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[thirdparty/openssl.git] / include / openssl / ec.h
1 /*
2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 *
13 * Portions of the attached software ("Contribution") are developed by
14 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
15 *
16 * The Contribution is licensed pursuant to the OpenSSL open source
17 * license provided above.
18 *
19 * The elliptic curve binary polynomial software is originally written by
20 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
21 *
22 */
23
24 #ifndef HEADER_EC_H
25 # define HEADER_EC_H
26
27 # include <openssl/opensslconf.h>
28
29 # ifndef OPENSSL_NO_EC
30 # include <openssl/asn1.h>
31 # include <openssl/symhacks.h>
32 # if OPENSSL_API_COMPAT < 0x10100000L
33 # include <openssl/bn.h>
34 # endif
35 # ifdef __cplusplus
36 extern "C" {
37 # endif
38
39 # ifndef OPENSSL_ECC_MAX_FIELD_BITS
40 # define OPENSSL_ECC_MAX_FIELD_BITS 661
41 # endif
42
43 /** Enum for the point conversion form as defined in X9.62 (ECDSA)
44 * for the encoding of a elliptic curve point (x,y) */
45 typedef enum {
46 /** the point is encoded as z||x, where the octet z specifies
47 * which solution of the quadratic equation y is */
48 POINT_CONVERSION_COMPRESSED = 2,
49 /** the point is encoded as z||x||y, where z is the octet 0x04 */
50 POINT_CONVERSION_UNCOMPRESSED = 4,
51 /** the point is encoded as z||x||y, where the octet z specifies
52 * which solution of the quadratic equation y is */
53 POINT_CONVERSION_HYBRID = 6
54 } point_conversion_form_t;
55
56 typedef struct ec_method_st EC_METHOD;
57 typedef struct ec_group_st EC_GROUP;
58 typedef struct ec_point_st EC_POINT;
59 typedef struct ecpk_parameters_st ECPKPARAMETERS;
60 typedef struct ec_parameters_st ECPARAMETERS;
61
62 /********************************************************************/
63 /* EC_METHODs for curves over GF(p) */
64 /********************************************************************/
65
66 /** Returns the basic GFp ec methods which provides the basis for the
67 * optimized methods.
68 * \return EC_METHOD object
69 */
70 const EC_METHOD *EC_GFp_simple_method(void);
71
72 /** Returns GFp methods using montgomery multiplication.
73 * \return EC_METHOD object
74 */
75 const EC_METHOD *EC_GFp_mont_method(void);
76
77 /** Returns GFp methods using optimized methods for NIST recommended curves
78 * \return EC_METHOD object
79 */
80 const EC_METHOD *EC_GFp_nist_method(void);
81
82 # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
83 /** Returns 64-bit optimized methods for nistp224
84 * \return EC_METHOD object
85 */
86 const EC_METHOD *EC_GFp_nistp224_method(void);
87
88 /** Returns 64-bit optimized methods for nistp256
89 * \return EC_METHOD object
90 */
91 const EC_METHOD *EC_GFp_nistp256_method(void);
92
93 /** Returns 64-bit optimized methods for nistp521
94 * \return EC_METHOD object
95 */
96 const EC_METHOD *EC_GFp_nistp521_method(void);
97 # endif
98
99 # ifndef OPENSSL_NO_EC2M
100 /********************************************************************/
101 /* EC_METHOD for curves over GF(2^m) */
102 /********************************************************************/
103
104 /** Returns the basic GF2m ec method
105 * \return EC_METHOD object
106 */
107 const EC_METHOD *EC_GF2m_simple_method(void);
108
109 # endif
110
111 /********************************************************************/
112 /* EC_GROUP functions */
113 /********************************************************************/
114
115 /** Creates a new EC_GROUP object
116 * \param meth EC_METHOD to use
117 * \return newly created EC_GROUP object or NULL in case of an error.
118 */
119 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
120
121 /** Frees a EC_GROUP object
122 * \param group EC_GROUP object to be freed.
