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Header file cleanup for C++20 header-units
[thirdparty/openssl.git] / include / openssl / ec.h
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_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
108 typedef struct ec_method_st EC_METHOD;
109 # endif
110 typedef struct ec_group_st EC_GROUP;
111 typedef struct ec_point_st EC_POINT;
112 typedef struct ecpk_parameters_st ECPKPARAMETERS;
113 typedef 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 */
124 OSSL_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 */
129 OSSL_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 */
134 OSSL_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 */
140 OSSL_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 */
145 OSSL_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 */
150 OSSL_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 */
161 OSSL_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 */
174 OSSL_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 */
179 OSSL_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 */
185 OSSL_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 */
191 OSSL_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 */
197 void 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 */
204 int 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 */
211 EC_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 */
221 int 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 */
228 const 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 */
234 BN_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 */
242 int 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 */
248 const 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 */
254 int 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 */
262 int 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 */
269 const 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 */
275 void 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 */
281 int 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 */
287 const 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 */
293 int EC_GROUP_get_field_type(const EC_GROUP *group);
294
295 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
296 int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
297
298 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
299 point_conversion_form_t form);
300 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
301
302 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
303 size_t EC_GROUP_get_seed_len(const EC_GROUP *);
304 size_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 */
316 int 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 */
329 int 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 */
342 OSSL_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 */
357 OSSL_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 */
372 OSSL_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 */
387 OSSL_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 */
398 int 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 */
405 int 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 */
412 int 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 */
420 int 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 */
435 EC_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 */
446 EC_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 */
460 EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
461 OSSL_LIB_CTX *libctx, const char *propq);
462
463 /**
464 * Creates a EC_GROUP object with a curve specified by a NID
465 * \param libctx The associated library context or NULL for the default
466 * context
467 * \param propq A property query string
468 * \param nid NID of the OID of the curve name
469 * \return newly created EC_GROUP object with specified curve or NULL
470 * if an error occurred
471 */
472 EC_GROUP *EC_GROUP_new_by_curve_name_ex(OSSL_LIB_CTX *libctx, const char *propq,
473 int nid);
474
475 /**
476 * Creates a EC_GROUP object with a curve specified by a NID. Same as
477 * EC_GROUP_new_by_curve_name_ex but the libctx and propq are always
478 * NULL.
479 * \param nid NID of the OID of the curve name
480 * \return newly created EC_GROUP object with specified curve or NULL
481 * if an error occurred
482 */
483 EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
484
485 /** Creates a new EC_GROUP object from an ECPARAMETERS object
486 * \param params pointer to the ECPARAMETERS object
487 * \return newly created EC_GROUP object with specified curve or NULL
488 * if an error occurred
489 */
490 EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
491
492 /** Creates an ECPARAMETERS object for the given EC_GROUP object.
493 * \param group pointer to the EC_GROUP object
494 * \param params pointer to an existing ECPARAMETERS object or NULL
495 * \return pointer to the new ECPARAMETERS object or NULL
496 * if an error occurred.
497 */
498 ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
499 ECPARAMETERS *params);
500
501 /** Creates a new EC_GROUP object from an ECPKPARAMETERS object
502 * \param params pointer to an existing ECPKPARAMETERS object, or NULL
503 * \return newly created EC_GROUP object with specified curve, or NULL
504 * if an error occurred
505 */
506 EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
507
508 /** Creates an ECPKPARAMETERS object for the given EC_GROUP object.
509 * \param group pointer to the EC_GROUP object
510 * \param params pointer to an existing ECPKPARAMETERS object or NULL
511 * \return pointer to the new ECPKPARAMETERS object or NULL
512 * if an error occurred.
513 */
514 ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
515 ECPKPARAMETERS *params);
516
517 /********************************************************************/
518 /* handling of internal curves */
519 /********************************************************************/
520
521 typedef struct {
522 int nid;
523 const char *comment;
524 } EC_builtin_curve;
525
526 /*
527 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
528 * available curves or zero if a error occurred. In case r is not zero,
529 * nitems EC_builtin_curve structures are filled with the data of the first
530 * nitems internal groups
531 */
532 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
533
534 const char *EC_curve_nid2nist(int nid);
535 int EC_curve_nist2nid(const char *name);
536 int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only,
537 BN_CTX *ctx);
538
539 /********************************************************************/
540 /* EC_POINT functions */
541 /********************************************************************/
542
543 /** Creates a new EC_POINT object for the specified EC_GROUP
544 * \param group EC_GROUP the underlying EC_GROUP object
545 * \return newly created EC_POINT object or NULL if an error occurred
546 */
547 EC_POINT *EC_POINT_new(const EC_GROUP *group);
548
549 /** Frees a EC_POINT object
550 * \param point EC_POINT object to be freed
551 */
552 void EC_POINT_free(EC_POINT *point);
553
554 /** Clears and frees a EC_POINT object
555 * \param point EC_POINT object to be cleared and freed
556 */
557 void EC_POINT_clear_free(EC_POINT *point);
558
