ec.h@ 97673

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1	/*
2	* Copyright 2002-2022 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
26	extern "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
33	int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid);
34	int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc);
35	int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode);
36	int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx);
37
38	int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf);
39	int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx);
40
41	int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX ctx, const EVP_MD md);
42	int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX ctx, const EVP_MD *md);
43
44	int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len);
45	int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX ctx, int len);
46
47	int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX ctx, unsigned char ukm,
48	int len);
49	# ifndef OPENSSL_NO_DEPRECATED_3_0
50	OSSL_DEPRECATEDIN_3_0
51	int 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) */
78	typedef 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
89	const char *OSSL_EC_curve_nid2name(int nid);
90
91	# ifndef OPENSSL_NO_EC
92	# include <openssl/asn1.h>
93	# include <openssl/symhacks.h>
94	# ifndef OPENSSL_NO_DEPRECATED_1_1_0
95	# include <openssl/bn.h>
96	# endif
97	# include <openssl/ecerr.h>
98
99	# ifndef OPENSSL_ECC_MAX_FIELD_BITS
100	# define OPENSSL_ECC_MAX_FIELD_BITS 661
101	# endif
102
103	# include <openssl/params.h>
104	# ifndef OPENSSL_NO_DEPRECATED_3_0
105	typedef struct ec_method_st EC_METHOD;
106	# endif
107	typedef struct ec_group_st EC_GROUP;
108	typedef struct ec_point_st EC_POINT;
109	typedef struct ecpk_parameters_st ECPKPARAMETERS;
110	typedef struct ec_parameters_st ECPARAMETERS;
111
112	/********************************************************************/
113	/* EC_METHODs for curves over GF(p) */
114	/********************************************************************/
115
116	# ifndef OPENSSL_NO_DEPRECATED_3_0
117	/** Returns the basic GFp ec methods which provides the basis for the
118	* optimized methods.
119	* \return EC_METHOD object
120	*/
121	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_simple_method(void);
122
123	/** Returns GFp methods using montgomery multiplication.
124	* \return EC_METHOD object
125	*/
126	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_mont_method(void);
127
128	/** Returns GFp methods using optimized methods for NIST recommended curves
129	* \return EC_METHOD object
130	*/
131	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nist_method(void);
132
133	# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
134	/** Returns 64-bit optimized methods for nistp224
135	* \return EC_METHOD object
136	*/
137	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp224_method(void);
138
139	/** Returns 64-bit optimized methods for nistp256
140	* \return EC_METHOD object
141	*/
142	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp256_method(void);
143
144	/** Returns 64-bit optimized methods for nistp521
145	* \return EC_METHOD object
146	*/
147	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp521_method(void);
148	# endif /* OPENSSL_NO_EC_NISTP_64_GCC_128 */
149
150	# ifndef OPENSSL_NO_EC2M
151	/********************************************************************/
152	/* EC_METHOD for curves over GF(2^m) */
153	/********************************************************************/
154
155	/** Returns the basic GF2m ec method
156	* \return EC_METHOD object
157	*/
158	OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GF2m_simple_method(void);
159
160	# endif
161
162	/********************************************************************/
163	/* EC_GROUP functions */
164	/********************************************************************/
165
166	/**
167	* Creates a new EC_GROUP object
168	* \param meth EC_METHOD to use
169	* \return newly created EC_GROUP object or NULL in case of an error.
170	*/
171	OSSL_DEPRECATEDIN_3_0 EC_GROUP EC_GROUP_new(const EC_METHOD meth);
172
173	/** Clears and frees a EC_GROUP object
174	* \param group EC_GROUP object to be cleared and freed.
175	*/
176	OSSL_DEPRECATEDIN_3_0 void EC_GROUP_clear_free(EC_GROUP *group);
177
178	/** Returns the EC_METHOD of the EC_GROUP object.
179	* \param group EC_GROUP object
180	* \return EC_METHOD used in this EC_GROUP object.
181	*/
182	OSSL_DEPRECATEDIN_3_0 const EC_METHOD EC_GROUP_method_of(const EC_GROUP group);
183
184	/** Returns the field type of the EC_METHOD.
185	* \param meth EC_METHOD object
186	* \return NID of the underlying field type OID.
187	*/
188	OSSL_DEPRECATEDIN_3_0 int EC_METHOD_get_field_type(const EC_METHOD *meth);
189	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
190
191	/** Frees a EC_GROUP object
192	* \param group EC_GROUP object to be freed.
193	*/
194	void EC_GROUP_free(EC_GROUP *group);
195
196	/** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
197	* \param dst destination EC_GROUP object
198	* \param src source EC_GROUP object
199	* \return 1 on success and 0 if an error occurred.
200	*/
201	int EC_GROUP_copy(EC_GROUP dst, const EC_GROUP src);
202
203	/** Creates a new EC_GROUP object and copies the content
204	* form src to the newly created EC_KEY object
205	* \param src source EC_GROUP object
206	* \return newly created EC_GROUP object or NULL in case of an error.
207	*/
208	EC_GROUP EC_GROUP_dup(const EC_GROUP src);
209
210	/** Sets the generator and its order/cofactor of a EC_GROUP object.
211	* \param group EC_GROUP object
212	* \param generator EC_POINT object with the generator.
213	* \param order the order of the group generated by the generator.
214	* \param cofactor the index of the sub-group generated by the generator
215	* in the group of all points on the elliptic curve.
216	* \return 1 on success and 0 if an error occurred
217	*/
218	int EC_GROUP_set_generator(EC_GROUP group, const EC_POINT generator,
219	const BIGNUM order, const BIGNUM cofactor);
220
221	/** Returns the generator of a EC_GROUP object.
222	* \param group EC_GROUP object
223	* \return the currently used generator (possibly NULL).
224	*/
225	const EC_POINT EC_GROUP_get0_generator(const EC_GROUP group);
226
227	/** Returns the montgomery data for order(Generator)
228	* \param group EC_GROUP object
229	* \return the currently used montgomery data (possibly NULL).
230	*/
231	BN_MONT_CTX EC_GROUP_get_mont_data(const EC_GROUP group);
232
233	/** Gets the order of a EC_GROUP
234	* \param group EC_GROUP object
235	* \param order BIGNUM to which the order is copied
236	* \param ctx unused
237	* \return 1 on success and 0 if an error occurred
238	*/
239	int EC_GROUP_get_order(const EC_GROUP group, BIGNUM order, BN_CTX *ctx);
240
241	/** Gets the order of an EC_GROUP
242	* \param group EC_GROUP object
243	* \return the group order
244	*/
245	const BIGNUM EC_GROUP_get0_order(const EC_GROUP group);
246
247	/** Gets the number of bits of the order of an EC_GROUP
248	* \param group EC_GROUP object
249	* \return number of bits of group order.
250	*/
251	int EC_GROUP_order_bits(const EC_GROUP *group);
252
253	/** Gets the cofactor of a EC_GROUP
254	* \param group EC_GROUP object
255	* \param cofactor BIGNUM to which the cofactor is copied
256	* \param ctx unused
257	* \return 1 on success and 0 if an error occurred
258	*/
259	int EC_GROUP_get_cofactor(const EC_GROUP group, BIGNUM cofactor,
260	BN_CTX *ctx);
261
262	/** Gets the cofactor of an EC_GROUP
263	* \param group EC_GROUP object
264	* \return the group cofactor
265	*/
266	const BIGNUM EC_GROUP_get0_cofactor(const EC_GROUP group);
267
268	/** Sets the name of a EC_GROUP object
269	* \param group EC_GROUP object
270	* \param nid NID of the curve name OID
271	*/
272	void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
273
274	/** Returns the curve name of a EC_GROUP object
275	* \param group EC_GROUP object
276	* \return NID of the curve name OID or 0 if not set.
