndef OPENSSL_NO_DEPRECATED_3_0
108typedef struct ec_method_st EC_METHOD;
109#endif
110typedef struct ec_group_st EC_GROUP;
111typedef struct ec_point_st EC_POINT;
112typedef struct ecpk_parameters_st ECPKPARAMETERS;
113typedef struct ec_parameters_st ECPARAMETERS;
114
115/********************************************************************/
116/* EC_METHODs for curves over GF(p) */
117/********************************************************************/
118
119#ifndef OPENSSL_NO_DEPRECATED_3_0
120/** Returns the basic GFp ec methods which provides the basis for the
121 * optimized methods.
122 * \return EC_METHOD object
123 */
124OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_simple_method(void);
125
126/** Returns GFp methods using montgomery multiplication.
127 * \return EC_METHOD object
128 */
129OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_mont_method(void);
130
131/** Returns GFp methods using optimized methods for NIST recommended curves
132 * \return EC_METHOD object
133 */
134OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nist_method(void);
135
136#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
137/** Returns 64-bit optimized methods for nistp224
138 * \return EC_METHOD object
139 */
140OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp224_method(void);
141
142/** Returns 64-bit optimized methods for nistp256
143 * \return EC_METHOD object
144 */
145OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp256_method(void);
146
147/** Returns 64-bit optimized methods for nistp521
148 * \return EC_METHOD object
149 */
150OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp521_method(void);
151#endif /* OPENSSL_NO_EC_NISTP_64_GCC_128 */
152
153#ifndef OPENSSL_NO_EC2M
154/********************************************************************/
155/* EC_METHOD for curves over GF(2^m) */
156/********************************************************************/
157
158/** Returns the basic GF2m ec method
159 * \return EC_METHOD object
160 */
161OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GF2m_simple_method(void);
162
163#endif
164
165/********************************************************************/
166/* EC_GROUP functions */
167/********************************************************************/
168
169/**
170 * Creates a new EC_GROUP object
171 * \param meth EC_METHOD to use
172 * \return newly created EC_GROUP object or NULL in case of an error.
173 */
174OSSL_DEPRECATEDIN_3_0 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
175
176/** Clears and frees a EC_GROUP object
177 * \param group EC_GROUP object to be cleared and freed.
178 */
179OSSL_DEPRECATEDIN_3_0 void EC_GROUP_clear_free(EC_GROUP *group);
180
181/** Returns the EC_METHOD of the EC_GROUP object.
182 * \param group EC_GROUP object
183 * \return EC_METHOD used in this EC_GROUP object.
184 */
185OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
186
187/** Returns the field type of the EC_METHOD.
188 * \param meth EC_METHOD object
189 * \return NID of the underlying field type OID.
190 */
191OSSL_DEPRECATEDIN_3_0 int EC_METHOD_get_field_type(const EC_METHOD *meth);
192#endif /* OPENSSL_NO_DEPRECATED_3_0 */
193
194/** Frees a EC_GROUP object
195 * \param group EC_GROUP object to be freed.
196 */
197void EC_GROUP_free(EC_GROUP *group);
198
199/** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
200 * \param dst destination EC_GROUP object
201 * \param src source EC_GROUP object
202 * \return 1 on success and 0 if an error occurred.
203 */
204int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
205
206/** Creates a new EC_GROUP object and copies the content
207 * form src to the newly created EC_KEY object
208 * \param src source EC_GROUP object
209 * \return newly created EC_GROUP object or NULL in case of an error.
210 */
211EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
212
213/** Sets the generator and its order/cofactor of a EC_GROUP object.
214 * \param group EC_GROUP object
215 * \param generator EC_POINT object with the generator.
216 * \param order the order of the group generated by the generator.
217 * \param cofactor the index of the sub-group generated by the generator
218 * in the group of all points on the elliptic curve.
219 * \return 1 on success and 0 if an error occurred
220 */
221int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
222 const BIGNUM *order, const BIGNUM *cofactor);
223
224/** Returns the generator of a EC_GROUP object.
225 * \param group EC_GROUP object
226 * \return the currently used generator (possibly NULL).
227 */
228const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
229
230/** Returns the montgomery data for order(Generator)
231 * \param group EC_GROUP object
232 * \return the currently used montgomery data (possibly NULL).
233 */
234BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
235
236/** Gets the order of a EC_GROUP
237 * \param group EC_GROUP object
238 * \param order BIGNUM to which the order is copied
239 * \param ctx unused
240 * \return 1 on success and 0 if an error occurred
241 */
242int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
243
244/** Gets the order of an EC_GROUP
245 * \param group EC_GROUP object
246 * \return the group order
247 */
248const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
249
250/** Gets the number of bits of the order of an EC_GROUP
251 * \param group EC_GROUP object
252 * \return number of bits of group order.
253 */
254int EC_GROUP_order_bits(const EC_GROUP *group);
255
256/** Gets the cofactor of a EC_GROUP
257 * \param group EC_GROUP object
258 * \param cofactor BIGNUM to which the cofactor is copied
259 * \param ctx unused
260 * \return 1 on success and 0 if an error occurred
261 */
262int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
263 BN_CTX *ctx);
264
265/** Gets the cofactor of an EC_GROUP
266 * \param group EC_GROUP object
267 * \return the group cofactor
268 */
269const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group);
270
271/** Sets the name of a EC_GROUP object
272 * \param group EC_GROUP object
273 * \param nid NID of the curve name OID
274 */
275void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
276
277/** Returns the curve name of a EC_GROUP object
278 * \param group EC_GROUP object
279 * \return NID of the curve name OID or 0 if not set.
280 */
281int EC_GROUP_get_curve_name(const EC_GROUP *group);
282
283/** Gets the field of an EC_GROUP
284 * \param group EC_GROUP object
285 * \return the group field
286 */
287const BIGNUM *EC_GROUP_get0_field(const EC_GROUP *group);
288
289/** Returns the field type of the EC_GROUP.
290 * \param group EC_GROUP object
291 * \return NID of the underlying field type OID.