559 /** Copies EC_POINT object
560 * \param dst destination EC_POINT object
561 * \param src source EC_POINT object
562 * \return 1 on success and 0 if an error occurred
563 */
564 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
565
566 /** Creates a new EC_POINT object and copies the content of the supplied
567 * EC_POINT
568 * \param src source EC_POINT object
569 * \param group underlying the EC_GROUP object
570 * \return newly created EC_POINT object or NULL if an error occurred
571 */
572 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
573
574 /** Sets a point to infinity (neutral element)
575 * \param group underlying EC_GROUP object
576 * \param point EC_POINT to set to infinity
577 * \return 1 on success and 0 if an error occurred
578 */
579 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
580
581 # ifndef OPENSSL_NO_DEPRECATED_3_0
582 /** Returns the EC_METHOD used in EC_POINT object
583 * \param point EC_POINT object
584 * \return the EC_METHOD used
585 */
586 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
587
588 /** Sets the jacobian projective coordinates of a EC_POINT over GFp
589 * \param group underlying EC_GROUP object
590 * \param p EC_POINT object
591 * \param x BIGNUM with the x-coordinate
592 * \param y BIGNUM with the y-coordinate
593 * \param z BIGNUM with the z-coordinate
594 * \param ctx BN_CTX object (optional)
595 * \return 1 on success and 0 if an error occurred
596 */
597 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_Jprojective_coordinates_GFp
598 (const EC_GROUP *group, EC_POINT *p,
599 const BIGNUM *x, const BIGNUM *y, const BIGNUM *z,
600 BN_CTX *ctx);
601
602 /** Gets the jacobian projective coordinates of a EC_POINT over GFp
603 * \param group underlying EC_GROUP object
604 * \param p EC_POINT object
605 * \param x BIGNUM for the x-coordinate
606 * \param y BIGNUM for the y-coordinate
607 * \param z BIGNUM for the z-coordinate
608 * \param ctx BN_CTX object (optional)
609 * \return 1 on success and 0 if an error occurred
610 */
611 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp
612 (const EC_GROUP *group, const EC_POINT *p,
613 BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx);
614 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
615
616 /** Sets the affine coordinates of an EC_POINT
617 * \param group underlying EC_GROUP object
618 * \param p EC_POINT object
619 * \param x BIGNUM with the x-coordinate
620 * \param y BIGNUM with the y-coordinate
621 * \param ctx BN_CTX object (optional)
622 * \return 1 on success and 0 if an error occurred
623 */
624 int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p,
625 const BIGNUM *x, const BIGNUM *y,
626 BN_CTX *ctx);
627
628 /** Gets the affine coordinates of an EC_POINT.
629 * \param group underlying EC_GROUP object
630 * \param p EC_POINT object
631 * \param x BIGNUM for the x-coordinate
632 * \param y BIGNUM for the y-coordinate
633 * \param ctx BN_CTX object (optional)
634 * \return 1 on success and 0 if an error occurred
635 */
636 int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p,
637 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
638
639 # ifndef OPENSSL_NO_DEPRECATED_3_0
640 /** Sets the affine coordinates of an EC_POINT. A synonym of
641 * EC_POINT_set_affine_coordinates
642 * \param group underlying EC_GROUP object
643 * \param p EC_POINT object
644 * \param x BIGNUM with the x-coordinate
645 * \param y BIGNUM with the y-coordinate
646 * \param ctx BN_CTX object (optional)
647 * \return 1 on success and 0 if an error occurred
648 */
649 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GFp
650 (const EC_GROUP *group, EC_POINT *p,
651 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
652
653 /** Gets the affine coordinates of an EC_POINT. A synonym of
654 * EC_POINT_get_affine_coordinates
655 * \param group underlying EC_GROUP object
656 * \param p EC_POINT object
657 * \param x BIGNUM for the x-coordinate
658 * \param y BIGNUM for the y-coordinate
659 * \param ctx BN_CTX object (optional)
660 * \return 1 on success and 0 if an error occurred
661 */
662 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp
663 (const EC_GROUP *group, const EC_POINT *p,
664 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
665 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
666
667 /** Sets the x9.62 compressed coordinates of a EC_POINT
668 * \param group underlying EC_GROUP object
669 * \param p EC_POINT object
670 * \param x BIGNUM with x-coordinate
671 * \param y_bit integer with the y-Bit (either 0 or 1)
672 * \param ctx BN_CTX object (optional)
673 * \return 1 on success and 0 if an error occurred
674 */
675 int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p,
676 const BIGNUM *x, int y_bit,
677 BN_CTX *ctx);
678
679 # ifndef OPENSSL_NO_DEPRECATED_3_0
680 /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
681 * EC_POINT_set_compressed_coordinates
682 * \param group underlying EC_GROUP object
683 * \param p EC_POINT object
684 * \param x BIGNUM with x-coordinate
685 * \param y_bit integer with the y-Bit (either 0 or 1)
686 * \param ctx BN_CTX object (optional)
687 * \return 1 on success and 0 if an error occurred
688 */
689 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GFp
690 (const EC_GROUP *group, EC_POINT *p,
691 const BIGNUM *x, int y_bit, BN_CTX *ctx);
692 # ifndef OPENSSL_NO_EC2M
693 /** Sets the affine coordinates of an EC_POINT. A synonym of
694 * EC_POINT_set_affine_coordinates
695 * \param group underlying EC_GROUP object
696 * \param p EC_POINT object
697 * \param x BIGNUM with the x-coordinate
698 * \param y BIGNUM with the y-coordinate
699 * \param ctx BN_CTX object (optional)
700 * \return 1 on success and 0 if an error occurred
701 */
702 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GF2m
703 (const EC_GROUP *group, EC_POINT *p,
704 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx);
705
706 /** Gets the affine coordinates of an EC_POINT. A synonym of
707 * EC_POINT_get_affine_coordinates
708 * \param group underlying EC_GROUP object
709 * \param p EC_POINT object
710 * \param x BIGNUM for the x-coordinate
711 * \param y BIGNUM for the y-coordinate
712 * \param ctx BN_CTX object (optional)
713 * \return 1 on success and 0 if an error occurred
714 */
715 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GF2m
716 (const EC_GROUP *group, const EC_POINT *p,
717 BIGNUM *x, BIGNUM *y, BN_CTX *ctx);
718
719 /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of
720 * EC_POINT_set_compressed_coordinates
721 * \param group underlying EC_GROUP object
722 * \param p EC_POINT object
723 * \param x BIGNUM with x-coordinate
724 * \param y_bit integer with the y-Bit (either 0 or 1)
725 * \param ctx BN_CTX object (optional)
726 * \return 1 on success and 0 if an error occurred
727 */
728 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m
729 (const EC_GROUP *group, EC_POINT *p,
730 const BIGNUM *x, int y_bit, BN_CTX *ctx);
731 # endif
732 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
733
734 /** Encodes a EC_POINT object to a octet string
735 * \param group underlying EC_GROUP object
736 * \param p EC_POINT object
737 * \param form point conversion form
738 * \param buf memory buffer for the result. If NULL the function returns
739 * required buffer size.