123 */
124 void EC_GROUP_free(EC_GROUP *group);
125
126 /** Clears and frees a EC_GROUP object
127 * \param group EC_GROUP object to be cleared and freed.
128 */
129 void EC_GROUP_clear_free(EC_GROUP *group);
130
131 /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
132 * \param dst destination EC_GROUP object
133 * \param src source EC_GROUP object
134 * \return 1 on success and 0 if an error occurred.
135 */
136 int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
137
138 /** Creates a new EC_GROUP object and copies the copies the content
139 * form src to the newly created EC_KEY object
140 * \param src source EC_GROUP object
141 * \return newly created EC_GROUP object or NULL in case of an error.
142 */
143 EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
144
145 /** Returns the EC_METHOD of the EC_GROUP object.
146 * \param group EC_GROUP object
147 * \return EC_METHOD used in this EC_GROUP object.
148 */
149 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
150
151 /** Returns the field type of the EC_METHOD.
152 * \param meth EC_METHOD object
153 * \return NID of the underlying field type OID.
154 */
155 int EC_METHOD_get_field_type(const EC_METHOD *meth);
156
157 /** Sets the generator and it's order/cofactor of a EC_GROUP object.
158 * \param group EC_GROUP object
159 * \param generator EC_POINT object with the generator.
160 * \param order the order of the group generated by the generator.
161 * \param cofactor the index of the sub-group generated by the generator
162 * in the group of all points on the elliptic curve.
163 * \return 1 on success and 0 if an error occurred
164 */
165 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
166 const BIGNUM *order, const BIGNUM *cofactor);
167
168 /** Returns the generator of a EC_GROUP object.
169 * \param group EC_GROUP object
170 * \return the currently used generator (possibly NULL).
171 */
172 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
173
174 /** Returns the montgomery data for order(Generator)
175 * \param group EC_GROUP object
176 * \return the currently used generator (possibly NULL).
177 */
178 BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
179
180 /** Gets the order of a EC_GROUP
181 * \param group EC_GROUP object
182 * \param order BIGNUM to which the order is copied
183 * \param ctx unused
184 * \return 1 on success and 0 if an error occurred
185 */
186 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
187
188 /** Gets the order of an EC_GROUP
189 * \param group EC_GROUP object
190 * \return the group order
191 */
192
193 const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
194
195 /** Gets the number of bits of the order of an EC_GROUP
196 * \param group EC_GROUP object
197 * \return number of bits of group order.
198 */
199
200 int EC_GROUP_order_bits(const EC_GROUP *group);
201
202 /** Gets the cofactor of a EC_GROUP
203 * \param group EC_GROUP object
204 * \param cofactor BIGNUM to which the cofactor is copied
205 * \param ctx unused
206 * \return 1 on success and 0 if an error occurred
207 */
208 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
209 BN_CTX *ctx);
210
211 /** Gets the cofactor of an EC_GROUP
212 * \param group EC_GROUP object
213 * \return the group cofactor
214 */
215
216 const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group);
217
218 /** Sets the name of a EC_GROUP object
219 * \param group EC_GROUP object
220 * \param nid NID of the curve name OID
221 */
222 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
223
224 /** Returns the curve name of a EC_GROUP object
225 * \param group EC_GROUP object
226 * \return NID of the curve name OID or 0 if not set.