292 */
293int EC_GROUP_get_field_type(const EC_GROUP *group);
294
295void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
296int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
297
298void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
299 point_conversion_form_t form);
300point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
301
302unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
303size_t EC_GROUP_get_seed_len(const EC_GROUP *);
304size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
305
306/** Sets the parameters of an ec curve defined by y^2 = x^3 + a*x + b (for GFp)
307 * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m)
308 * \param group EC_GROUP object
309 * \param p BIGNUM with the prime number (GFp) or the polynomial
310 * defining the underlying field (GF2m)
311 * \param a BIGNUM with parameter a of the equation
312 * \param b BIGNUM with parameter b of the equation
313 * \param ctx BN_CTX object (optional)
314 * \return 1 on success and 0 if an error occurred
315 */
316int EC_GROUP_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
317 const BIGNUM *b, BN_CTX *ctx);
318
319/** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp)
320 * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m)
321 * \param group EC_GROUP object
322 * \param p BIGNUM with the prime number (GFp) or the polynomial
323 * defining the underlying field (GF2m)
324 * \param a BIGNUM for parameter a of the equation
325 * \param b BIGNUM for parameter b of the equation
326 * \param ctx BN_CTX object (optional)
327 * \return 1 on success and 0 if an error occurred
328 */
329int EC_GROUP_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b,
330 BN_CTX *ctx);
331
332#ifndef OPENSSL_NO_DEPRECATED_3_0
333/** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve
334 * \param group EC_GROUP object
335 * \param p BIGNUM with the prime number (GFp) or the polynomial
336 * defining the underlying field (GF2m)
337 * \param a BIGNUM with parameter a of the equation
338 * \param b BIGNUM with parameter b of the equation
339 * \param ctx BN_CTX object (optional)
340 * \return 1 on success and 0 if an error occurred
341 */
342OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GFp(EC_GROUP *group,
343 const BIGNUM *p,
344 const BIGNUM *a,
345 const BIGNUM *b,
346 BN_CTX *ctx);
347
348/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
349 * \param group EC_GROUP object
350 * \param p BIGNUM with the prime number (GFp) or the polynomial
351 * defining the underlying field (GF2m)
352 * \param a BIGNUM for parameter a of the equation
353 * \param b BIGNUM for parameter b of the equation
354 * \param ctx BN_CTX object (optional)
355 * \return 1 on success and 0 if an error occurred
356 */
357OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GFp(const EC_GROUP *group,
358 BIGNUM *p,
359 BIGNUM *a, BIGNUM *b,
360 BN_CTX *ctx);
361
362#ifndef OPENSSL_NO_EC2M
363/** Sets the parameter of an ec curve. Synonym for EC_GROUP_set_curve
364 * \param group EC_GROUP object
365 * \param p BIGNUM with the prime number (GFp) or the polynomial
366 * defining the underlying field (GF2m)
367 * \param a BIGNUM with parameter a of the equation
368 * \param b BIGNUM with parameter b of the equation
369 * \param ctx BN_CTX object (optional)
370 * \return 1 on success and 0 if an error occurred
371 */
372OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GF2m(EC_GROUP *group,
373 const BIGNUM *p,
374 const BIGNUM *a,
375 const BIGNUM *b,
376 BN_CTX *ctx);
377
378/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
379 * \param group EC_GROUP object
380 * \param p BIGNUM with the prime number (GFp) or the polynomial
381 * defining the underlying field (GF2m)
382 * \param a BIGNUM for parameter a of the equation
383 * \param b BIGNUM for parameter b of the equation
384 * \param ctx BN_CTX object (optional)
385 * \return 1 on success and 0 if an error occurred
386 */
387OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group,
388 BIGNUM *p,
389 BIGNUM *a, BIGNUM *b,
390 BN_CTX *ctx);
391#endif /* OPENSSL_NO_EC2M */
392#endif /* OPENSSL_NO_DEPRECATED_3_0 */
393
394/** Returns the number of bits needed to represent a field element
395 * \param group EC_GROUP object
396 * \return number of bits needed to represent a field element
397 */
398int EC_GROUP_get_degree(const EC_GROUP *group);
399
400/** Checks whether the parameter in the EC_GROUP define a valid ec group
401 * \param group EC_GROUP object
402 * \param ctx BN_CTX object (optional)
403 * \return 1 if group is a valid ec group and 0 otherwise
404 */
405int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
406
407/** Checks whether the discriminant of the elliptic curve is zero or not
408 * \param group EC_GROUP object
409 * \param ctx BN_CTX object (optional)
410 * \return 1 if the discriminant is not zero and 0 otherwise
411 */
412int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
413
414/** Compares two EC_GROUP objects
415 * \param a first EC_GROUP object
416 * \param b second EC_GROUP object
417 * \param ctx BN_CTX object (optional)
418 * \return 0 if the groups are equal, 1 if not, or -1 on error
419 */
420int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
421
422/*
423 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
424 * choosing an appropriate EC_METHOD
425 */
426
427/** Creates a new EC_GROUP object with the specified parameters defined
428 * over GFp (defined by the equation y^2 = x^3 + a*x + b)
429 * \param p BIGNUM with the prime number
430 * \param a BIGNUM with the parameter a of the equation
431 * \param b BIGNUM with the parameter b of the equation
432 * \param ctx BN_CTX object (optional)
433 * \return newly created EC_GROUP object with the specified parameters
434 */
435EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
436 const BIGNUM *b, BN_CTX *ctx);
437#ifndef OPENSSL_NO_EC2M
438/** Creates a new EC_GROUP object with the specified parameters defined
439 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
440 * \param p BIGNUM with the polynomial defining the underlying field
441 * \param a BIGNUM with the parameter a of the equation
442 * \param b BIGNUM with the parameter b of the equation
443 * \param ctx BN_CTX object (optional)
444 * \return newly created EC_GROUP object with the specified parameters
445 */
446EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
447 const BIGNUM *b, BN_CTX *ctx);
448#endif
449
450/**
451 * Creates a EC_GROUP object with a curve specified by parameters.
452 * The parameters may be explicit or a named curve,
453 * \param params A list of parameters describing the group.
454 * \param libctx The associated library context or NULL for the default
455 * context
456 * \param propq A property query string
457 * \return newly created EC_GROUP object with specified parameters or NULL
458 * if an error occurred
459 */
460EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
461 OSSL_LIB_CTX *libctx, const char *propq);
462
463/**
464 * Creates an OSSL_PARAM array with the parameters describing the given
465 * EC_GROUP.
466 * The resulting parameters may contain an explicit or a named curve depending
467 * on the EC_GROUP.
468 * \param group pointer to the EC_GROUP object
469 * \param libctx The associated library context or NULL for the default
470 * context
471 * \param propq A property query string
472 * \param bnctx BN_CTX object (optional)
473 * \return newly created OSSL_PARAM array with the parameters
474 * describing the given EC_GROUP or NULL if an error occurred
475 */
476OSSL_PARAM *EC_GROUP_to_params(const EC_GROUP *group, OSSL_LIB_CTX *libctx,
477 const char *propq, BN_CTX *bnctx);
478
479/**
480 * Creates a EC_GROUP object with a curve specified by a NID
481 * \param libctx The associated library context or NULL for the default
482 * context
483 * \param propq A property query string
484 * \param nid NID of the OID of the curve name
485 * \return newly created EC_GROUP object with specified curve or NULL
486 * if an error occurred
487 */
488EC_GROUP *EC_GROUP_new_by_curve_name_ex(OSSL_LIB_CTX *libctx, const char *propq,
489 int nid);
490
491/**
492 * Creates a EC_GROUP object with a curve specified by a NID. Same as
493 * EC_GROUP_new_by_curve_name_ex but the libctx and propq are always
494 * NULL.