740 * \param len length of the memory buffer
741 * \param ctx BN_CTX object (optional)
742 * \return the length of the encoded octet string or 0 if an error occurred
743 */
744 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
745 point_conversion_form_t form,
746 unsigned char *buf, size_t len, BN_CTX *ctx);
747
748 /** Decodes a EC_POINT from a octet string
749 * \param group underlying EC_GROUP object
750 * \param p EC_POINT object
751 * \param buf memory buffer with the encoded ec point
752 * \param len length of the encoded ec point
753 * \param ctx BN_CTX object (optional)
754 * \return 1 on success and 0 if an error occurred
755 */
756 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
757 const unsigned char *buf, size_t len, BN_CTX *ctx);
758
759 /** Encodes an EC_POINT object to an allocated octet string
760 * \param group underlying EC_GROUP object
761 * \param point EC_POINT object
762 * \param form point conversion form
763 * \param pbuf returns pointer to allocated buffer
764 * \param ctx BN_CTX object (optional)
765 * \return the length of the encoded octet string or 0 if an error occurred
766 */
767 size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
768 point_conversion_form_t form,
769 unsigned char **pbuf, BN_CTX *ctx);
770
771 /* other interfaces to point2oct/oct2point: */
772 # ifndef OPENSSL_NO_DEPRECATED_3_0
773 OSSL_DEPRECATEDIN_3_0 BIGNUM *EC_POINT_point2bn(const EC_GROUP *,
774 const EC_POINT *,
775 point_conversion_form_t form,
776 BIGNUM *, BN_CTX *);
777 OSSL_DEPRECATEDIN_3_0 EC_POINT *EC_POINT_bn2point(const EC_GROUP *,
778 const BIGNUM *,
779 EC_POINT *, BN_CTX *);
780 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
781
782 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
783 point_conversion_form_t form, BN_CTX *);
784 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
785 EC_POINT *, BN_CTX *);
786
787 /********************************************************************/
788 /* functions for doing EC_POINT arithmetic */
789 /********************************************************************/
790
791 /** Computes the sum of two EC_POINT
792 * \param group underlying EC_GROUP object
793 * \param r EC_POINT object for the result (r = a + b)
794 * \param a EC_POINT object with the first summand
795 * \param b EC_POINT object with the second summand
796 * \param ctx BN_CTX object (optional)
797 * \return 1 on success and 0 if an error occurred
798 */
799 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
800 const EC_POINT *b, BN_CTX *ctx);
801
802 /** Computes the double of a EC_POINT
803 * \param group underlying EC_GROUP object
804 * \param r EC_POINT object for the result (r = 2 * a)
805 * \param a EC_POINT object
806 * \param ctx BN_CTX object (optional)
807 * \return 1 on success and 0 if an error occurred
808 */
809 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
810 BN_CTX *ctx);
811
812 /** Computes the inverse of a EC_POINT
813 * \param group underlying EC_GROUP object
814 * \param a EC_POINT object to be inverted (it's used for the result as well)
815 * \param ctx BN_CTX object (optional)
816 * \return 1 on success and 0 if an error occurred
817 */
818 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
819
820 /** Checks whether the point is the neutral element of the group
821 * \param group the underlying EC_GROUP object
822 * \param p EC_POINT object
823 * \return 1 if the point is the neutral element and 0 otherwise
824 */
825 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
826
827 /** Checks whether the point is on the curve
828 * \param group underlying EC_GROUP object
829 * \param point EC_POINT object to check
830 * \param ctx BN_CTX object (optional)
831 * \return 1 if the point is on the curve, 0 if not, or -1 on error
832 */
833 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
834 BN_CTX *ctx);
835
836 /** Compares two EC_POINTs
837 * \param group underlying EC_GROUP object
838 * \param a first EC_POINT object
839 * \param b second EC_POINT object
840 * \param ctx BN_CTX object (optional)
841 * \return 1 if the points are not equal, 0 if they are, or -1 on error
842 */
843 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
844 BN_CTX *ctx);
845
846 # ifndef OPENSSL_NO_DEPRECATED_3_0
847 OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group,
848 EC_POINT *point, BN_CTX *ctx);
849 OSSL_DEPRECATEDIN_3_0 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
850 EC_POINT *points[], BN_CTX *ctx);
851
852 /** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i]
853 * \param group underlying EC_GROUP object
854 * \param r EC_POINT object for the result
855 * \param n BIGNUM with the multiplier for the group generator (optional)
856 * \param num number further summands
857 * \param p array of size num of EC_POINT objects
858 * \param m array of size num of BIGNUM objects
859 * \param ctx BN_CTX object (optional)
860 * \return 1 on success and 0 if an error occurred
861 */
862 OSSL_DEPRECATEDIN_3_0 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r,
863 const BIGNUM *n, size_t num,
864 const EC_POINT *p[], const BIGNUM *m[],
865 BN_CTX *ctx);
866 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