277	*/
278	int EC_GROUP_get_curve_name(const EC_GROUP *group);
279
280	/** Gets the field of an EC_GROUP
281	* \param group EC_GROUP object
282	* \return the group field
283	*/
284	const BIGNUM EC_GROUP_get0_field(const EC_GROUP group);
285
286	/** Returns the field type of the EC_GROUP.
287	* \param group EC_GROUP object
288	* \return NID of the underlying field type OID.
289	*/
290	int EC_GROUP_get_field_type(const EC_GROUP *group);
291
292	void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
293	int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
294
295	void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
296	point_conversion_form_t form);
297	point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
298
299	unsigned char EC_GROUP_get0_seed(const EC_GROUP x);
300	size_t EC_GROUP_get_seed_len(const EC_GROUP *);
301	size_t EC_GROUP_set_seed(EC_GROUP , const unsigned char , size_t len);
302
303	/** Sets the parameters of an ec curve defined by y^2 = x^3 + a*x + b (for GFp)
304	* or y^2 + xy = x^3 + ax^2 + b (for GF2m)
305	* \param group EC_GROUP object
306	* \param p BIGNUM with the prime number (GFp) or the polynomial
307	* defining the underlying field (GF2m)
308	* \param a BIGNUM with parameter a of the equation
309	* \param b BIGNUM with parameter b of the equation
310	* \param ctx BN_CTX object (optional)
311	* \return 1 on success and 0 if an error occurred
312	*/
313	int EC_GROUP_set_curve(EC_GROUP group, const BIGNUM p, const BIGNUM *a,
314	const BIGNUM b, BN_CTX ctx);
315
316	/** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp)
317	* or y^2 + xy = x^3 + ax^2 + b (for GF2m)
318	* \param group EC_GROUP object
319	* \param p BIGNUM with the prime number (GFp) or the polynomial
320	* defining the underlying field (GF2m)
321	* \param a BIGNUM for parameter a of the equation
322	* \param b BIGNUM for parameter b of the equation
323	* \param ctx BN_CTX object (optional)
324	* \return 1 on success and 0 if an error occurred
325	*/
326	int EC_GROUP_get_curve(const EC_GROUP group, BIGNUM p, BIGNUM a, BIGNUM b,
327	BN_CTX *ctx);
328
329	# ifndef OPENSSL_NO_DEPRECATED_3_0
330	/** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve
331	* \param group EC_GROUP object
332	* \param p BIGNUM with the prime number (GFp) or the polynomial
333	* defining the underlying field (GF2m)
334	* \param a BIGNUM with parameter a of the equation
335	* \param b BIGNUM with parameter b of the equation
336	* \param ctx BN_CTX object (optional)
337	* \return 1 on success and 0 if an error occurred
338	*/
339	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GFp(EC_GROUP *group,
340	const BIGNUM *p,
341	const BIGNUM *a,
342	const BIGNUM *b,
343	BN_CTX *ctx);
344
345	/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
346	* \param group EC_GROUP object
347	* \param p BIGNUM with the prime number (GFp) or the polynomial
348	* defining the underlying field (GF2m)
349	* \param a BIGNUM for parameter a of the equation
350	* \param b BIGNUM for parameter b of the equation
351	* \param ctx BN_CTX object (optional)
352	* \return 1 on success and 0 if an error occurred
353	*/
354	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GFp(const EC_GROUP *group,
355	BIGNUM *p,
356	BIGNUM a, BIGNUM b,
357	BN_CTX *ctx);
358
359	# ifndef OPENSSL_NO_EC2M
360	/** Sets the parameter of an ec curve. Synonym for EC_GROUP_set_curve
361	* \param group EC_GROUP object
362	* \param p BIGNUM with the prime number (GFp) or the polynomial
363	* defining the underlying field (GF2m)
364	* \param a BIGNUM with parameter a of the equation
365	* \param b BIGNUM with parameter b of the equation
366	* \param ctx BN_CTX object (optional)
367	* \return 1 on success and 0 if an error occurred
368	*/
369	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GF2m(EC_GROUP *group,
370	const BIGNUM *p,
371	const BIGNUM *a,
372	const BIGNUM *b,
373	BN_CTX *ctx);
374
375	/** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve
376	* \param group EC_GROUP object
377	* \param p BIGNUM with the prime number (GFp) or the polynomial
378	* defining the underlying field (GF2m)
379	* \param a BIGNUM for parameter a of the equation
380	* \param b BIGNUM for parameter b of the equation
381	* \param ctx BN_CTX object (optional)
382	* \return 1 on success and 0 if an error occurred
383	*/
384	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group,
385	BIGNUM *p,
386	BIGNUM a, BIGNUM b,
387	BN_CTX *ctx);
388	# endif /* OPENSSL_NO_EC2M */
389	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
390
391	/** Returns the number of bits needed to represent a field element
392	* \param group EC_GROUP object
393	* \return number of bits needed to represent a field element
394	*/
395	int EC_GROUP_get_degree(const EC_GROUP *group);
396
397	/** Checks whether the parameter in the EC_GROUP define a valid ec group
398	* \param group EC_GROUP object
399	* \param ctx BN_CTX object (optional)
400	* \return 1 if group is a valid ec group and 0 otherwise
401	*/
402	int EC_GROUP_check(const EC_GROUP group, BN_CTX ctx);
403
404	/** Checks whether the discriminant of the elliptic curve is zero or not
405	* \param group EC_GROUP object
406	* \param ctx BN_CTX object (optional)
407	* \return 1 if the discriminant is not zero and 0 otherwise
408	*/
409	int EC_GROUP_check_discriminant(const EC_GROUP group, BN_CTX ctx);
410
411	/** Compares two EC_GROUP objects
412	* \param a first EC_GROUP object
413	* \param b second EC_GROUP object
414	* \param ctx BN_CTX object (optional)
415	* \return 0 if the groups are equal, 1 if not, or -1 on error
416	*/
417	int EC_GROUP_cmp(const EC_GROUP a, const EC_GROUP b, BN_CTX *ctx);
418
419	/*
420	* EC_GROUP_new_GF() calls EC_GROUP_new() and EC_GROUP_set_GF() after
421	* choosing an appropriate EC_METHOD
422	*/
423
424	/** Creates a new EC_GROUP object with the specified parameters defined
425	* over GFp (defined by the equation y^2 = x^3 + a*x + b)
426	* \param p BIGNUM with the prime number
427	* \param a BIGNUM with the parameter a of the equation
428	* \param b BIGNUM with the parameter b of the equation
429	* \param ctx BN_CTX object (optional)
430	* \return newly created EC_GROUP object with the specified parameters
431	*/
432	EC_GROUP EC_GROUP_new_curve_GFp(const BIGNUM p, const BIGNUM *a,
433	const BIGNUM b, BN_CTX ctx);
434	# ifndef OPENSSL_NO_EC2M
435	/** Creates a new EC_GROUP object with the specified parameters defined
436	* over GF2m (defined by the equation y^2 + xy = x^3 + ax^2 + b)
437	* \param p BIGNUM with the polynomial defining the underlying field
438	* \param a BIGNUM with the parameter a of the equation
439	* \param b BIGNUM with the parameter b of the equation
440	* \param ctx BN_CTX object (optional)
441	* \return newly created EC_GROUP object with the specified parameters
442	*/
443	EC_GROUP EC_GROUP_new_curve_GF2m(const BIGNUM p, const BIGNUM *a,
444	const BIGNUM b, BN_CTX ctx);
445	# endif
446
447	/**
448	* Creates a EC_GROUP object with a curve specified by parameters.
449	* The parameters may be explicit or a named curve,
450	* \param params A list of parameters describing the group.