495 * \param nid NID of the OID of the curve name
496 * \return newly created EC_GROUP object with specified curve or NULL
497 * if an error occurred
498 */
499EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
500
501/** Creates a new EC_GROUP object from an ECPARAMETERS object
502 * \param params pointer to the ECPARAMETERS object
503 * \return newly created EC_GROUP object with specified curve or NULL
504 * if an error occurred
505 */
506EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
507
508/** Creates an ECPARAMETERS object for the given EC_GROUP object.
509 * \param group pointer to the EC_GROUP object
510 * \param params pointer to an existing ECPARAMETERS object or NULL
511 * \return pointer to the new ECPARAMETERS object or NULL
512 * if an error occurred.
513 */
514ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
515 ECPARAMETERS *params);
516
517/** Creates a new EC_GROUP object from an ECPKPARAMETERS object
518 * \param params pointer to an existing ECPKPARAMETERS object, or NULL
519 * \return newly created EC_GROUP object with specified curve, or NULL
520 * if an error occurred
521 */
522EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
523
524/** Creates an ECPKPARAMETERS object for the given EC_GROUP object.
525 * \param group pointer to the EC_GROUP object
526 * \param params pointer to an existing ECPKPARAMETERS object or NULL
527 * \return pointer to the new ECPKPARAMETERS object or NULL
528 * if an error occurred.
529 */
530ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
531 ECPKPARAMETERS *params);
532
533/********************************************************************/
534/* handling of internal curves */
535/********************************************************************/
536
537typedef struct {
538 int nid;
539 const char *comment;
540} EC_builtin_curve;
541
542/*
543 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
544 * available curves or zero if a error occurred. In case r is not zero,
545 * nitems EC_builtin_curve structures are filled with the data of the first
546 * nitems internal groups
547 */
548size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
549
550const char *EC_curve_nid2nist(int nid);
551int EC_curve_nist2nid(const char *name);
552int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only,
553 BN_CTX *ctx);
554
555/********************************************************************/
556/* EC_POINT functions */
557/********************************************************************/
558
559/** Creates a new EC_POINT object for the specified EC_GROUP
560 * \param group EC_GROUP the underlying EC_GROUP object
561 * \return newly created EC_POINT object or NULL if an error occurred
562 */
563EC_POINT *EC_POINT_new(const EC_GROUP *group);
564
565/** Frees a EC_POINT object
566 * \param point EC_POINT object to be freed
567 */
568void EC_POINT_free(EC_POINT *point);
569
570/** Clears and frees a EC_POINT object
571 * \param point EC_POINT object to be cleared and freed
572 */
573void EC_POINT_clear_free(EC_POINT *point);
574
575/** Copies EC_POINT object
576 * \param dst destination EC_POINT object
577 * \param src source EC_POINT object
578 * \return 1 on success and 0 if an error occurred
579 */
580int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
581
582/** Creates a new EC_POINT object and copies the content of the supplied
583 * EC_POINT
584 * \param src source EC_POINT object
585 * \param group underlying the EC_GROUP object
586 * \return newly created EC_POINT object or NULL if an error occurred
587 */
588EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
589
590/** Sets a point to infinity (neutral element)
591 * \param group underlying EC_GROUP object
592 * \param point EC_POINT to set to infinity
593 * \return 1 on success and 0 if an error occurred
594 */
595int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
596
597#ifndef OPENSSL_NO_DEPRECATED_3_0
598/** Returns the EC_METHOD used in EC_POINT object
599 * \param point EC_POINT object
600 * \return the EC_METHOD used
601 */
602OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
603
604/** Sets the jacobian projective coordinates of a EC_POINT over GFp
605 * \param group underlying EC_GROUP object
606 * \param p EC_POINT object
607 * \param x BIGNUM with the x-coordinate
608 * \param y BIGNUM with the y-coordinate
609 * \param z BIGNUM with the z-coordinate
610 * \param ctx BN_CTX object (optional)
611 * \return 1 on success and 0 if an error occurred
612 */
613OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
614 const BIGNUM *x, const BIGNUM *y, const BIGNUM *z,
615 BN_CTX *ctx);
616
617/** Gets the jacobian projective coordinates of a EC_POINT over GFp
618 * \param group underlying EC_GROUP object
619 * \param p EC_POINT object
620 * \param x BIGNUM for the x-coordinate
621 * \param y BIGNUM for the y-coordinate
622 * \param z BIGNUM for the z-coordinate
623 * \param ctx BN_CTX object (optional)
624 * \return 1 on success and 0 if an error occurred
625 */
626OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *p,
627 BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx);
628#endif /* OPENSSL_NO_DEPRECATED_3_0 */
629
630/** Sets the affine coordinates of an EC_POINT
631 * \param group underlying EC_GROUP object
632 * \param p EC_POINT object
633 * \param x BIGNUM with the x-coordinate
634 * \param y BIGNUM with the y-coordinate
635 * \param ctx BN_CTX object (optional)
636 * \return 1 on success and 0 if an error occurred
637 */
638int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p,
639 const BIGNUM *x, const BIGNUM *y,
640 BN_CTX *ctx);
641
642/** Gets the affine coordinates of an EC_POINT.