867
868 /** Computes r = generator * n + q * m
869 * \param group underlying EC_GROUP object
870 * \param r EC_POINT object for the result
871 * \param n BIGNUM with the multiplier for the group generator (optional)
872 * \param q EC_POINT object with the first factor of the second summand
873 * \param m BIGNUM with the second factor of the second summand
874 * \param ctx BN_CTX object (optional)
875 * \return 1 on success and 0 if an error occurred
876 */
877 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
878 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
879
880 # ifndef OPENSSL_NO_DEPRECATED_3_0
881 /** Stores multiples of generator for faster point multiplication
882 * \param group EC_GROUP object
883 * \param ctx BN_CTX object (optional)
884 * \return 1 on success and 0 if an error occurred
885 */
886 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
887
888 /** Reports whether a precomputation has been done
889 * \param group EC_GROUP object
890 * \return 1 if a pre-computation has been done and 0 otherwise
891 */
892 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
893 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
894
895 /********************************************************************/
896 /* ASN1 stuff */
897 /********************************************************************/
898
899 DECLARE_ASN1_ITEM(ECPKPARAMETERS)
900 DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
901 DECLARE_ASN1_ITEM(ECPARAMETERS)
902 DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
903
904 /*
905 * EC_GROUP_get_basis_type() returns the NID of the basis type used to
906 * represent the field elements
907 */
908 int EC_GROUP_get_basis_type(const EC_GROUP *);
909 # ifndef OPENSSL_NO_EC2M
910 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
911 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
912 unsigned int *k2, unsigned int *k3);
913 # endif
914
915 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
916 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
917
918 # define d2i_ECPKParameters_bio(bp,x) \
919 ASN1_d2i_bio_of(EC_GROUP, NULL, d2i_ECPKParameters, bp, x)
920 # define i2d_ECPKParameters_bio(bp,x) \
921 ASN1_i2d_bio_of(EC_GROUP, i2d_ECPKParameters, bp, x)
922 # define d2i_ECPKParameters_fp(fp,x) \
923 (EC_GROUP *)ASN1_d2i_fp(NULL, (d2i_of_void *)d2i_ECPKParameters, (fp), \
924 (void **)(x))
925 # define i2d_ECPKParameters_fp(fp,x) \
926 ASN1_i2d_fp((i2d_of_void *)i2d_ECPKParameters, (fp), (void *)(x))
927
928 # ifndef OPENSSL_NO_DEPRECATED_3_0
929 OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO *bp, const EC_GROUP *x,
930 int off);
931 # ifndef OPENSSL_NO_STDIO
932 OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x,
933 int off);
934 # endif
935 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
936
937 /********************************************************************/
938 /* EC_KEY functions */
939 /********************************************************************/
940
941 /* some values for the encoding_flag */
942 # define EC_PKEY_NO_PARAMETERS 0x001
943 # define EC_PKEY_NO_PUBKEY 0x002
944
945 /* some values for the flags field */
946 # define EC_FLAG_SM2_RANGE 0x0004
947 # define EC_FLAG_COFACTOR_ECDH 0x1000
948 # define EC_FLAG_CHECK_NAMED_GROUP 0x2000
949 # define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000
950 # define EC_FLAG_CHECK_NAMED_GROUP_MASK \
951 (EC_FLAG_CHECK_NAMED_GROUP | EC_FLAG_CHECK_NAMED_GROUP_NIST)
952
953 /* Deprecated flags - it was using 0x01..0x02 */
954 # define EC_FLAG_NON_FIPS_ALLOW 0x0000
955 # define EC_FLAG_FIPS_CHECKED 0x0000
956
957 # ifndef OPENSSL_NO_DEPRECATED_3_0
958 /**
959 * Creates a new EC_KEY object.
960 * \param ctx The library context for to use for this EC_KEY. May be NULL in
961 * which case the default library context is used.
962 * \return EC_KEY object or NULL if an error occurred.
963 */
964 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_ex(OSSL_LIB_CTX *ctx, const char *propq);
965
966 /**
967 * Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a
968 * NULL library context
969 * \return EC_KEY object or NULL if an error occurred.
970 */
971 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void);
972
973 OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key);
974
975 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags);
976
977 OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags);
978
979 OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key);
980
981 /**
982 * Creates a new EC_KEY object using a named curve as underlying
983 * EC_GROUP object.
984 * \param ctx The library context for to use for this EC_KEY. May be NULL in
985 * which case the default library context is used.
986 * \param propq Any property query string
987 * \param nid NID of the named curve.
988 * \return EC_KEY object or NULL if an error occurred.
989 */
990 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX *ctx,
991 const char *propq,
992 int nid);
993
994 /**
995 * Creates a new EC_KEY object using a named curve as underlying
996 * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL
997 * library context and property query string.