227 */
228 int EC_GROUP_get_curve_name(const EC_GROUP *group);
229
230 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
231 int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
232
233 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
234 point_conversion_form_t form);
235 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
236
237 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
238 size_t EC_GROUP_get_seed_len(const EC_GROUP *);
239 size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
240
241 /** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
242 * \param group EC_GROUP object
243 * \param p BIGNUM with the prime number
244 * \param a BIGNUM with parameter a of the equation
245 * \param b BIGNUM with parameter b of the equation
246 * \param ctx BN_CTX object (optional)
247 * \return 1 on success and 0 if an error occurred
248 */
249 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
250 const BIGNUM *b, BN_CTX *ctx);
251
252 /** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
253 * \param group EC_GROUP object
254 * \param p BIGNUM for the prime number
255 * \param a BIGNUM for parameter a of the equation
256 * \param b BIGNUM for parameter b of the equation
257 * \param ctx BN_CTX object (optional)
258 * \return 1 on success and 0 if an error occurred
259 */
260 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
261 BIGNUM *b, BN_CTX *ctx);
262
263 # ifndef OPENSSL_NO_EC2M
264 /** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
265 * \param group EC_GROUP object
266 * \param p BIGNUM with the polynomial defining the underlying field
267 * \param a BIGNUM with parameter a of the equation
268 * \param b BIGNUM with parameter b of the equation
269 * \param ctx BN_CTX object (optional)
270 * \return 1 on success and 0 if an error occurred
271 */
272 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
273 const BIGNUM *b, BN_CTX *ctx);
274
275 /** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
276 * \param group EC_GROUP object
277 * \param p BIGNUM for the polynomial defining the underlying field
278 * \param a BIGNUM for parameter a of the equation
279 * \param b BIGNUM for parameter b of the equation
280 * \param ctx BN_CTX object (optional)
281 * \return 1 on success and 0 if an error occurred
282 */
283 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
284 BIGNUM *b, BN_CTX *ctx);
285 # endif
286 /** Returns the number of bits needed to represent a field element
287 * \param group EC_GROUP object
288 * \return number of bits needed to represent a field element
289 */
290 int EC_GROUP_get_degree(const EC_GROUP *group);
291
292 /** Checks whether the parameter in the EC_GROUP define a valid ec group
293 * \param group EC_GROUP object
294 * \param ctx BN_CTX object (optional)
295 * \return 1 if group is a valid ec group and 0 otherwise
296 */
297 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
298
299 /** Checks whether the discriminant of the elliptic curve is zero or not
300 * \param group EC_GROUP object
301 * \param ctx BN_CTX object (optional)
302 * \return 1 if the discriminant is not zero and 0 otherwise
303 */
304 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
305
306 /** Compares two EC_GROUP objects
307 * \param a first EC_GROUP object
308 * \param b second EC_GROUP object
309 * \param ctx BN_CTX object (optional)
310 * \return 0 if both groups are equal and 1 otherwise
311 */
312 int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
313
314 /*
315 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
316 * choosing an appropriate EC_METHOD
317 */
318
319 /** Creates a new EC_GROUP object with the specified parameters defined
320 * over GFp (defined by the equation y^2 = x^3 + a*x + b)
321 * \param p BIGNUM with the prime number
322 * \param a BIGNUM with the parameter a of the equation
323 * \param b BIGNUM with the parameter b of the equation
324 * \param ctx BN_CTX object (optional)
325 * \return newly created EC_GROUP object with the specified parameters
326 */
327 EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
328 const BIGNUM *b, BN_CTX *ctx);
329 # ifndef OPENSSL_NO_EC2M
330 /** Creates a new EC_GROUP object with the specified parameters defined
331 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
332 * \param p BIGNUM with the polynomial defining the underlying field
333 * \param a BIGNUM with the parameter a of the equation
334 * \param b BIGNUM with the parameter b of the equation
335 * \param ctx BN_CTX object (optional)
336 * \return newly created EC_GROUP object with the specified parameters
337 */
338 EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
339 const BIGNUM *b, BN_CTX *ctx);
340 # endif
341
342 /** Creates a EC_GROUP object with a curve specified by a NID
343 * \param nid NID of the OID of the curve name
344 * \return newly created EC_GROUP object with specified curve or NULL
345 * if an error occurred
346 */
347 EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
348
349 /** Creates a new EC_GROUP object from an ECPARAMETERS object
350 * \param params pointer to the ECPARAMETERS object
351 * \return newly created EC_GROUP object with specified curve or NULL
352 * if an error occurred
353 */
354 EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
355
356 /** Creates an ECPARAMETERS object for the the given EC_GROUP object.
357 * \param group pointer to the EC_GROUP object
358 * \param params pointer to an existing ECPARAMETERS object or NULL
359 * \return pointer to the new ECPARAMETERS object or NULL
360 * if an error occurred.