643 * \param group underlying EC_GROUP object
644 * \param p EC_POINT object
645 * \param x BIGNUM for the x-coordinate
646 * \param y BIGNUM for the y-coordinate
647 * \param ctx BN_CTX object (optional)
648 * \return 1 on success and 0 if an error occurred
649 */
650int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p,
651 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
652
653#ifndef OPENSSL_NO_DEPRECATED_3_0
654/** Sets the affine coordinates of an EC_POINT. A synonym of
655 * EC_POINT_set_affine_coordinates
656 * \param group underlying EC_GROUP object
657 * \param p EC_POINT object
658 * \param x BIGNUM with the x-coordinate
659 * \param y BIGNUM with the y-coordinate
660 * \param ctx BN_CTX object (optional)
661 * \return 1 on success and 0 if an error occurred
662 */
663OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
664 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
665
666/** Gets the affine coordinates of an EC_POINT. A synonym of
667 * EC_POINT_get_affine_coordinates
668 * \param group underlying EC_GROUP object
669 * \param p EC_POINT object
670 * \param x BIGNUM for the x-coordinate
671 * \param y BIGNUM for the y-coordinate
672 * \param ctx BN_CTX object (optional)
673 * \return 1 on success and 0 if an error occurred
674 */
675OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, const EC_POINT *p,
676 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
677#endif /* OPENSSL_NO_DEPRECATED_3_0 */
678
679/** Sets the x9.62 compressed coordinates of a EC_POINT
680 * \param group underlying EC_GROUP object
681 * \param p EC_POINT object
682 * \param x BIGNUM with x-coordinate
683 * \param y_bit integer with the y-Bit (either 0 or 1)
684 * \param ctx BN_CTX object (optional)
685 * \return 1 on success and 0 if an error occurred
686 */
687int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p,
688 const BIGNUM *x, int y_bit,
689 BN_CTX *ctx);
690
691#ifndef OPENSSL_NO_DEPRECATED_3_0
692/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
693 * EC_POINT_set_compressed_coordinates
694 * \param group underlying EC_GROUP object
695 * \param p EC_POINT object
696 * \param x BIGNUM with x-coordinate
697 * \param y_bit integer with the y-Bit (either 0 or 1)
698 * \param ctx BN_CTX object (optional)
699 * \return 1 on success and 0 if an error occurred
700 */
701OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
702 const BIGNUM *x, int y_bit, BN_CTX *ctx);
703#ifndef OPENSSL_NO_EC2M
704/** Sets the affine coordinates of an EC_POINT. A synonym of
705 * EC_POINT_set_affine_coordinates
706 * \param group underlying EC_GROUP object
707 * \param p EC_POINT object
708 * \param x BIGNUM with the x-coordinate
709 * \param y BIGNUM with the y-coordinate
710 * \param ctx BN_CTX object (optional)
711 * \return 1 on success and 0 if an error occurred
712 */
713OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
714 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
715
716/** Gets the affine coordinates of an EC_POINT. A synonym of
717 * EC_POINT_get_affine_coordinates
718 * \param group underlying EC_GROUP object
719 * \param p EC_POINT object
720 * \param x BIGNUM for the x-coordinate
721 * \param y BIGNUM for the y-coordinate
722 * \param ctx BN_CTX object (optional)
723 * \return 1 on success and 0 if an error occurred
724 */
725OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, const EC_POINT *p,
726 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
727
728/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
729 * EC_POINT_set_compressed_coordinates
730 * \param group underlying EC_GROUP object
731 * \param p EC_POINT object
732 * \param x BIGNUM with x-coordinate
733 * \param y_bit integer with the y-Bit (either 0 or 1)
734 * \param ctx BN_CTX object (optional)
735 * \return 1 on success and 0 if an error occurred
736 */
737OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
738 const BIGNUM *x, int y_bit, BN_CTX *ctx);
739#endif
740#endif /* OPENSSL_NO_DEPRECATED_3_0 */
741
742/** Encodes a EC_POINT object to a octet string
743 * \param group underlying EC_GROUP object
744 * \param p EC_POINT object
745 * \param form point conversion form
746 * \param buf memory buffer for the result. If NULL the function returns
747 * required buffer size.
748 * \param len length of the memory buffer
749 * \param ctx BN_CTX object (optional)
750 * \return the length of the encoded octet string or 0 if an error occurred
751 */
752size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
753 point_conversion_form_t form,
754 unsigned char *buf, size_t len, BN_CTX *ctx);
755
756/** Decodes a EC_POINT from a octet string
757 * \param group underlying EC_GROUP object
758 * \param p EC_POINT object
759 * \param buf memory buffer with the encoded ec point
760 * \param len length of the encoded ec point
761 * \param ctx BN_CTX object (optional)
762 * \return 1 on success and 0 if an error occurred
763 */
764int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
765 const unsigned char *buf, size_t len, BN_CTX *ctx);
766
767/** Encodes an EC_POINT object to an allocated octet string
768 * \param group underlying EC_GROUP object
769 * \param point EC_POINT object
770 * \param form point conversion form
771 * \param pbuf returns pointer to allocated buffer
772 * \param ctx BN_CTX object (optional)
773 * \return the length of the encoded octet string or 0 if an error occurred
774 */
775size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
776 point_conversion_form_t form,
777 unsigned char **pbuf, BN_CTX *ctx);
778
779/* other interfaces to point2oct/oct2point: */
780#ifndef OPENSSL_NO_DEPRECATED_3_0
781OSSL_DEPRECATEDIN_3_0 BIGNUM *EC_POINT_point2bn(const EC_GROUP *,
782 const EC_POINT *,
783 point_conversion_form_t form,
784 BIGNUM *, BN_CTX *);
785OSSL_DEPRECATEDIN_3_0 EC_POINT *EC_POINT_bn2point(const EC_GROUP *,
786 const BIGNUM *,
787 EC_POINT *, BN_CTX *);
788#endif /* OPENSSL_NO_DEPRECATED_3_0 */
789
790char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
791 point_conversion_form_t form, BN_CTX *);
792EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
793 EC_POINT *, BN_CTX *);
794
795/********************************************************************/
796/* functions for doing EC_POINT arithmetic */
797/********************************************************************/
798
799/** Computes the sum of two EC_POINT
800 * \param group underlying EC_GROUP object
801 * \param r EC_POINT object for the result (r = a + b)
802 * \param a EC_POINT object with the first summand
803 * \param b EC_POINT object with the second summand
804 * \param ctx BN_CTX object (optional)
805 * \return 1 on success and 0 if an error occurred
806 */
807int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
808 const EC_POINT *b, BN_CTX *ctx);
809
810/** Computes the double of a EC_POINT
811 * \param group underlying EC_GROUP object
812 * \param r EC_POINT object for the result (r = 2 * a)
813 * \param a EC_POINT object
814 * \param ctx BN_CTX object (optional)
815 * \return 1 on success and 0 if an error occurred
816 */
817int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
818 BN_CTX *ctx);
819
820/** Computes the inverse of a EC_POINT
821 * \param group underlying EC_GROUP object
822 * \param a EC_POINT object to be inverted (it's used for the result as well)
823 * \param ctx BN_CTX object (optional)
824 * \return 1 on success and 0 if an error occurred
825 */
826int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
827
828/** Checks whether the point is the neutral element of the group
829 * \param group the underlying EC_GROUP object
830 * \param p EC_POINT object
831 * \return 1 if the point is the neutral element and 0 otherwise
832 */
833int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
834
835/** Checks whether the point is on the curve
836 * \param group underlying EC_GROUP object