998 * \param nid NID of the named curve.
999 * \return EC_KEY object or NULL if an error occurred.
1000 */
1001 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid);
1002
1003 /** Frees a EC_KEY object.
1004 * \param key EC_KEY object to be freed.
1005 */
1006 OSSL_DEPRECATEDIN_3_0 void EC_KEY_free(EC_KEY *key);
1007
1008 /** Copies a EC_KEY object.
1009 * \param dst destination EC_KEY object
1010 * \param src src EC_KEY object
1011 * \return dst or NULL if an error occurred.
1012 */
1013 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
1014
1015 /** Creates a new EC_KEY object and copies the content from src to it.
1016 * \param src the source EC_KEY object
1017 * \return newly created EC_KEY object or NULL if an error occurred.
1018 */
1019 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_dup(const EC_KEY *src);
1020
1021 /** Increases the internal reference count of a EC_KEY object.
1022 * \param key EC_KEY object
1023 * \return 1 on success and 0 if an error occurred.
1024 */
1025 OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key);
1026
1027 /** Returns the ENGINE object of a EC_KEY object
1028 * \param eckey EC_KEY object
1029 * \return the ENGINE object (possibly NULL).
1030 */
1031 OSSL_DEPRECATEDIN_3_0 ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey);
1032
1033 /** Returns the EC_GROUP object of a EC_KEY object
1034 * \param key EC_KEY object
1035 * \return the EC_GROUP object (possibly NULL).
1036 */
1037 OSSL_DEPRECATEDIN_3_0 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
1038
1039 /** Sets the EC_GROUP of a EC_KEY object.
1040 * \param key EC_KEY object
1041 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
1042 * object will use an own copy of the EC_GROUP).
1043 * \return 1 on success and 0 if an error occurred.
1044 */
1045 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
1046
1047 /** Returns the private key of a EC_KEY object.
1048 * \param key EC_KEY object
1049 * \return a BIGNUM with the private key (possibly NULL).
1050 */
1051 OSSL_DEPRECATEDIN_3_0 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
1052
1053 /** Sets the private key of a EC_KEY object.
1054 * \param key EC_KEY object
1055 * \param prv BIGNUM with the private key (note: the EC_KEY object
1056 * will use an own copy of the BIGNUM).
1057 * \return 1 on success and 0 if an error occurred.
1058 */
1059 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
1060
1061 /** Returns the public key of a EC_KEY object.
1062 * \param key the EC_KEY object
1063 * \return a EC_POINT object with the public key (possibly NULL)
1064 */
1065 OSSL_DEPRECATEDIN_3_0 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
1066
1067 /** Sets the public key of a EC_KEY object.
1068 * \param key EC_KEY object
1069 * \param pub EC_POINT object with the public key (note: the EC_KEY object
1070 * will use an own copy of the EC_POINT object).
1071 * \return 1 on success and 0 if an error occurred.
1072 */
1073 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
1074
1075 OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
1076 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
1077 OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
1078 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey,
1079 point_conversion_form_t cform);
1080 # endif /*OPENSSL_NO_DEPRECATED_3_0 */
1081
1082 # define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
1083 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
1084
1085 # ifndef OPENSSL_NO_DEPRECATED_3_0
1086 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
1087 OSSL_DEPRECATEDIN_3_0 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
1088
1089 /* wrapper functions for the underlying EC_GROUP object */
1090 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
1091
1092 /** Creates a table of pre-computed multiples of the generator to
1093 * accelerate further EC_KEY operations.
1094 * \param key EC_KEY object
1095 * \param ctx BN_CTX object (optional)
1096 * \return 1 on success and 0 if an error occurred.
1097 */
1098 OSSL_DEPRECATEDIN_3_0 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
1099
1100 /** Creates a new ec private (and optional a new public) key.
1101 * \param key EC_KEY object
1102 * \return 1 on success and 0 if an error occurred.
1103 */
1104 OSSL_DEPRECATEDIN_3_0 int EC_KEY_generate_key(EC_KEY *key);
1105
1106 /** Verifies that a private and/or public key is valid.
1107 * \param key the EC_KEY object
1108 * \return 1 on success and 0 otherwise.
1109 */
1110 OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key);
1111
1112 /** Indicates if an EC_KEY can be used for signing.
1113 * \param eckey the EC_KEY object
1114 * \return 1 if can can sign and 0 otherwise.
1115 */
1116 OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey);
1117
1118 /** Sets a public key from affine coordinates performing
1119 * necessary NIST PKV tests.
1120 * \param key the EC_KEY object
1121 * \param x public key x coordinate
1122 * \param y public key y coordinate
1123 * \return 1 on success and 0 otherwise.
1124 */
1125 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
1126 BIGNUM *x,
1127 BIGNUM *y);
1128
1129 /** Encodes an EC_KEY public key to an allocated octet string
1130 * \param key key to encode
1131 * \param form point conversion form
1132 * \param pbuf returns pointer to allocated buffer
1133 * \param ctx BN_CTX object (optional)
1134 * \return the length of the encoded octet string or 0 if an error occurred
1135 */
1136 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key,
1137 point_conversion_form_t form,
1138 unsigned char **pbuf, BN_CTX *ctx);
1139
1140 /** Decodes a EC_KEY public key from a octet string
1141 * \param key key to decode
1142 * \param buf memory buffer with the encoded ec point
1143 * \param len length of the encoded ec point
1144 * \param ctx BN_CTX object (optional)
1145 * \return 1 on success and 0 if an error occurred
1146 */
1147
1148 OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf,
1149 size_t len, BN_CTX *ctx);
1150
1151 /** Decodes an EC_KEY private key from an octet string
1152 * \param key key to decode
1153 * \param buf memory buffer with the encoded private key
1154 * \param len length of the encoded key
1155 * \return 1 on success and 0 if an error occurred
1156 */
1157
1158 OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf,
1159 size_t len);
1160
1161 /** Encodes a EC_KEY private key to an octet string
1162 * \param key key to encode
1163 * \param buf memory buffer for the result. If NULL the function returns
1164 * required buffer size.