361 */
362 ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
363 ECPARAMETERS *params);
364
365 /** Creates a new EC_GROUP object from an ECPKPARAMETERS object
366 * \param params pointer to an existing ECPKPARAMETERS object, or NULL
367 * \return newly created EC_GROUP object with specified curve, or NULL
368 * if an error occurred
369 */
370 EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
371
372 /** Creates an ECPKPARAMETERS object for the the given EC_GROUP object.
373 * \param group pointer to the EC_GROUP object
374 * \param params pointer to an existing ECPKPARAMETERS object or NULL
375 * \return pointer to the new ECPKPARAMETERS object or NULL
376 * if an error occurred.
377 */
378 ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
379 ECPKPARAMETERS *params);
380
381 /********************************************************************/
382 /* handling of internal curves */
383 /********************************************************************/
384
385 typedef struct {
386 int nid;
387 const char *comment;
388 } EC_builtin_curve;
389
390 /*
391 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
392 * available curves or zero if a error occurred. In case r is not zero,
393 * nitems EC_builtin_curve structures are filled with the data of the first
394 * nitems internal groups
395 */
396 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
397
398 const char *EC_curve_nid2nist(int nid);
399 int EC_curve_nist2nid(const char *name);
400
401 /********************************************************************/
402 /* EC_POINT functions */
403 /********************************************************************/
404
405 /** Creates a new EC_POINT object for the specified EC_GROUP
406 * \param group EC_GROUP the underlying EC_GROUP object
407 * \return newly created EC_POINT object or NULL if an error occurred
408 */
409 EC_POINT *EC_POINT_new(const EC_GROUP *group);
410
411 /** Frees a EC_POINT object
412 * \param point EC_POINT object to be freed
413 */
414 void EC_POINT_free(EC_POINT *point);
415
416 /** Clears and frees a EC_POINT object
417 * \param point EC_POINT object to be cleared and freed
418 */
419 void EC_POINT_clear_free(EC_POINT *point);
420
421 /** Copies EC_POINT object
422 * \param dst destination EC_POINT object
423 * \param src source EC_POINT object
424 * \return 1 on success and 0 if an error occurred
425 */
426 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
427
428 /** Creates a new EC_POINT object and copies the content of the supplied
429 * EC_POINT
430 * \param src source EC_POINT object
431 * \param group underlying the EC_GROUP object
432 * \return newly created EC_POINT object or NULL if an error occurred
433 */
434 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
435
436 /** Returns the EC_METHOD used in EC_POINT object
437 * \param point EC_POINT object
438 * \return the EC_METHOD used
439 */
440 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
441
442 /** Sets a point to infinity (neutral element)
443 * \param group underlying EC_GROUP object
444 * \param point EC_POINT to set to infinity
445 * \return 1 on success and 0 if an error occurred
446 */
447 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
448
449 /** Sets the jacobian projective coordinates of a EC_POINT over GFp
450 * \param group underlying EC_GROUP object
451 * \param p EC_POINT object
452 * \param x BIGNUM with the x-coordinate
453 * \param y BIGNUM with the y-coordinate
454 * \param z BIGNUM with the z-coordinate
455 * \param ctx BN_CTX object (optional)
456 * \return 1 on success and 0 if an error occurred
457 */
458 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
459 EC_POINT *p, const BIGNUM *x,
460 const BIGNUM *y, const BIGNUM *z,
461 BN_CTX *ctx);
462
463 /** Gets the jacobian projective coordinates of a EC_POINT over GFp
464 * \param group underlying EC_GROUP object
465 * \param p EC_POINT object
466 * \param x BIGNUM for the x-coordinate
467 * \param y BIGNUM for the y-coordinate
468 * \param z BIGNUM for the z-coordinate
469 * \param ctx BN_CTX object (optional)