837 * \param point EC_POINT object to check
838 * \param ctx BN_CTX object (optional)
839 * \return 1 if the point is on the curve, 0 if not, or -1 on error
840 */
841int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
842 BN_CTX *ctx);
843
844/** Compares two EC_POINTs
845 * \param group underlying EC_GROUP object
846 * \param a first EC_POINT object
847 * \param b second EC_POINT object
848 * \param ctx BN_CTX object (optional)
849 * \return 1 if the points are not equal, 0 if they are, or -1 on error
850 */
851int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
852 BN_CTX *ctx);
853
854#ifndef OPENSSL_NO_DEPRECATED_3_0
855OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group,
856 EC_POINT *point, BN_CTX *ctx);
857OSSL_DEPRECATEDIN_3_0 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
858 EC_POINT *points[], BN_CTX *ctx);
859
860/** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i]
861 * \param group underlying EC_GROUP object
862 * \param r EC_POINT object for the result
863 * \param n BIGNUM with the multiplier for the group generator (optional)
864 * \param num number further summands
865 * \param p array of size num of EC_POINT objects
866 * \param m array of size num of BIGNUM objects
867 * \param ctx BN_CTX object (optional)
868 * \return 1 on success and 0 if an error occurred
869 */
870OSSL_DEPRECATEDIN_3_0 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r,
871 const BIGNUM *n, size_t num,
872 const EC_POINT *p[], const BIGNUM *m[],
873 BN_CTX *ctx);
874#endif /* OPENSSL_NO_DEPRECATED_3_0 */
875
876/** Computes r = generator * n + q * m
877 * \param group underlying EC_GROUP object
878 * \param r EC_POINT object for the result
879 * \param n BIGNUM with the multiplier for the group generator (optional)
880 * \param q EC_POINT object with the first factor of the second summand
881 * \param m BIGNUM with the second factor of the second summand
882 * \param ctx BN_CTX object (optional)
883 * \return 1 on success and 0 if an error occurred
884 */
885int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
886 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
887
888#ifndef OPENSSL_NO_DEPRECATED_3_0
889/** Stores multiples of generator for faster point multiplication
890 * \param group EC_GROUP object
891 * \param ctx BN_CTX object (optional)
892 * \return 1 on success and 0 if an error occurred
893 */
894OSSL_DEPRECATEDIN_3_0 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
895
896/** Reports whether a precomputation has been done
897 * \param group EC_GROUP object
898 * \return 1 if a pre-computation has been done and 0 otherwise
899 */
900OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
901#endif /* OPENSSL_NO_DEPRECATED_3_0 */
902
903/********************************************************************/
904/* ASN1 stuff */
905/********************************************************************/
906
907DECLARE_ASN1_ITEM(ECPKPARAMETERS)
908DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
909DECLARE_ASN1_ITEM(ECPARAMETERS)
910DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
911
912/*
913 * EC_GROUP_get_basis_type() returns the NID of the basis type used to
914 * represent the field elements
915 */
916int EC_GROUP_get_basis_type(const EC_GROUP *);
917#ifndef OPENSSL_NO_EC2M
918int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
919int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
920 unsigned int *k2, unsigned int *k3);
921#endif
922
923EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
924int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
925
926#define d2i_ECPKParameters_bio(bp, x) \
927 ASN1_d2i_bio_of(EC_GROUP, NULL, d2i_ECPKParameters, bp, x)
928#define i2d_ECPKParameters_bio(bp, x) \
929 ASN1_i2d_bio_of(EC_GROUP, i2d_ECPKParameters, bp, x)
930#define d2i_ECPKParameters_fp(fp, x) \
931 (EC_GROUP *)ASN1_d2i_fp(NULL, (d2i_of_void *)d2i_ECPKParameters, (fp), \
932 (void **)(x))
933#define i2d_ECPKParameters_fp(fp, x) \
934 ASN1_i2d_fp((i2d_of_void *)i2d_ECPKParameters, (fp), (void *)(x))
935
936#ifndef OPENSSL_NO_DEPRECATED_3_0
937OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO *bp, const EC_GROUP *x,
938 int off);
939#ifndef OPENSSL_NO_STDIO
940OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x,
941 int off);
942#endif
943#endif /* OPENSSL_NO_DEPRECATED_3_0 */
944
945/********************************************************************/
946/* EC_KEY functions */
947/********************************************************************/
948
949/* some values for the encoding_flag */
950#define EC_PKEY_NO_PARAMETERS 0x001
951#define EC_PKEY_NO_PUBKEY 0x002
952
953/* some values for the flags field */
954#define EC_FLAG_SM2_RANGE 0x0004
955#define EC_FLAG_COFACTOR_ECDH 0x1000
956#define EC_FLAG_CHECK_NAMED_GROUP 0x2000
957#define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000
958#define EC_FLAG_CHECK_NAMED_GROUP_MASK \
959 (EC_FLAG_CHECK_NAMED_GROUP | EC_FLAG_CHECK_NAMED_GROUP_NIST)
960
961/* Deprecated flags - it was using 0x01..0x02 */
962#define EC_FLAG_NON_FIPS_ALLOW 0x0000
963#define EC_FLAG_FIPS_CHECKED 0x0000
964
965#ifndef OPENSSL_NO_DEPRECATED_3_0
966/**
967 * Creates a new EC_KEY object.
968 * \param ctx The library context for to use for this EC_KEY. May be NULL in
969 * which case the default library context is used.
970 * \return EC_KEY object or NULL if an error occurred.
971 */
972OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_ex(OSSL_LIB_CTX *ctx, const char *propq);
973
974/**
975 * Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a
976 * NULL library context
977 * \return EC_KEY object or NULL if an error occurred.
978 */
979OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void);
980
981OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key);
982
983OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags);
984
985OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags);
986
987OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key);
988
989/**
990 * Creates a new EC_KEY object using a named curve as underlying
991 * EC_GROUP object.
992 * \param ctx The library context for to use for this EC_KEY. May be NULL in
993 * which case the default library context is used.
994 * \param propq Any property query string
995 * \param nid NID of the named curve.
996 * \return EC_KEY object or NULL if an error occurred.
997 */
998OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX *ctx,
999 const char *propq,
1000 int nid);
1001
1002/**
1003 * Creates a new EC_KEY object using a named curve as underlying
1004 * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL
1005 * library context and property query string.
1006 * \param nid NID of the named curve.
1007 * \return EC_KEY object or NULL if an error occurred.
1008 */
1009OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid);
1010
1011/** Frees a EC_KEY object.
1012 * \param key EC_KEY object to be freed.
1013 */
1014OSSL_DEPRECATEDIN_3_0 void EC_KEY_free(EC_KEY *key);
1015
1016/** Copies a EC_KEY object.
1017 * \param dst destination EC_KEY object
1018 * \param src src EC_KEY object
1019 * \return dst or NULL if an error occurred.
1020 */
1021OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
1022
1023/** Creates a new EC_KEY object and copies the content from src to it.
1024 * \param src the source EC_KEY object
1025 * \return newly created EC_KEY object or NULL if an error occurred.
1026 */
1027OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_dup(const EC_KEY *src);
1028
1029/** Increases the internal reference count of a EC_KEY object.
1030 * \param key EC_KEY object
1031 * \return 1 on success and 0 if an error occurred.
1032 */
1033OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key);
1034
1035/** Returns the ENGINE object of a EC_KEY object
1036 * \param eckey EC_KEY object
1037 * \return the ENGINE object (possibly NULL).