451	* \param libctx The associated library context or NULL for the default
452	* context
453	* \param propq A property query string
454	* \return newly created EC_GROUP object with specified parameters or NULL
455	* if an error occurred
456	*/
457	EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
458	OSSL_LIB_CTX libctx, const char propq);
459
460	/**
461	* Creates a EC_GROUP object with a curve specified by a NID
462	* \param libctx The associated library context or NULL for the default
463	* context
464	* \param propq A property query string
465	* \param nid NID of the OID of the curve name
466	* \return newly created EC_GROUP object with specified curve or NULL
467	* if an error occurred
468	*/
469	EC_GROUP EC_GROUP_new_by_curve_name_ex(OSSL_LIB_CTX libctx, const char *propq,
470	int nid);
471
472	/**
473	* Creates a EC_GROUP object with a curve specified by a NID. Same as
474	* EC_GROUP_new_by_curve_name_ex but the libctx and propq are always
475	* NULL.
476	* \param nid NID of the OID of the curve name
477	* \return newly created EC_GROUP object with specified curve or NULL
478	* if an error occurred
479	*/
480	EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
481
482	/** Creates a new EC_GROUP object from an ECPARAMETERS object
483	* \param params pointer to the ECPARAMETERS object
484	* \return newly created EC_GROUP object with specified curve or NULL
485	* if an error occurred
486	*/
487	EC_GROUP EC_GROUP_new_from_ecparameters(const ECPARAMETERS params);
488
489	/** Creates an ECPARAMETERS object for the given EC_GROUP object.
490	* \param group pointer to the EC_GROUP object
491	* \param params pointer to an existing ECPARAMETERS object or NULL
492	* \return pointer to the new ECPARAMETERS object or NULL
493	* if an error occurred.
494	*/
495	ECPARAMETERS EC_GROUP_get_ecparameters(const EC_GROUP group,
496	ECPARAMETERS *params);
497
498	/** Creates a new EC_GROUP object from an ECPKPARAMETERS object
499	* \param params pointer to an existing ECPKPARAMETERS object, or NULL
500	* \return newly created EC_GROUP object with specified curve, or NULL
501	* if an error occurred
502	*/
503	EC_GROUP EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS params);
504
505	/** Creates an ECPKPARAMETERS object for the given EC_GROUP object.
506	* \param group pointer to the EC_GROUP object
507	* \param params pointer to an existing ECPKPARAMETERS object or NULL
508	* \return pointer to the new ECPKPARAMETERS object or NULL
509	* if an error occurred.
510	*/
511	ECPKPARAMETERS EC_GROUP_get_ecpkparameters(const EC_GROUP group,
512	ECPKPARAMETERS *params);
513
514	/********************************************************************/
515	/* handling of internal curves */
516	/********************************************************************/
517
518	typedef struct {
519	int nid;
520	const char *comment;
521	} EC_builtin_curve;
522
523	/*
524	* EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
525	* available curves or zero if a error occurred. In case r is not zero,
526	* nitems EC_builtin_curve structures are filled with the data of the first
527	* nitems internal groups
528	*/
529	size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
530
531	const char *EC_curve_nid2nist(int nid);
532	int EC_curve_nist2nid(const char *name);
533	int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only,
534	BN_CTX *ctx);
535
536	/********************************************************************/
537	/* EC_POINT functions */
538	/********************************************************************/
539
540	/** Creates a new EC_POINT object for the specified EC_GROUP
541	* \param group EC_GROUP the underlying EC_GROUP object
542	* \return newly created EC_POINT object or NULL if an error occurred
543	*/
544	EC_POINT EC_POINT_new(const EC_GROUP group);
545
546	/** Frees a EC_POINT object
547	* \param point EC_POINT object to be freed
548	*/
549	void EC_POINT_free(EC_POINT *point);
550
551	/** Clears and frees a EC_POINT object
552	* \param point EC_POINT object to be cleared and freed
553	*/
554	void EC_POINT_clear_free(EC_POINT *point);
555
556	/** Copies EC_POINT object
557	* \param dst destination EC_POINT object
558	* \param src source EC_POINT object
559	* \return 1 on success and 0 if an error occurred
560	*/
561	int EC_POINT_copy(EC_POINT dst, const EC_POINT src);
562
563	/** Creates a new EC_POINT object and copies the content of the supplied
564	* EC_POINT
565	* \param src source EC_POINT object
566	* \param group underlying the EC_GROUP object
567	* \return newly created EC_POINT object or NULL if an error occurred
568	*/
569	EC_POINT EC_POINT_dup(const EC_POINT src, const EC_GROUP *group);
570
571	/** Sets a point to infinity (neutral element)
572	* \param group underlying EC_GROUP object
573	* \param point EC_POINT to set to infinity
574	* \return 1 on success and 0 if an error occurred
575	*/
576	int EC_POINT_set_to_infinity(const EC_GROUP group, EC_POINT point);
577
578	# ifndef OPENSSL_NO_DEPRECATED_3_0
579	/** Returns the EC_METHOD used in EC_POINT object
580	* \param point EC_POINT object
581	* \return the EC_METHOD used
582	*/
583	OSSL_DEPRECATEDIN_3_0 const EC_METHOD EC_POINT_method_of(const EC_POINT point);
584
585	/** Sets the jacobian projective coordinates of a EC_POINT over GFp
586	* \param group underlying EC_GROUP object
587	* \param p EC_POINT object
588	* \param x BIGNUM with the x-coordinate
589	* \param y BIGNUM with the y-coordinate
590	* \param z BIGNUM with the z-coordinate
591	* \param ctx BN_CTX object (optional)
592	* \return 1 on success and 0 if an error occurred
593	*/
594	OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_Jprojective_coordinates_GFp
595	(const EC_GROUP group, EC_POINT p,
596	const BIGNUM x, const BIGNUM y, const BIGNUM *z,
597	BN_CTX *ctx);
598
599	/** Gets the jacobian projective coordinates of a EC_POINT over GFp
600	* \param group underlying EC_GROUP object
601	* \param p EC_POINT object
602	* \param x BIGNUM for the x-coordinate
603	* \param y BIGNUM for the y-coordinate
604	* \param z BIGNUM for the z-coordinate
605	* \param ctx BN_CTX object (optional)
606	* \return 1 on success and 0 if an error occurred
607	*/
608	OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp
609	(const EC_GROUP group, const EC_POINT p,
610	BIGNUM x, BIGNUM y, BIGNUM z, BN_CTX ctx);
611	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
612
613	/** Sets the affine coordinates of an EC_POINT
614	* \param group underlying EC_GROUP object
615	* \param p EC_POINT object
616	* \param x BIGNUM with the x-coordinate
617	* \param y BIGNUM with the y-coordinate
618	* \param ctx BN_CTX object (optional)
619	* \return 1 on success and 0 if an error occurred
620	*/
621	int EC_POINT_set_affine_coordinates(const EC_GROUP group, EC_POINT p,
622	const BIGNUM x, const BIGNUM y,
623	BN_CTX *ctx);
624
625	/** Gets the affine coordinates of an EC_POINT.