1165 * \param len length of the memory buffer
1166 * \return the length of the encoded octet string or 0 if an error occurred
1167 */
1168
1169 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key,
1170 unsigned char *buf, size_t len);
1171
1172 /** Encodes an EC_KEY private key to an allocated octet string
1173 * \param eckey key to encode
1174 * \param pbuf returns pointer to allocated buffer
1175 * \return the length of the encoded octet string or 0 if an error occurred
1176 */
1177 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey,
1178 unsigned char **pbuf);
1179
1180 /********************************************************************/
1181 /* de- and encoding functions for SEC1 ECPrivateKey */
1182 /********************************************************************/
1183
1184 /** Decodes a private key from a memory buffer.
1185 * \param key a pointer to a EC_KEY object which should be used (or NULL)
1186 * \param in pointer to memory with the DER encoded private key
1187 * \param len length of the DER encoded private key
1188 * \return the decoded private key or NULL if an error occurred.
1189 */
1190 OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECPrivateKey(EC_KEY **key,
1191 const unsigned char **in,
1192 long len);
1193
1194 /** Encodes a private key object and stores the result in a buffer.
1195 * \param key the EC_KEY object to encode
1196 * \param out the buffer for the result (if NULL the function returns number
1197 * of bytes needed).
1198 * \return 1 on success and 0 if an error occurred.
1199 */
1200 OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const EC_KEY *key,
1201 unsigned char **out);
1202
1203 /********************************************************************/
1204 /* de- and encoding functions for EC parameters */
1205 /********************************************************************/
1206
1207 /** Decodes ec parameter from a memory buffer.
1208 * \param key a pointer to a EC_KEY object which should be used (or NULL)
1209 * \param in pointer to memory with the DER encoded ec parameters
1210 * \param len length of the DER encoded ec parameters
1211 * \return a EC_KEY object with the decoded parameters or NULL if an error
1212 * occurred.
1213 */
1214 OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECParameters(EC_KEY **key,
1215 const unsigned char **in,
1216 long len);
1217
1218 /** Encodes ec parameter and stores the result in a buffer.
1219 * \param key the EC_KEY object with ec parameters to encode
1220 * \param out the buffer for the result (if NULL the function returns number
1221 * of bytes needed).
1222 * \return 1 on success and 0 if an error occurred.
1223 */
1224 OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key,
1225 unsigned char **out);
1226
1227 /********************************************************************/
1228 /* de- and encoding functions for EC public key */
1229 /* (octet string, not DER -- hence 'o2i' and 'i2o') */
1230 /********************************************************************/
1231
1232 /** Decodes an ec public key from a octet string.
1233 * \param key a pointer to a EC_KEY object which should be used
1234 * \param in memory buffer with the encoded public key
1235 * \param len length of the encoded public key
1236 * \return EC_KEY object with decoded public key or NULL if an error
1237 * occurred.
1238 */
1239 OSSL_DEPRECATEDIN_3_0 EC_KEY *o2i_ECPublicKey(EC_KEY **key,
1240 const unsigned char **in, long len);
1241
1242 /** Encodes an ec public key in an octet string.
1243 * \param key the EC_KEY object with the public key
1244 * \param out the buffer for the result (if NULL the function returns number
1245 * of bytes needed).
1246 * \return 1 on success and 0 if an error occurred
1247 */
1248 OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out);
1249
1250 /** Prints out the ec parameters on human readable form.
1251 * \param bp BIO object to which the information is printed
1252 * \param key EC_KEY object
1253 * \return 1 on success and 0 if an error occurred
1254 */
1255 OSSL_DEPRECATEDIN_3_0 int ECParameters_print(BIO *bp, const EC_KEY *key);
1256
1257 /** Prints out the contents of a EC_KEY object
1258 * \param bp BIO object to which the information is printed
1259 * \param key EC_KEY object
1260 * \param off line offset
1261 * \return 1 on success and 0 if an error occurred
1262 */
1263 OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
1264
1265 # ifndef OPENSSL_NO_STDIO
1266 /** Prints out the ec parameters on human readable form.
1267 * \param fp file descriptor to which the information is printed
1268 * \param key EC_KEY object
1269 * \return 1 on success and 0 if an error occurred
1270 */
1271 OSSL_DEPRECATEDIN_3_0 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
1272
1273 /** Prints out the contents of a EC_KEY object
1274 * \param fp file descriptor to which the information is printed
1275 * \param key EC_KEY object
1276 * \param off line offset
1277 * \return 1 on success and 0 if an error occurred
1278 */
1279 OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
1280 # endif /* OPENSSL_NO_STDIO */
1281
1282 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1283 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1284 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
1285 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
1286 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
1287 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_method(ENGINE *engine);
1288
1289 /** The old name for ecdh_KDF_X9_63
1290 * The ECDH KDF specification has been mistakingly attributed to ANSI X9.62,
1291 * it is actually specified in ANSI X9.63.