1038 */
1039OSSL_DEPRECATEDIN_3_0 ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey);
1040
1041/** Returns the EC_GROUP object of a EC_KEY object
1042 * \param key EC_KEY object
1043 * \return the EC_GROUP object (possibly NULL).
1044 */
1045OSSL_DEPRECATEDIN_3_0 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
1046
1047/** Sets the EC_GROUP of a EC_KEY object.
1048 * \param key EC_KEY object
1049 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
1050 * object will use an own copy of the EC_GROUP).
1051 * \return 1 on success and 0 if an error occurred.
1052 */
1053OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
1054
1055/** Returns the private key of a EC_KEY object.
1056 * \param key EC_KEY object
1057 * \return a BIGNUM with the private key (possibly NULL).
1058 */
1059OSSL_DEPRECATEDIN_3_0 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
1060
1061/** Sets the private key of a EC_KEY object.
1062 * \param key EC_KEY object
1063 * \param prv BIGNUM with the private key (note: the EC_KEY object
1064 * will use an own copy of the BIGNUM).
1065 * \return 1 on success and 0 if an error occurred.
1066 */
1067OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
1068
1069/** Returns the public key of a EC_KEY object.
1070 * \param key the EC_KEY object
1071 * \return a EC_POINT object with the public key (possibly NULL)
1072 */
1073OSSL_DEPRECATEDIN_3_0 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
1074
1075/** Sets the public key of a EC_KEY object.
1076 * \param key EC_KEY object
1077 * \param pub EC_POINT object with the public key (note: the EC_KEY object
1078 * will use an own copy of the EC_POINT object).
1079 * \return 1 on success and 0 if an error occurred.
1080 */
1081OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
1082
1083OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
1084OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
1085OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
1086OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey,
1087 point_conversion_form_t cform);
1088#endif /*OPENSSL_NO_DEPRECATED_3_0 */
1089
1090#define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
1091 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
1092
1093#ifndef OPENSSL_NO_DEPRECATED_3_0
1094OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
1095OSSL_DEPRECATEDIN_3_0 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
1096
1097/* wrapper functions for the underlying EC_GROUP object */
1098OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
1099
1100/** Creates a table of pre-computed multiples of the generator to
1101 * accelerate further EC_KEY operations.
1102 * \param key EC_KEY object
1103 * \param ctx BN_CTX object (optional)
1104 * \return 1 on success and 0 if an error occurred.
1105 */
1106OSSL_DEPRECATEDIN_3_0 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
1107
1108/** Creates a new ec private (and optional a new public) key.
1109 * \param key EC_KEY object
1110 * \return 1 on success and 0 if an error occurred.
1111 */
1112OSSL_DEPRECATEDIN_3_0 int EC_KEY_generate_key(EC_KEY *key);
1113
1114/** Verifies that a private and/or public key is valid.
1115 * \param key the EC_KEY object
1116 * \return 1 on success and 0 otherwise.
1117 */
1118OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key);
1119
1120/** Indicates if an EC_KEY can be used for signing.
1121 * \param eckey the EC_KEY object
1122 * \return 1 if can sign and 0 otherwise.
1123 */
1124OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey);
1125
1126/** Sets a public key from affine coordinates performing
1127 * necessary NIST PKV tests.
1128 * \param key the EC_KEY object
1129 * \param x public key x coordinate
1130 * \param y public key y coordinate
1131 * \return 1 on success and 0 otherwise.
1132 */
1133OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
1134 BIGNUM *x,
1135 BIGNUM *y);
1136
1137/** Encodes an EC_KEY public key to an allocated octet string
1138 * \param key key to encode
1139 * \param form point conversion form
1140 * \param pbuf returns pointer to allocated buffer
1141 * \param ctx BN_CTX object (optional)
1142 * \return the length of the encoded octet string or 0 if an error occurred
1143 */
1144OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key,
1145 point_conversion_form_t form,
1146 unsigned char **pbuf, BN_CTX *ctx);
1147
1148/** Decodes a EC_KEY public key from a octet string
1149 * \param key key to decode
1150 * \param buf memory buffer with the encoded ec point
1151 * \param len length of the encoded ec point
1152 * \param ctx BN_CTX object (optional)
1153 * \return 1 on success and 0 if an error occurred
1154 */
1155
1156OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf,
1157 size_t len, BN_CTX *ctx);
1158
1159/** Decodes an EC_KEY private key from an octet string
1160 * \param key key to decode
1161 * \param buf memory buffer with the encoded private key
1162 * \param len length of the encoded key
1163 * \return 1 on success and 0 if an error occurred
1164 */
1165
1166OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf,
1167 size_t len);
1168
1169/** Encodes a EC_KEY private key to an octet string
1170 * \param key key to encode
1171 * \param buf memory buffer for the result. If NULL the function returns
1172 * required buffer size.
1173 * \param len length of the memory buffer
1174 * \return the length of the encoded octet string or 0 if an error occurred
1175 */
1176
1177OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key,
1178 unsigned char *buf, size_t len);
1179
1180/** Encodes an EC_KEY private key to an allocated octet string
1181 * \param eckey key to encode
1182 * \param pbuf returns pointer to allocated buffer
1183 * \return the length of the encoded octet string or 0 if an error occurred
1184 */
1185OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey,
1186 unsigned char **pbuf);
1187
1188/********************************************************************/
1189/* de- and encoding functions for SEC1 ECPrivateKey */
1190/********************************************************************/
1191
1192/** Decodes a private key from a memory buffer.
1193 * \param key a pointer to a EC_KEY object which should be used (or NULL)
1194 * \param in pointer to memory with the DER encoded private key
1195 * \param len length of the DER encoded private key
1196 * \return the decoded private key or NULL if an error occurred.
1197 */
1198OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECPrivateKey(EC_KEY **key,
1199 const unsigned char **in,
1200 long len);
1201
1202/** Encodes a private key object and stores the result in a buffer.
1203 * \param key the EC_KEY object to encode
1204 * \param out the buffer for the result (if NULL the function returns number
1205 * of bytes needed).
1206 * \return 1 on success and 0 if an error occurred.
1207 */
1208OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const EC_KEY *key,
1209 unsigned char **out);
1210
1211/********************************************************************/
1212/* de- and encoding functions for EC parameters */
1213/********************************************************************/
1214
1215/** Decodes ec parameter from a memory buffer.
1216 * \param key a pointer to a EC_KEY object which should be used (or NULL)
1217 * \param in pointer to memory with the DER encoded ec parameters
1218 * \param len length of the DER encoded ec parameters
1219 * \return a EC_KEY object with the decoded parameters or NULL if an error
1220 * occurred.