626	* \param group underlying EC_GROUP object
627	* \param p EC_POINT object
628	* \param x BIGNUM for the x-coordinate
629	* \param y BIGNUM for the y-coordinate
630	* \param ctx BN_CTX object (optional)
631	* \return 1 on success and 0 if an error occurred
632	*/
633	int EC_POINT_get_affine_coordinates(const EC_GROUP group, const EC_POINT p,
634	BIGNUM x, BIGNUM y, BN_CTX *ctx);
635
636	# ifndef OPENSSL_NO_DEPRECATED_3_0
637	/** Sets the affine coordinates of an EC_POINT. A synonym of
638	* EC_POINT_set_affine_coordinates
639	* \param group underlying EC_GROUP object
640	* \param p EC_POINT object
641	* \param x BIGNUM with the x-coordinate
642	* \param y BIGNUM with the y-coordinate
643	* \param ctx BN_CTX object (optional)
644	* \return 1 on success and 0 if an error occurred
645	*/
646	OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GFp
647	(const EC_GROUP group, EC_POINT p,
648	const BIGNUM x, const BIGNUM y, BN_CTX *ctx);
649
650	/** Gets the affine coordinates of an EC_POINT. A synonym of
651	* EC_POINT_get_affine_coordinates
652	* \param group underlying EC_GROUP object
653	* \param p EC_POINT object
654	* \param x BIGNUM for the x-coordinate
655	* \param y BIGNUM for the y-coordinate
656	* \param ctx BN_CTX object (optional)
657	* \return 1 on success and 0 if an error occurred
658	*/
659	OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp
660	(const EC_GROUP group, const EC_POINT p,
661	BIGNUM x, BIGNUM y, BN_CTX *ctx);
662	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
663
664	/** Sets the x9.62 compressed coordinates of a EC_POINT
665	* \param group underlying EC_GROUP object
666	* \param p EC_POINT object
667	* \param x BIGNUM with x-coordinate
668	* \param y_bit integer with the y-Bit (either 0 or 1)
669	* \param ctx BN_CTX object (optional)
670	* \return 1 on success and 0 if an error occurred
671	*/
672	int EC_POINT_set_compressed_coordinates(const EC_GROUP group, EC_POINT p,
673	const BIGNUM *x, int y_bit,
674	BN_CTX *ctx);
675
676	# ifndef OPENSSL_NO_DEPRECATED_3_0
677	/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
678	* EC_POINT_set_compressed_coordinates
679	* \param group underlying EC_GROUP object
680	* \param p EC_POINT object
681	* \param x BIGNUM with x-coordinate
682	* \param y_bit integer with the y-Bit (either 0 or 1)
683	* \param ctx BN_CTX object (optional)
684	* \return 1 on success and 0 if an error occurred
685	*/
686	OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GFp
687	(const EC_GROUP group, EC_POINT p,
688	const BIGNUM x, int y_bit, BN_CTX ctx);
689	# ifndef OPENSSL_NO_EC2M
690	/** Sets the affine coordinates of an EC_POINT. A synonym of
691	* EC_POINT_set_affine_coordinates
692	* \param group underlying EC_GROUP object
693	* \param p EC_POINT object
694	* \param x BIGNUM with the x-coordinate
695	* \param y BIGNUM with the y-coordinate
696	* \param ctx BN_CTX object (optional)
697	* \return 1 on success and 0 if an error occurred
698	*/
699	OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GF2m
700	(const EC_GROUP group, EC_POINT p,
701	const BIGNUM x, const BIGNUM y, BN_CTX *ctx);
702
703	/** Gets the affine coordinates of an EC_POINT. A synonym of
704	* EC_POINT_get_affine_coordinates
705	* \param group underlying EC_GROUP object
706	* \param p EC_POINT object
707	* \param x BIGNUM for the x-coordinate
708	* \param y BIGNUM for the y-coordinate
709	* \param ctx BN_CTX object (optional)
710	* \return 1 on success and 0 if an error occurred
711	*/
712	OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GF2m
713	(const EC_GROUP group, const EC_POINT p,
714	BIGNUM x, BIGNUM y, BN_CTX *ctx);
715
716	/** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
717	* EC_POINT_set_compressed_coordinates
718	* \param group underlying EC_GROUP object
719	* \param p EC_POINT object
720	* \param x BIGNUM with x-coordinate
721	* \param y_bit integer with the y-Bit (either 0 or 1)
722	* \param ctx BN_CTX object (optional)
723	* \return 1 on success and 0 if an error occurred
724	*/
725	OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m
726	(const EC_GROUP group, EC_POINT p,
727	const BIGNUM x, int y_bit, BN_CTX ctx);
728	# endif
729	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
730
731	/** Encodes a EC_POINT object to a octet string
732	* \param group underlying EC_GROUP object
733	* \param p EC_POINT object
734	* \param form point conversion form
735	* \param buf memory buffer for the result. If NULL the function returns
736	* required buffer size.
737	* \param len length of the memory buffer
738	* \param ctx BN_CTX object (optional)
739	* \return the length of the encoded octet string or 0 if an error occurred
740	*/
741	size_t EC_POINT_point2oct(const EC_GROUP group, const EC_POINT p,
742	point_conversion_form_t form,
743	unsigned char buf, size_t len, BN_CTX ctx);
744
745	/** Decodes a EC_POINT from a octet string
746	* \param group underlying EC_GROUP object
747	* \param p EC_POINT object
748	* \param buf memory buffer with the encoded ec point
749	* \param len length of the encoded ec point
750	* \param ctx BN_CTX object (optional)
751	* \return 1 on success and 0 if an error occurred
752	*/
753	int EC_POINT_oct2point(const EC_GROUP group, EC_POINT p,
754	const unsigned char buf, size_t len, BN_CTX ctx);
755
756	/** Encodes an EC_POINT object to an allocated octet string
757	* \param group underlying EC_GROUP object
758	* \param point EC_POINT object
759	* \param form point conversion form
760	* \param pbuf returns pointer to allocated buffer
761	* \param ctx BN_CTX object (optional)
762	* \return the length of the encoded octet string or 0 if an error occurred
763	*/
764	size_t EC_POINT_point2buf(const EC_GROUP group, const EC_POINT point,
765	point_conversion_form_t form,
766	unsigned char *pbuf, BN_CTX ctx);
767
768	/* other interfaces to point2oct/oct2point: */
769	# ifndef OPENSSL_NO_DEPRECATED_3_0
770	OSSL_DEPRECATEDIN_3_0 BIGNUM EC_POINT_point2bn(const EC_GROUP ,
771	const EC_POINT *,
772	point_conversion_form_t form,
773	BIGNUM , BN_CTX );
774	OSSL_DEPRECATEDIN_3_0 EC_POINT EC_POINT_bn2point(const EC_GROUP ,
775	const BIGNUM *,
776	EC_POINT , BN_CTX );
777	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
778
779	char EC_POINT_point2hex(const EC_GROUP , const EC_POINT *,
780	point_conversion_form_t form, BN_CTX *);
781	EC_POINT EC_POINT_hex2point(const EC_GROUP , const char *,
782	EC_POINT , BN_CTX );
783
784	/********************************************************************/
785	/* functions for doing EC_POINT arithmetic */
786	/********************************************************************/
787
788	/** Computes the sum of two EC_POINT
789	* \param group underlying EC_GROUP object
790	* \param r EC_POINT object for the result (r = a + b)
791	* \param a EC_POINT object with the first summand
792	* \param b EC_POINT object with the second summand
793	* \param ctx BN_CTX object (optional)
794	* \return 1 on success and 0 if an error occurred
795	*/
796	int EC_POINT_add(const EC_GROUP group, EC_POINT r, const EC_POINT *a,
797	const EC_POINT b, BN_CTX ctx);
798
799	/** Computes the double of a EC_POINT
800	* \param group underlying EC_GROUP object
801	* \param r EC_POINT object for the result (r = 2 * a)
802	* \param a EC_POINT object
803	* \param ctx BN_CTX object (optional)
804	* \return 1 on success and 0 if an error occurred
805	*/
806	int EC_POINT_dbl(const EC_GROUP group, EC_POINT r, const EC_POINT *a,
807	BN_CTX *ctx);
808
809	/** Computes the inverse of a EC_POINT
810	* \param group underlying EC_GROUP object
811	* \param a EC_POINT object to be inverted (it's used for the result as well)
812	* \param ctx BN_CTX object (optional)