1292 * This identifier is retained for backwards compatibility
1293 */
1294 OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
1295 const unsigned char *Z, size_t Zlen,
1296 const unsigned char *sinfo,
1297 size_t sinfolen, const EVP_MD *md);
1298
1299 OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen,
1300 const EC_POINT *pub_key,
1301 const EC_KEY *ecdh,
1302 void *(*KDF)(const void *in,
1303 size_t inlen, void *out,
1304 size_t *outlen));
1305 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
1306
1307 typedef struct ECDSA_SIG_st ECDSA_SIG;
1308
1309 /** Allocates and initialize a ECDSA_SIG structure
1310 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1311 */
1312 ECDSA_SIG *ECDSA_SIG_new(void);
1313
1314 /** frees a ECDSA_SIG structure
1315 * \param sig pointer to the ECDSA_SIG structure
1316 */
1317 void ECDSA_SIG_free(ECDSA_SIG *sig);
1318
1319 /** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp
1320 * (*pp += length of the DER encoded signature)).
1321 * \param sig pointer to the ECDSA_SIG object
1322 * \param pp pointer to a unsigned char pointer for the output or NULL
1323 * \return the length of the DER encoded ECDSA_SIG object or a negative value
1324 * on error
1325 */
1326 DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG)
1327
1328 /** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp
1329 * (*pp += len)).
1330 * \param sig pointer to ECDSA_SIG pointer (may be NULL)
1331 * \param pp memory buffer with the DER encoded signature
1332 * \param len length of the buffer
1333 * \return pointer to the decoded ECDSA_SIG structure (or NULL)
1334 */
1335
1336 /** Accessor for r and s fields of ECDSA_SIG
1337 * \param sig pointer to ECDSA_SIG structure
1338 * \param pr pointer to BIGNUM pointer for r (may be NULL)
1339 * \param ps pointer to BIGNUM pointer for s (may be NULL)
1340 */
1341 void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
1342
1343 /** Accessor for r field of ECDSA_SIG
1344 * \param sig pointer to ECDSA_SIG structure
1345 */
1346 const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
1347
1348 /** Accessor for s field of ECDSA_SIG
1349 * \param sig pointer to ECDSA_SIG structure
1350 */
1351 const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
1352
1353 /** Setter for r and s fields of ECDSA_SIG
1354 * \param sig pointer to ECDSA_SIG structure
1355 * \param r pointer to BIGNUM for r
1356 * \param s pointer to BIGNUM for s
1357 */
1358 int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
1359
1360 # ifndef OPENSSL_NO_DEPRECATED_3_0
1361 /** Computes the ECDSA signature of the given hash value using
1362 * the supplied private key and returns the created signature.
1363 * \param dgst pointer to the hash value
1364 * \param dgst_len length of the hash value
1365 * \param eckey EC_KEY object containing a private EC key
1366 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1367 */
1368 OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst,
1369 int dgst_len, EC_KEY *eckey);
1370
1371 /** Computes ECDSA signature of a given hash value using the supplied
1372 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1373 * \param dgst pointer to the hash value to sign
1374 * \param dgstlen length of the hash value
1375 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1376 * \param rp BIGNUM with a pre-computed rp value (optional),
1377 * see ECDSA_sign_setup
1378 * \param eckey EC_KEY object containing a private EC key
1379 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1380 */
1381 OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst,
1382 int dgstlen, const BIGNUM *kinv,
1383 const BIGNUM *rp, EC_KEY *eckey);
1384
1385 /** Verifies that the supplied signature is a valid ECDSA
1386 * signature of the supplied hash value using the supplied public key.
1387 * \param dgst pointer to the hash value
1388 * \param dgst_len length of the hash value
1389 * \param sig ECDSA_SIG structure
1390 * \param eckey EC_KEY object containing a public EC key
1391 * \return 1 if the signature is valid, 0 if the signature is invalid
1392 * and -1 on error
1393 */
1394 OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1395 const ECDSA_SIG *sig, EC_KEY *eckey);
1396
1397 /** Precompute parts of the signing operation
1398 * \param eckey EC_KEY object containing a private EC key
1399 * \param ctx BN_CTX object (optional)
1400 * \param kinv BIGNUM pointer for the inverse of k
1401 * \param rp BIGNUM pointer for x coordinate of k * generator
1402 * \return 1 on success and 0 otherwise
1403 */
1404 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx,
1405 BIGNUM **kinv, BIGNUM **rp);
1406
1407 /** Computes ECDSA signature of a given hash value using the supplied
1408 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1409 * \param type this parameter is ignored
1410 * \param dgst pointer to the hash value to sign
1411 * \param dgstlen length of the hash value
1412 * \param sig memory for the DER encoded created signature
1413 * \param siglen pointer to the length of the returned signature
1414 * \param eckey EC_KEY object containing a private EC key
1415 * \return 1 on success and 0 otherwise
1416 */
1417 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst,
1418 int dgstlen, unsigned char *sig,
1419 unsigned int *siglen, EC_KEY *eckey);
1420
1421 /** Computes ECDSA signature of a given hash value using the supplied
1422 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1423 * \param type this parameter is ignored
1424 * \param dgst pointer to the hash value to sign
1425 * \param dgstlen length of the hash value
1426 * \param sig buffer to hold the DER encoded signature
1427 * \param siglen pointer to the length of the returned signature
1428 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1429 * \param rp BIGNUM with a pre-computed rp value (optional),
1430 * see ECDSA_sign_setup
1431 * \param eckey EC_KEY object containing a private EC key
1432 * \return 1 on success and 0 otherwise
1433 */
1434 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst,
1435 int dgstlen, unsigned char *sig,
1436 unsigned int *siglen, const BIGNUM *kinv,
1437 const BIGNUM *rp, EC_KEY *eckey);
1438
1439 /** Verifies that the given signature is valid ECDSA signature
1440 * of the supplied hash value using the specified public key.