1221 */
1222OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECParameters(EC_KEY **key,
1223 const unsigned char **in,
1224 long len);
1225
1226/** Encodes ec parameter and stores the result in a buffer.
1227 * \param key the EC_KEY object with ec parameters to encode
1228 * \param out the buffer for the result (if NULL the function returns number
1229 * of bytes needed).
1230 * \return 1 on success and 0 if an error occurred.
1231 */
1232OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key,
1233 unsigned char **out);
1234
1235/********************************************************************/
1236/* de- and encoding functions for EC public key */
1237/* (octet string, not DER -- hence 'o2i' and 'i2o') */
1238/********************************************************************/
1239
1240/** Decodes an ec public key from a octet string.
1241 * \param key a pointer to a EC_KEY object which should be used
1242 * \param in memory buffer with the encoded public key
1243 * \param len length of the encoded public key
1244 * \return EC_KEY object with decoded public key or NULL if an error
1245 * occurred.
1246 */
1247OSSL_DEPRECATEDIN_3_0 EC_KEY *o2i_ECPublicKey(EC_KEY **key,
1248 const unsigned char **in, long len);
1249
1250/** Encodes an ec public key in an octet string.
1251 * \param key the EC_KEY object with the public key
1252 * \param out the buffer for the result (if NULL the function returns number
1253 * of bytes needed).
1254 * \return 1 on success and 0 if an error occurred
1255 */
1256OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out);
1257
1258/** Prints out the ec parameters on human readable form.
1259 * \param bp BIO object to which the information is printed
1260 * \param key EC_KEY object
1261 * \return 1 on success and 0 if an error occurred
1262 */
1263OSSL_DEPRECATEDIN_3_0 int ECParameters_print(BIO *bp, const EC_KEY *key);
1264
1265/** Prints out the contents of a EC_KEY object
1266 * \param bp BIO object to which the information is printed
1267 * \param key EC_KEY object
1268 * \param off line offset
1269 * \return 1 on success and 0 if an error occurred
1270 */
1271OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
1272
1273#ifndef OPENSSL_NO_STDIO
1274/** Prints out the ec parameters on human readable form.
1275 * \param fp file descriptor to which the information is printed
1276 * \param key EC_KEY object
1277 * \return 1 on success and 0 if an error occurred
1278 */
1279OSSL_DEPRECATEDIN_3_0 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
1280
1281/** Prints out the contents of a EC_KEY object
1282 * \param fp file descriptor to which the information is printed
1283 * \param key EC_KEY object
1284 * \param off line offset
1285 * \return 1 on success and 0 if an error occurred
1286 */
1287OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
1288#endif /* OPENSSL_NO_STDIO */
1289
1290OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1291OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1292OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
1293OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
1294OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
1295OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_method(ENGINE *engine);
1296
1297/** The old name for ecdh_KDF_X9_63
1298 * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62,
1299 * it is actually specified in ANSI X9.63.
1300 * This identifier is retained for backwards compatibility
1301 */
1302OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
1303 const unsigned char *Z, size_t Zlen,
1304 const unsigned char *sinfo,
1305 size_t sinfolen, const EVP_MD *md);
1306
1307OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen,
1308 const EC_POINT *pub_key,
1309 const EC_KEY *ecdh,
1310 void *(*KDF)(const void *in,
1311 size_t inlen, void *out,
1312 size_t *outlen));
1313#endif /* OPENSSL_NO_DEPRECATED_3_0 */
1314
1315typedef struct ECDSA_SIG_st ECDSA_SIG;
1316
1317/** Allocates and initialize a ECDSA_SIG structure
1318 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1319 */
1320ECDSA_SIG *ECDSA_SIG_new(void);
1321
1322/** frees a ECDSA_SIG structure
1323 * \param sig pointer to the ECDSA_SIG structure
1324 */
1325void ECDSA_SIG_free(ECDSA_SIG *sig);
1326
1327/** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp
1328 * (*pp += length of the DER encoded signature)).
1329 * \param sig pointer to the ECDSA_SIG object
1330 * \param pp pointer to a unsigned char pointer for the output or NULL
1331 * \return the length of the DER encoded ECDSA_SIG object or a negative value
1332 * on error
1333 */
1334DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG)
1335
1336/** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp
1337 * (*pp += len)).
1338 * \param sig pointer to ECDSA_SIG pointer (may be NULL)
1339 * \param pp memory buffer with the DER encoded signature
1340 * \param len length of the buffer
1341 * \return pointer to the decoded ECDSA_SIG structure (or NULL)
1342 */
1343
1344/** Accessor for r and s fields of ECDSA_SIG
1345 * \param sig pointer to ECDSA_SIG structure
1346 * \param pr pointer to BIGNUM pointer for r (may be NULL)
1347 * \param ps pointer to BIGNUM pointer for s (may be NULL)
1348 */
1349void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
1350
1351/** Accessor for r field of ECDSA_SIG
1352 * \param sig pointer to ECDSA_SIG structure
1353 */
1354const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
1355
1356/** Accessor for s field of ECDSA_SIG
1357 * \param sig pointer to ECDSA_SIG structure
1358 */
1359const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
1360
1361/** Setter for r and s fields of ECDSA_SIG
1362 * \param sig pointer to ECDSA_SIG structure
1363 * \param r pointer to BIGNUM for r
1364 * \param s pointer to BIGNUM for s
1365 */
1366int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
1367
1368#ifndef OPENSSL_NO_DEPRECATED_3_0
1369/** Computes the ECDSA signature of the given hash value using
1370 * the supplied private key and returns the created signature.
1371 * \param dgst pointer to the hash value
1372 * \param dgst_len length of the hash value
1373 * \param eckey EC_KEY object containing a private EC key
1374 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1375 */
1376OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst,
1377 int dgst_len, EC_KEY *eckey);
1378
1379/** Computes ECDSA signature of a given hash value using the supplied
1380 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1381 * \param dgst pointer to the hash value to sign
1382 * \param dgstlen length of the hash value
1383 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1384 * \param rp BIGNUM with a pre-computed rp value (optional),
1385 * see ECDSA_sign_setup
1386 * \param eckey EC_KEY object containing a private EC key
1387 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1388 */
1389OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst,
1390 int dgstlen, const BIGNUM *kinv,
1391 const BIGNUM *rp, EC_KEY *eckey);
1392
1393/** Verifies that the supplied signature is a valid ECDSA
1394 * signature of the supplied hash value using the supplied public key.