813	* \return 1 on success and 0 if an error occurred
814	*/
815	int EC_POINT_invert(const EC_GROUP group, EC_POINT a, BN_CTX *ctx);
816
817	/** Checks whether the point is the neutral element of the group
818	* \param group the underlying EC_GROUP object
819	* \param p EC_POINT object
820	* \return 1 if the point is the neutral element and 0 otherwise
821	*/
822	int EC_POINT_is_at_infinity(const EC_GROUP group, const EC_POINT p);
823
824	/** Checks whether the point is on the curve
825	* \param group underlying EC_GROUP object
826	* \param point EC_POINT object to check
827	* \param ctx BN_CTX object (optional)
828	* \return 1 if the point is on the curve, 0 if not, or -1 on error
829	*/
830	int EC_POINT_is_on_curve(const EC_GROUP group, const EC_POINT point,
831	BN_CTX *ctx);
832
833	/** Compares two EC_POINTs
834	* \param group underlying EC_GROUP object
835	* \param a first EC_POINT object
836	* \param b second EC_POINT object
837	* \param ctx BN_CTX object (optional)
838	* \return 1 if the points are not equal, 0 if they are, or -1 on error
839	*/
840	int EC_POINT_cmp(const EC_GROUP group, const EC_POINT a, const EC_POINT *b,
841	BN_CTX *ctx);
842
843	# ifndef OPENSSL_NO_DEPRECATED_3_0
844	OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group,
845	EC_POINT point, BN_CTX ctx);
846	OSSL_DEPRECATEDIN_3_0 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
847	EC_POINT points[], BN_CTX ctx);
848
849	/** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i]
850	* \param group underlying EC_GROUP object
851	* \param r EC_POINT object for the result
852	* \param n BIGNUM with the multiplier for the group generator (optional)
853	* \param num number further summands
854	* \param p array of size num of EC_POINT objects
855	* \param m array of size num of BIGNUM objects
856	* \param ctx BN_CTX object (optional)
857	* \return 1 on success and 0 if an error occurred
858	*/
859	OSSL_DEPRECATEDIN_3_0 int EC_POINTs_mul(const EC_GROUP group, EC_POINT r,
860	const BIGNUM *n, size_t num,
861	const EC_POINT p[], const BIGNUM m[],
862	BN_CTX *ctx);
863	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
864
865	/** Computes r = generator * n + q * m
866	* \param group underlying EC_GROUP object
867	* \param r EC_POINT object for the result
868	* \param n BIGNUM with the multiplier for the group generator (optional)
869	* \param q EC_POINT object with the first factor of the second summand
870	* \param m BIGNUM with the second factor of the second summand
871	* \param ctx BN_CTX object (optional)
872	* \return 1 on success and 0 if an error occurred
873	*/
874	int EC_POINT_mul(const EC_GROUP group, EC_POINT r, const BIGNUM *n,
875	const EC_POINT q, const BIGNUM m, BN_CTX *ctx);
876
877	# ifndef OPENSSL_NO_DEPRECATED_3_0
878	/** Stores multiples of generator for faster point multiplication
879	* \param group EC_GROUP object
880	* \param ctx BN_CTX object (optional)
881	* \return 1 on success and 0 if an error occurred
882	*/
883	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_precompute_mult(EC_GROUP group, BN_CTX ctx);
884
885	/** Reports whether a precomputation has been done
886	* \param group EC_GROUP object
887	* \return 1 if a pre-computation has been done and 0 otherwise
888	*/
889	OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
890	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
891
892	/********************************************************************/
893	/* ASN1 stuff */
894	/********************************************************************/
895
896	DECLARE_ASN1_ITEM(ECPKPARAMETERS)
897	DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
898	DECLARE_ASN1_ITEM(ECPARAMETERS)
899	DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
900
901	/*
902	* EC_GROUP_get_basis_type() returns the NID of the basis type used to
903	* represent the field elements
904	*/
905	int EC_GROUP_get_basis_type(const EC_GROUP *);
906	# ifndef OPENSSL_NO_EC2M
907	int EC_GROUP_get_trinomial_basis(const EC_GROUP , unsigned int k);
908	int EC_GROUP_get_pentanomial_basis(const EC_GROUP , unsigned int k1,
909	unsigned int k2, unsigned int k3);
910	# endif
911
912	EC_GROUP d2i_ECPKParameters(EC_GROUP , const unsigned char *in, long len);
913	int i2d_ECPKParameters(const EC_GROUP , unsigned char *out);
914
915	# define d2i_ECPKParameters_bio(bp,x) \
916	ASN1_d2i_bio_of(EC_GROUP, NULL, d2i_ECPKParameters, bp, x)
917	# define i2d_ECPKParameters_bio(bp,x) \
918	ASN1_i2d_bio_of(EC_GROUP, i2d_ECPKParameters, bp, x)
919	# define d2i_ECPKParameters_fp(fp,x) \
920	(EC_GROUP )ASN1_d2i_fp(NULL, (d2i_of_void )d2i_ECPKParameters, (fp), \
921	(void **)(x))
922	# define i2d_ECPKParameters_fp(fp,x) \
923	ASN1_i2d_fp((i2d_of_void )i2d_ECPKParameters, (fp), (void )(x))
924
925	# ifndef OPENSSL_NO_DEPRECATED_3_0
926	OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO bp, const EC_GROUP x,
927	int off);
928	# ifndef OPENSSL_NO_STDIO
929	OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE fp, const EC_GROUP x,
930	int off);
931	# endif
932	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
933
934	/********************************************************************/
935	/* EC_KEY functions */
936	/********************************************************************/
937
938	/* some values for the encoding_flag */
939	# define EC_PKEY_NO_PARAMETERS 0x001
940	# define EC_PKEY_NO_PUBKEY 0x002
941
942	/* some values for the flags field */
943	# define EC_FLAG_SM2_RANGE 0x0004
944	# define EC_FLAG_COFACTOR_ECDH 0x1000
945	# define EC_FLAG_CHECK_NAMED_GROUP 0x2000
946	# define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000
947	# define EC_FLAG_CHECK_NAMED_GROUP_MASK \
948	(EC_FLAG_CHECK_NAMED_GROUP \| EC_FLAG_CHECK_NAMED_GROUP_NIST)
949
950	/* Deprecated flags - it was using 0x01..0x02 */
951	# define EC_FLAG_NON_FIPS_ALLOW 0x0000
952	# define EC_FLAG_FIPS_CHECKED 0x0000
953
954	# ifndef OPENSSL_NO_DEPRECATED_3_0
955	/**
956	* Creates a new EC_KEY object.
957	* \param ctx The library context for to use for this EC_KEY. May be NULL in
958	* which case the default library context is used.
959	* \return EC_KEY object or NULL if an error occurred.
960	*/
961	OSSL_DEPRECATEDIN_3_0 EC_KEY EC_KEY_new_ex(OSSL_LIB_CTX ctx, const char *propq);
962
963	/**
964	* Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a
965	* NULL library context
966	* \return EC_KEY object or NULL if an error occurred.
967	*/
968	OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void);
969
970	OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key);
971
972	OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags);
973
974	OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags);
975
976	OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key);
977
978	/**
979	* Creates a new EC_KEY object using a named curve as underlying
980	* EC_GROUP object.
981	* \param ctx The library context for to use for this EC_KEY. May be NULL in
982	* which case the default library context is used.
983	* \param propq Any property query string
984	* \param nid NID of the named curve.
985	* \return EC_KEY object or NULL if an error occurred.
986	*/
987	OSSL_DEPRECATEDIN_3_0 EC_KEY EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX ctx,
988	const char *propq,
989	int nid);
990
991	/**
992	* Creates a new EC_KEY object using a named curve as underlying
993	* EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL
994	* library context and property query string.
995	* \param nid NID of the named curve.
996	* \return EC_KEY object or NULL if an error occurred.
997	*/
998	OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid);
999
1000	/** Frees a EC_KEY object.
1001	* \param key EC_KEY object to be freed.