1441 * \param type this parameter is ignored
1442 * \param dgst pointer to the hash value
1443 * \param dgstlen length of the hash value
1444 * \param sig pointer to the DER encoded signature
1445 * \param siglen length of the DER encoded signature
1446 * \param eckey EC_KEY object containing a public EC key
1447 * \return 1 if the signature is valid, 0 if the signature is invalid
1448 * and -1 on error
1449 */
1450 OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst,
1451 int dgstlen, const unsigned char *sig,
1452 int siglen, EC_KEY *eckey);
1453
1454 /** Returns the maximum length of the DER encoded signature
1455 * \param eckey EC_KEY object
1456 * \return numbers of bytes required for the DER encoded signature
1457 */
1458 OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey);
1459
1460 /********************************************************************/
1461 /* EC_KEY_METHOD constructors, destructors, writers and accessors */
1462 /********************************************************************/
1463
1464 OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
1465 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1466 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_init
1467 (EC_KEY_METHOD *meth,
1468 int (*init)(EC_KEY *key),
1469 void (*finish)(EC_KEY *key),
1470 int (*copy)(EC_KEY *dest, const EC_KEY *src),
1471 int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
1472 int (*set_private)(EC_KEY *key, const BIGNUM *priv_key),
1473 int (*set_public)(EC_KEY *key, const EC_POINT *pub_key));
1474
1475 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1476 int (*keygen)(EC_KEY *key));
1477
1478 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key
1479 (EC_KEY_METHOD *meth,
1480 int (*ckey)(unsigned char **psec, size_t *pseclen,
1481 const EC_POINT *pub_key, const EC_KEY *ecdh));
1482
1483 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign
1484 (EC_KEY_METHOD *meth,
1485 int (*sign)(int type, const unsigned char *dgst,
1486 int dlen, unsigned char *sig,
1487 unsigned int *siglen,
1488 const BIGNUM *kinv, const BIGNUM *r,
1489 EC_KEY *eckey),
1490 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1491 BIGNUM **kinvp, BIGNUM **rp),
1492 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
1493 int dgst_len,
1494 const BIGNUM *in_kinv,
1495 const BIGNUM *in_r,
1496 EC_KEY *eckey));
1497
1498 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify
1499 (EC_KEY_METHOD *meth,
1500 int (*verify)(int type, const unsigned
1501 char *dgst, int dgst_len,
1502 const unsigned char *sigbuf,
1503 int sig_len, EC_KEY *eckey),
1504 int (*verify_sig)(const unsigned char *dgst,
1505 int dgst_len, const ECDSA_SIG *sig,
1506 EC_KEY *eckey));
1507
1508 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_init
1509 (const EC_KEY_METHOD *meth,
1510 int (**pinit)(EC_KEY *key),
1511 void (**pfinish)(EC_KEY *key),
1512 int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
1513 int (**pset_group)(EC_KEY *key, const EC_GROUP *grp),
1514 int (**pset_private)(EC_KEY *key, const BIGNUM *priv_key),
1515 int (**pset_public)(EC_KEY *key, const EC_POINT *pub_key));
1516
1517 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen
1518 (const EC_KEY_METHOD *meth, int (**pkeygen)(EC_KEY *key));
1519
1520 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key
1521 (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
1527 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign
1528 (const EC_KEY_METHOD *meth,
1529 int (**psign)(int type, const unsigned char *dgst,
1530 int dlen, unsigned char *sig,
1531 unsigned int *siglen,
1532 const BIGNUM *kinv, const BIGNUM *r,
1533 EC_KEY *eckey),
1534 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1535 BIGNUM **kinvp, BIGNUM **rp),
1536 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
1537 int dgst_len,
1538 const BIGNUM *in_kinv,
1539 const BIGNUM *in_r,
1540 EC_KEY *eckey));
1541
1542 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify
1543 (const EC_KEY_METHOD *meth,
1544 int (**pverify)(int type, const unsigned
1545 char *dgst, int dgst_len,
1546 const unsigned char *sigbuf,
1547 int sig_len, EC_KEY *eckey),
1548 int (**pverify_sig)(const unsigned char *dgst,
1549 int dgst_len,
1550 const ECDSA_SIG *sig,
1551 EC_KEY *eckey));
1552 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
1553
1554 # define EVP_EC_gen(curve) \
1555 EVP_PKEY_Q_keygen(NULL, NULL, "EC", (char *)(strstr(curve, "")))
1556 /* strstr is used to enable type checking for the variadic string arg */
1557 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \
1558 d2i_ECParameters, x)
1559
1560 # ifndef __cplusplus
1561 # if defined(__SUNPRO_C)
1562 # if __SUNPRO_C >= 0x520
1563 # pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
1564 # endif
1565 # endif
1566 # endif
1567
1568 # endif
1569 # ifdef __cplusplus
1570 }
1571 # endif
1572 #endif
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