1395 * \param dgst pointer to the hash value
1396 * \param dgst_len length of the hash value
1397 * \param sig ECDSA_SIG structure
1398 * \param eckey EC_KEY object containing a public EC key
1399 * \return 1 if the signature is valid, 0 if the signature is invalid
1400 * and -1 on error
1401 */
1402OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1403 const ECDSA_SIG *sig, EC_KEY *eckey);
1404
1405/** Precompute parts of the signing operation
1406 * \param eckey EC_KEY object containing a private EC key
1407 * \param ctx BN_CTX object (optional)
1408 * \param kinv BIGNUM pointer for the inverse of k
1409 * \param rp BIGNUM pointer for x coordinate of k * generator
1410 * \return 1 on success and 0 otherwise
1411 */
1412OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx,
1413 BIGNUM **kinv, BIGNUM **rp);
1414
1415/** Computes ECDSA signature of a given hash value using the supplied
1416 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1417 * \param type this parameter is ignored
1418 * \param dgst pointer to the hash value to sign
1419 * \param dgstlen length of the hash value
1420 * \param sig memory for the DER encoded created signature
1421 * \param siglen pointer to the length of the returned signature
1422 * \param eckey EC_KEY object containing a private EC key
1423 * \return 1 on success and 0 otherwise
1424 */
1425OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst,
1426 int dgstlen, unsigned char *sig,
1427 unsigned int *siglen, EC_KEY *eckey);
1428
1429/** Computes ECDSA signature of a given hash value using the supplied
1430 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1431 * \param type this parameter is ignored
1432 * \param dgst pointer to the hash value to sign
1433 * \param dgstlen length of the hash value
1434 * \param sig buffer to hold the DER encoded signature
1435 * \param siglen pointer to the length of the returned signature
1436 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1437 * \param rp BIGNUM with a pre-computed rp value (optional),
1438 * see ECDSA_sign_setup
1439 * \param eckey EC_KEY object containing a private EC key
1440 * \return 1 on success and 0 otherwise
1441 */
1442OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst,
1443 int dgstlen, unsigned char *sig,
1444 unsigned int *siglen, const BIGNUM *kinv,
1445 const BIGNUM *rp, EC_KEY *eckey);
1446
1447/** Verifies that the given signature is valid ECDSA signature
1448 * of the supplied hash value using the specified public key.
1449 * \param type this parameter is ignored
1450 * \param dgst pointer to the hash value
1451 * \param dgstlen length of the hash value
1452 * \param sig pointer to the DER encoded signature
1453 * \param siglen length of the DER encoded signature
1454 * \param eckey EC_KEY object containing a public EC key
1455 * \return 1 if the signature is valid, 0 if the signature is invalid
1456 * and -1 on error
1457 */
1458OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst,
1459 int dgstlen, const unsigned char *sig,
1460 int siglen, EC_KEY *eckey);
1461
1462/** Returns the maximum length of the DER encoded signature
1463 * \param eckey EC_KEY object
1464 * \return numbers of bytes required for the DER encoded signature
1465 */
1466OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey);
1467
1468/********************************************************************/
1469/* EC_KEY_METHOD constructors, destructors, writers and accessors */
1470/********************************************************************/
1471
1472OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
1473OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1474OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
1475 int (*init)(EC_KEY *key),
1476 void (*finish)(EC_KEY *key),
1477 int (*copy)(EC_KEY *dest, const EC_KEY *src),
1478 int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
1479 int (*set_private)(EC_KEY *key, const BIGNUM *priv_key),
1480 int (*set_public)(EC_KEY *key, const EC_POINT *pub_key));
1481
1482OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1483 int (*keygen)(EC_KEY *key));
1484
1485OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
1486 int (*ckey)(unsigned char **psec, size_t *pseclen,
1487 const EC_POINT *pub_key, const EC_KEY *ecdh));
1488
1489OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
1490 int (*sign)(int type, const unsigned char *dgst,
1491 int dlen, unsigned char *sig,
1492 unsigned int *siglen,
1493 const BIGNUM *kinv, const BIGNUM *r,
1494 EC_KEY *eckey),
1495 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1496 BIGNUM **kinvp, BIGNUM **rp),
1497 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
1498 int dgst_len,
1499 const BIGNUM *in_kinv,
1500 const BIGNUM *in_r,
1501 EC_KEY *eckey));
1502
1503OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,
1504 int (*verify)(int type, const unsigned char *dgst, int dgst_len,
1505 const unsigned char *sigbuf,
1506 int sig_len, EC_KEY *eckey),
1507 int (*verify_sig)(const unsigned char *dgst,
1508 int dgst_len, const ECDSA_SIG *sig,
1509 EC_KEY *eckey));
1510
1511OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_init(const EC_KEY_METHOD *meth,
1512 int (**pinit)(EC_KEY *key),
1513 void (**pfinish)(EC_KEY *key),
1514 int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
1515 int (**pset_group)(EC_KEY *key, const EC_GROUP *grp),
1516 int (**pset_private)(EC_KEY *key, const BIGNUM *priv_key),
1517 int (**pset_public)(EC_KEY *key, const EC_POINT *pub_key));
1518
1519OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth, int (**pkeygen)(EC_KEY *key));
1520
1521OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key(const EC_KEY_METHOD *meth,
1522 int (**pck)(unsigned char **psec,
1523 size_t *pseclen,
1524 const EC_POINT *pub_key,
1525 const EC_KEY *ecdh));
1526
1527OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign(const EC_KEY_METHOD *meth,
1528 int (**psign)(int type, const unsigned char *dgst,
1529 int dlen, unsigned char *sig,
1530 unsigned int *siglen,
1531 const BIGNUM *kinv, const BIGNUM *r,
1532 EC_KEY *eckey),
1533 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1534 BIGNUM **kinvp, BIGNUM **rp),
1535 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
1536 int dgst_len,
1537 const BIGNUM *in_kinv,
1538 const BIGNUM *in_r,
1539 EC_KEY *eckey));
1540
1541OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify(const EC_KEY_METHOD *meth,
1542 int (**pverify)(int type, const unsigned char *dgst, int dgst_len,
1543 const unsigned char *sigbuf,
1544 int sig_len, EC_KEY *eckey),
1545 int (**pverify_sig)(const unsigned char *dgst,
1546 int dgst_len,
1547 const ECDSA_SIG *sig,
1548 EC_KEY *eckey));
1549#endif /* OPENSSL_NO_DEPRECATED_3_0 */
1550
1551#define EVP_EC_gen(curve) \
1552 EVP_PKEY_Q_keygen(NULL, NULL, "EC", (char *)(strstr(curve, "")))
1553/* strstr is used to enable type checking for the variadic string arg */
1554#define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \
1555 d2i_ECParameters, x)
1556
1557#ifndef __cplusplus
1558#if defined(__SUNPRO_C)
1559#if __SUNPRO_C >= 0x520
1560#pragma error_messages(default, E_ARRAY_OF_INCOMPLETE_NONAME, E_ARRAY_OF_INCOMPLETE)
1561#endif
1562#endif
1563#endif
1564
1565#endif
1566#ifdef __cplusplus
1567}
1568#endif
1569#endif
1570