1002	*/
1003	OSSL_DEPRECATEDIN_3_0 void EC_KEY_free(EC_KEY *key);
1004
1005	/** Copies a EC_KEY object.
1006	* \param dst destination EC_KEY object
1007	* \param src src EC_KEY object
1008	* \return dst or NULL if an error occurred.
1009	*/
1010	OSSL_DEPRECATEDIN_3_0 EC_KEY EC_KEY_copy(EC_KEY dst, const EC_KEY *src);
1011
1012	/** Creates a new EC_KEY object and copies the content from src to it.
1013	* \param src the source EC_KEY object
1014	* \return newly created EC_KEY object or NULL if an error occurred.
1015	*/
1016	OSSL_DEPRECATEDIN_3_0 EC_KEY EC_KEY_dup(const EC_KEY src);
1017
1018	/** Increases the internal reference count of a EC_KEY object.
1019	* \param key EC_KEY object
1020	* \return 1 on success and 0 if an error occurred.
1021	*/
1022	OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key);
1023
1024	/** Returns the ENGINE object of a EC_KEY object
1025	* \param eckey EC_KEY object
1026	* \return the ENGINE object (possibly NULL).
1027	*/
1028	OSSL_DEPRECATEDIN_3_0 ENGINE EC_KEY_get0_engine(const EC_KEY eckey);
1029
1030	/** Returns the EC_GROUP object of a EC_KEY object
1031	* \param key EC_KEY object
1032	* \return the EC_GROUP object (possibly NULL).
1033	*/
1034	OSSL_DEPRECATEDIN_3_0 const EC_GROUP EC_KEY_get0_group(const EC_KEY key);
1035
1036	/** Sets the EC_GROUP of a EC_KEY object.
1037	* \param key EC_KEY object
1038	* \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
1039	* object will use an own copy of the EC_GROUP).
1040	* \return 1 on success and 0 if an error occurred.
1041	*/
1042	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_group(EC_KEY key, const EC_GROUP group);
1043
1044	/** Returns the private key of a EC_KEY object.
1045	* \param key EC_KEY object
1046	* \return a BIGNUM with the private key (possibly NULL).
1047	*/
1048	OSSL_DEPRECATEDIN_3_0 const BIGNUM EC_KEY_get0_private_key(const EC_KEY key);
1049
1050	/** Sets the private key of a EC_KEY object.
1051	* \param key EC_KEY object
1052	* \param prv BIGNUM with the private key (note: the EC_KEY object
1053	* will use an own copy of the BIGNUM).
1054	* \return 1 on success and 0 if an error occurred.
1055	*/
1056	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_private_key(EC_KEY key, const BIGNUM prv);
1057
1058	/** Returns the public key of a EC_KEY object.
1059	* \param key the EC_KEY object
1060	* \return a EC_POINT object with the public key (possibly NULL)
1061	*/
1062	OSSL_DEPRECATEDIN_3_0 const EC_POINT EC_KEY_get0_public_key(const EC_KEY key);
1063
1064	/** Sets the public key of a EC_KEY object.
1065	* \param key EC_KEY object
1066	* \param pub EC_POINT object with the public key (note: the EC_KEY object
1067	* will use an own copy of the EC_POINT object).
1068	* \return 1 on success and 0 if an error occurred.
1069	*/
1070	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY key, const EC_POINT pub);
1071
1072	OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
1073	OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
1074	OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
1075	OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey,
1076	point_conversion_form_t cform);
1077	# endif /OPENSSL_NO_DEPRECATED_3_0 /
1078
1079	# define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
1080	CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
1081
1082	# ifndef OPENSSL_NO_DEPRECATED_3_0
1083	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY key, int idx, void arg);
1084	OSSL_DEPRECATEDIN_3_0 void EC_KEY_get_ex_data(const EC_KEY key, int idx);
1085
1086	/* wrapper functions for the underlying EC_GROUP object */
1087	OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
1088
1089	/** Creates a table of pre-computed multiples of the generator to
1090	* accelerate further EC_KEY operations.
1091	* \param key EC_KEY object
1092	* \param ctx BN_CTX object (optional)
1093	* \return 1 on success and 0 if an error occurred.
1094	*/
1095	OSSL_DEPRECATEDIN_3_0 int EC_KEY_precompute_mult(EC_KEY key, BN_CTX ctx);
1096
1097	/** Creates a new ec private (and optional a new public) key.
1098	* \param key EC_KEY object
1099	* \return 1 on success and 0 if an error occurred.
1100	*/
1101	OSSL_DEPRECATEDIN_3_0 int EC_KEY_generate_key(EC_KEY *key);
1102
1103	/** Verifies that a private and/or public key is valid.
1104	* \param key the EC_KEY object
1105	* \return 1 on success and 0 otherwise.
1106	*/
1107	OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key);
1108
1109	/** Indicates if an EC_KEY can be used for signing.
1110	* \param eckey the EC_KEY object
1111	* \return 1 if can can sign and 0 otherwise.
1112	*/
1113	OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey);
1114
1115	/** Sets a public key from affine coordinates performing
1116	* necessary NIST PKV tests.
1117	* \param key the EC_KEY object
1118	* \param x public key x coordinate
1119	* \param y public key y coordinate
1120	* \return 1 on success and 0 otherwise.
1121	*/
1122	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
1123	BIGNUM *x,
1124	BIGNUM *y);
1125
1126	/** Encodes an EC_KEY public key to an allocated octet string
1127	* \param key key to encode
1128	* \param form point conversion form
1129	* \param pbuf returns pointer to allocated buffer
1130	* \param ctx BN_CTX object (optional)
1131	* \return the length of the encoded octet string or 0 if an error occurred
1132	*/
1133	OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key,
1134	point_conversion_form_t form,
1135	unsigned char *pbuf, BN_CTX ctx);
1136
1137	/** Decodes a EC_KEY public key from a octet string
1138	* \param key key to decode
1139	* \param buf memory buffer with the encoded ec point
1140	* \param len length of the encoded ec point
1141	* \param ctx BN_CTX object (optional)
1142	* \return 1 on success and 0 if an error occurred
1143	*/
1144
1145	OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY key, const unsigned char buf,
1146	size_t len, BN_CTX *ctx);
1147
1148	/** Decodes an EC_KEY private key from an octet string
1149	* \param key key to decode
1150	* \param buf memory buffer with the encoded private key
1151	* \param len length of the encoded key
1152	* \return 1 on success and 0 if an error occurred
1153	*/
1154
1155	OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY key, const unsigned char buf,
1156	size_t len);
1157
1158	/** Encodes a EC_KEY private key to an octet string
1159	* \param key key to encode
1160	* \param buf memory buffer for the result. If NULL the function returns
1161	* required buffer size.
1162	* \param len length of the memory buffer
1163	* \return the length of the encoded octet string or 0 if an error occurred
1164	*/
1165
1166	OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key,
1167	unsigned char *buf, size_t len);
1168
1169	/** Encodes an EC_KEY private key to an allocated octet string
1170	* \param eckey key to encode
1171	* \param pbuf returns pointer to allocated buffer
1172	* \return the length of the encoded octet string or 0 if an error occurred
1173	*/
1174	OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey,
1175	unsigned char **pbuf);
1176
1177	/********************************************************************/
1178	/* de- and encoding functions for SEC1 ECPrivateKey */
1179	/********************************************************************/
1180
1181	/** Decodes a private key from a memory buffer.
1182	* \param key a pointer to a EC_KEY object which should be used (or NULL)
1183	* \param in pointer to memory with the DER encoded private key
1184	* \param len length of the DER encoded private key
1185	* \return the decoded private key or NULL if an error occurred.
1186	*/
1187	OSSL_DEPRECATEDIN_3_0 EC_KEY d2i_ECPrivateKey(EC_KEY *key,
1188	const unsigned char **in,
1189	long len);
1190
1191	/** Encodes a private key object and stores the result in a buffer.
1192	* \param key the EC_KEY object to encode
1193	* \param out the buffer for the result (if NULL the function returns number
1194	* of bytes needed).
1195	* \return 1 on success and 0 if an error occurred.
1196	*/
1197	OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const EC_KEY *key,
1198	unsigned char **out);
1199
1200	/********************************************************************/
1201	/* de- and encoding functions for EC parameters */
1202	/********************************************************************/
1203
1204	/** Decodes ec parameter from a memory buffer.
1205	* \param key a pointer to a EC_KEY object which should be used (or NULL)
1206	* \param in pointer to memory with the DER encoded ec parameters
1207	* \param len length of the DER encoded ec parameters
1208	* \return a EC_KEY object with the decoded parameters or NULL if an error
1209	* occurred.
1210	*/
1211	OSSL_DEPRECATEDIN_3_0 EC_KEY d2i_ECParameters(EC_KEY *key,
1212	const unsigned char **in,
1213	long len);
1214
1215	/** Encodes ec parameter and stores the result in a buffer.
1216	* \param key the EC_KEY object with ec parameters to encode
1217	* \param out the buffer for the result (if NULL the function returns number
1218	* of bytes needed).
1219	* \return 1 on success and 0 if an error occurred.
1220	*/
1221	OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key,
1222	unsigned char **out);
1223
1224	/********************************************************************/
1225	/* de- and encoding functions for EC public key */
1226	/* (octet string, not DER -- hence 'o2i' and 'i2o') */
1227	/********************************************************************/
1228
1229	/** Decodes an ec public key from a octet string.
1230	* \param key a pointer to a EC_KEY object which should be used
1231	* \param in memory buffer with the encoded public key
1232	* \param len length of the encoded public key
1233	* \return EC_KEY object with decoded public key or NULL if an error
1234	* occurred.
1235	*/
1236	OSSL_DEPRECATEDIN_3_0 EC_KEY o2i_ECPublicKey(EC_KEY *key,
1237	const unsigned char **in, long len);
1238
1239	/** Encodes an ec public key in an octet string.
1240	* \param key the EC_KEY object with the public key
1241	* \param out the buffer for the result (if NULL the function returns number
1242	* of bytes needed).
1243	* \return 1 on success and 0 if an error occurred
1244	*/
1245	OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY key, unsigned char *out);
1246
1247	/** Prints out the ec parameters on human readable form.
1248	* \param bp BIO object to which the information is printed
1249	* \param key EC_KEY object
1250	* \return 1 on success and 0 if an error occurred
1251	*/
1252	OSSL_DEPRECATEDIN_3_0 int ECParameters_print(BIO bp, const EC_KEY key);
1253
1254	/** Prints out the contents of a EC_KEY object
1255	* \param bp BIO object to which the information is printed
1256	* \param key EC_KEY object
1257	* \param off line offset
1258	* \return 1 on success and 0 if an error occurred
1259	*/
1260	OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO bp, const EC_KEY key, int off);
1261
1262	# ifndef OPENSSL_NO_STDIO
1263	/** Prints out the ec parameters on human readable form.
1264	* \param fp file descriptor to which the information is printed
1265	* \param key EC_KEY object
1266	* \return 1 on success and 0 if an error occurred
1267	*/
1268	OSSL_DEPRECATEDIN_3_0 int ECParameters_print_fp(FILE fp, const EC_KEY key);
1269
1270	/** Prints out the contents of a EC_KEY object
1271	* \param fp file descriptor to which the information is printed
1272	* \param key EC_KEY object
1273	* \param off line offset
1274	* \return 1 on success and 0 if an error occurred
1275	*/
1276	OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE fp, const EC_KEY key, int off);
1277	# endif /* OPENSSL_NO_STDIO */
1278
1279	OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1280	OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1281	OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
1282	OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD EC_KEY_get_method(const EC_KEY key);
1283	OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY key, const EC_KEY_METHOD meth);
1284	OSSL_DEPRECATEDIN_3_0 EC_KEY EC_KEY_new_method(ENGINE engine);
1285
1286	/** The old name for ecdh_KDF_X9_63
1287	* The ECDH KDF specification has been mistakingly attributed to ANSI X9.62,
1288	* it is actually specified in ANSI X9.63.
1289	* This identifier is retained for backwards compatibility
1290	*/
1291	OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
1292	const unsigned char *Z, size_t Zlen,
1293	const unsigned char *sinfo,
1294	size_t sinfolen, const EVP_MD *md);
1295
1296	OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen,
1297	const EC_POINT *pub_key,
1298	const EC_KEY *ecdh,
1299	void (KDF)(const void *in,
1300	size_t inlen, void *out,
1301	size_t *outlen));
1302	# endif /* OPENSSL_NO_DEPRECATED_3_0 */
1303
1304	typedef struct ECDSA_SIG_st ECDSA_SIG;
1305
1306	/** Allocates and initialize a ECDSA_SIG structure
1307	* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1308	*/
1309	ECDSA_SIG *ECDSA_SIG_new(void);
1310
1311	/** frees a ECDSA_SIG structure
1312	* \param sig pointer to the ECDSA_SIG structure
1313	*/
1314	void ECDSA_SIG_free(ECDSA_SIG *sig);
1315
1316	/** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp
1317	* (*pp += length of the DER encoded signature)).
1318	* \param sig pointer to the ECDSA_SIG object
1319	* \param pp pointer to a unsigned char pointer for the output or NULL
1320	* \return the length of the DER encoded ECDSA_SIG object or a negative value
1321	* on error
1322	*/
1323	DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG)
1324
1325	/** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp
1326	* (*pp += len)).
1327	* \param sig pointer to ECDSA_SIG pointer (may be NULL)
1328	* \param pp memory buffer with the DER encoded signature
1329	* \param len length of the buffer
1330	* \return pointer to the decoded ECDSA_SIG structure (or NULL)
1331	*/
1332
1333	/** Accessor for r and s fields of ECDSA_SIG
1334	* \param sig pointer to ECDSA_SIG structure
1335	* \param pr pointer to BIGNUM pointer for r (may be NULL)
1336	* \param ps pointer to BIGNUM pointer for s (may be NULL)
1337	*/
1338	void ECDSA_SIG_get0(const ECDSA_SIG sig, const BIGNUM pr, const BIGNUM *ps);
1339
1340	/** Accessor for r field of ECDSA_SIG
1341	* \param sig pointer to ECDSA_SIG structure
1342	*/
1343	const BIGNUM ECDSA_SIG_get0_r(const ECDSA_SIG sig);
1344
1345	/** Accessor for s field of ECDSA_SIG
1346	* \param sig pointer to ECDSA_SIG structure
1347	*/
1348	const BIGNUM ECDSA_SIG_get0_s(const ECDSA_SIG sig);
1349
1350	/** Setter for r and s fields of ECDSA_SIG
1351	* \param sig pointer to ECDSA_SIG structure
1352	* \param r pointer to BIGNUM for r
1353	* \param s pointer to BIGNUM for s
1354	*/
1355	int ECDSA_SIG_set0(ECDSA_SIG sig, BIGNUM r, BIGNUM *s);
1356
1357	# ifndef OPENSSL_NO_DEPRECATED_3_0
1358	/** Computes the ECDSA signature of the given hash value using
1359	* the supplied private key and returns the created signature.
1360	* \param dgst pointer to the hash value
1361	* \param dgst_len length of the hash value
1362	* \param eckey EC_KEY object containing a private EC key
1363	* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1364	*/
1365	OSSL_DEPRECATEDIN_3_0 ECDSA_SIG ECDSA_do_sign(const unsigned char dgst,
1366	int dgst_len, EC_KEY *eckey);
1367
1368	/** Computes ECDSA signature of a given hash value using the supplied
1369	* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1370	* \param dgst pointer to the hash value to sign
1371	* \param dgstlen length of the hash value
1372	* \param kinv BIGNUM with a pre-computed inverse k (optional)
1373	* \param rp BIGNUM with a pre-computed rp value (optional),
1374	* see ECDSA_sign_setup
1375	* \param eckey EC_KEY object containing a private EC key
1376	* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1377	*/
1378	OSSL_DEPRECATEDIN_3_0 ECDSA_SIG ECDSA_do_sign_ex(const unsigned char dgst,
1379	int dgstlen, const BIGNUM *kinv,
1380	const BIGNUM rp, EC_KEY eckey);
1381
1382	/** Verifies that the supplied signature is a valid ECDSA
1383	* signature of the supplied hash value using the supplied public key.
1384	* \param dgst pointer to the hash value
1385	* \param dgst_len length of the hash value
1386	* \param sig ECDSA_SIG structure
1387	* \param eckey EC_KEY object containing a public EC key
1388	* \return 1 if the signature is valid, 0 if the signature is invalid
1389	* and -1 on error
1390	*/
1391	OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1392	const ECDSA_SIG sig, EC_KEY eckey);
1393
1394	/** Precompute parts of the signing operation
1395	* \param eckey EC_KEY object containing a private EC key
1396	* \param ctx BN_CTX object (optional)
1397	* \param kinv BIGNUM pointer for the inverse of k
1398	* \param rp BIGNUM pointer for x coordinate of k * generator
1399	* \return 1 on success and 0 otherwise
1400	*/
1401	OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY eckey, BN_CTX ctx,
1402	BIGNUM kinv, BIGNUM rp);
1403
1404	/** Computes ECDSA signature of a given hash value using the supplied
1405	* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1406	* \param type this parameter is ignored
1407	* \param dgst pointer to the hash value to sign
1408	* \param dgstlen length of the hash value
1409	* \param sig memory for the DER encoded created signature
1410	* \param siglen pointer to the length of the returned signature
1411	* \param eckey EC_KEY object containing a private EC key
1412	* \return 1 on success and 0 otherwise
1413	*/
1414	OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst,
1415	int dgstlen, unsigned char *sig,
1416	unsigned int siglen, EC_KEY eckey);
1417
1418	/** Computes ECDSA signature of a given hash value using the supplied
1419	* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1420	* \param type this parameter is ignored
1421	* \param dgst pointer to the hash value to sign
1422	* \param dgstlen length of the hash value
1423	* \param sig buffer to hold the DER encoded signature
1424	* \param siglen pointer to the length of the returned signature
1425	* \param kinv BIGNUM with a pre-computed inverse k (optional)
1426	* \param rp BIGNUM with a pre-computed rp value (optional),
1427	* see ECDSA_sign_setup
1428	* \param eckey EC_KEY object containing a private EC key
1429	* \return 1 on success and 0 otherwise
1430	*/
1431	OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst,
1432	int dgstlen, unsigned char *sig,
1433	unsigned int siglen, const BIGNUM kinv,
1434	const BIGNUM rp, EC_KEY eckey);
1435
1436	/** Verifies that the given signature is valid ECDSA signature
1437	* of the supplied hash value using the specified public key.
1438	* \param type this parameter is ignored
1439	* \param dgst pointer to the hash value
1440	* \param dgstlen length of the hash value
1441	* \param sig pointer to the DER encoded signature
1442	* \param siglen length of the DER encoded signature
1443	* \param eckey EC_KEY object containing a public EC key
1444	* \return 1 if the signature is valid, 0 if the signature is invalid
1445	* and -1 on error
1446	*/
1447	OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst,
1448	int dgstlen, const unsigned char *sig,
1449	int siglen, EC_KEY *eckey);
1450
1451	/** Returns the maximum length of the DER encoded signature
1452	* \param eckey EC_KEY object
1453	* \return numbers of bytes required for the DER encoded signature
1454	*/
1455	OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey);
1456
1457	/********************************************************************/
1458	/* EC_KEY_METHOD constructors, destructors, writers and accessors */
1459	/********************************************************************/
1460
1461	OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD EC_KEY_METHOD_new(const EC_KEY_METHOD meth);
1462	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1463	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_init
1464	(EC_KEY_METHOD *meth,
1465	int (init)(EC_KEY key),
1466	void (finish)(EC_KEY key),
1467	int (copy)(EC_KEY dest, const EC_KEY *src),
1468	int (set_group)(EC_KEY key, const EC_GROUP *grp),
1469	int (set_private)(EC_KEY key, const BIGNUM *priv_key),
1470	int (set_public)(EC_KEY key, const EC_POINT *pub_key));
1471
1472	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1473	int (keygen)(EC_KEY key));
1474
1475	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key
1476	(EC_KEY_METHOD *meth,
1477	int (ckey)(unsigned char psec, size_t pseclen,
1478	const EC_POINT pub_key, const EC_KEY ecdh));
1479
1480	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign
1481	(EC_KEY_METHOD *meth,
1482	int (sign)(int type, const unsigned char dgst,
1483	int dlen, unsigned char *sig,
1484	unsigned int *siglen,
1485	const BIGNUM kinv, const BIGNUM r,
1486	EC_KEY *eckey),
1487	int (sign_setup)(EC_KEY eckey, BN_CTX *ctx_in,
1488	BIGNUM kinvp, BIGNUM rp),
1489	ECDSA_SIG (sign_sig)(const unsigned char *dgst,
1490	int dgst_len,
1491	const BIGNUM *in_kinv,
1492	const BIGNUM *in_r,
1493	EC_KEY *eckey));
1494
1495	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify
1496	(EC_KEY_METHOD *meth,
1497	int (*verify)(int type, const unsigned
1498	char *dgst, int dgst_len,
1499	const unsigned char *sigbuf,
1500	int sig_len, EC_KEY *eckey),
1501	int (verify_sig)(const unsigned char dgst,
1502	int dgst_len, const ECDSA_SIG *sig,
1503	EC_KEY *eckey));
1504
1505	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_init
1506	(const EC_KEY_METHOD *meth,
1507	int (*pinit)(EC_KEY key),
1508	void (*pfinish)(EC_KEY key),
1509	int (*pcopy)(EC_KEY dest, const EC_KEY *src),
1510	int (*pset_group)(EC_KEY key, const EC_GROUP *grp),
1511	int (*pset_private)(EC_KEY key, const BIGNUM *priv_key),
1512	int (*pset_public)(EC_KEY key, const EC_POINT *pub_key));
1513
1514	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen
1515	(const EC_KEY_METHOD meth, int (pkeygen)(EC_KEY key));
1516
1517	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key
1518	(const EC_KEY_METHOD *meth,
1519	int (pck)(unsigned char psec,
1520	size_t *pseclen,
1521	const EC_POINT *pub_key,
1522	const EC_KEY *ecdh));
1523
1524	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign
1525	(const EC_KEY_METHOD *meth,
1526	int (*psign)(int type, const unsigned char dgst,
1527	int dlen, unsigned char *sig,
1528	unsigned int *siglen,
1529	const BIGNUM kinv, const BIGNUM r,
1530	EC_KEY *eckey),
1531	int (*psign_setup)(EC_KEY eckey, BN_CTX *ctx_in,
1532	BIGNUM kinvp, BIGNUM rp),
1533	ECDSA_SIG (psign_sig)(const unsigned char dgst,
1534	int dgst_len,
1535	const BIGNUM *in_kinv,
1536	const BIGNUM *in_r,
1537	EC_KEY *eckey));
1538
1539	OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify
1540	(const EC_KEY_METHOD *meth,
1541	int (**pverify)(int type, const unsigned
1542	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

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source: vbox/trunk/src/libs/openssl-3.0.7/include/openssl/ec.h@ 97673

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