470 * \return 1 on success and 0 if an error occurred
471 */
472 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
473 const EC_POINT *p, BIGNUM *x,
474 BIGNUM *y, BIGNUM *z,
475 BN_CTX *ctx);
476
477 /** Sets the affine coordinates of a EC_POINT over GFp
478 * \param group underlying EC_GROUP object
479 * \param p EC_POINT object
480 * \param x BIGNUM with the x-coordinate
481 * \param y BIGNUM with the y-coordinate
482 * \param ctx BN_CTX object (optional)
483 * \return 1 on success and 0 if an error occurred
484 */
485 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
486 const BIGNUM *x, const BIGNUM *y,
487 BN_CTX *ctx);
488
489 /** Gets the affine coordinates of a EC_POINT over GFp
490 * \param group underlying EC_GROUP object
491 * \param p EC_POINT object
492 * \param x BIGNUM for the x-coordinate
493 * \param y BIGNUM for the y-coordinate
494 * \param ctx BN_CTX object (optional)
495 * \return 1 on success and 0 if an error occurred
496 */
497 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
498 const EC_POINT *p, BIGNUM *x,
499 BIGNUM *y, BN_CTX *ctx);
500
501 /** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
502 * \param group underlying EC_GROUP object
503 * \param p EC_POINT object
504 * \param x BIGNUM with x-coordinate
505 * \param y_bit integer with the y-Bit (either 0 or 1)
506 * \param ctx BN_CTX object (optional)
507 * \return 1 on success and 0 if an error occurred
508 */
509 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
510 EC_POINT *p, const BIGNUM *x,
511 int y_bit, BN_CTX *ctx);
512 # ifndef OPENSSL_NO_EC2M
513 /** Sets the affine coordinates of a EC_POINT over GF2m
514 * \param group underlying EC_GROUP object
515 * \param p EC_POINT object
516 * \param x BIGNUM with the x-coordinate
517 * \param y BIGNUM with the y-coordinate
518 * \param ctx BN_CTX object (optional)
519 * \return 1 on success and 0 if an error occurred
520 */
521 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
522 const BIGNUM *x, const BIGNUM *y,
523 BN_CTX *ctx);
524
525 /** Gets the affine coordinates of a EC_POINT over GF2m
526 * \param group underlying EC_GROUP object
527 * \param p EC_POINT object
528 * \param x BIGNUM for the x-coordinate
529 * \param y BIGNUM for the y-coordinate
530 * \param ctx BN_CTX object (optional)
531 * \return 1 on success and 0 if an error occurred
532 */
533 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
534 const EC_POINT *p, BIGNUM *x,
535 BIGNUM *y, BN_CTX *ctx);
536
537 /** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
538 * \param group underlying EC_GROUP object
539 * \param p EC_POINT object
540 * \param x BIGNUM with x-coordinate
541 * \param y_bit integer with the y-Bit (either 0 or 1)
542 * \param ctx BN_CTX object (optional)
543 * \return 1 on success and 0 if an error occurred
544 */
545 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
546 EC_POINT *p, const BIGNUM *x,
547 int y_bit, BN_CTX *ctx);
548 # endif
549 /** Encodes a EC_POINT object to a octet string
550 * \param group underlying EC_GROUP object
551 * \param p EC_POINT object
552 * \param form point conversion form
553 * \param buf memory buffer for the result. If NULL the function returns
554 * required buffer size.
555 * \param len length of the memory buffer
556 * \param ctx BN_CTX object (optional)
557 * \return the length of the encoded octet string or 0 if an error occurred
558 */
559 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
560 point_conversion_form_t form,
561 unsigned char *buf, size_t len, BN_CTX *ctx);
562
563 /** Decodes a EC_POINT from a octet string
564 * \param group underlying EC_GROUP object
565 * \param p EC_POINT object
566 * \param buf memory buffer with the encoded ec point
567 * \param len length of the encoded ec point
568 * \param ctx BN_CTX object (optional)
569 * \return 1 on success and 0 if an error occurred
570 */
571 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
572 const unsigned char *buf, size_t len, BN_CTX *ctx);
573
574 /** Encodes an EC_POINT object to an allocated octet string
575 * \param group underlying EC_GROUP object
576 * \param point EC_POINT object
577 * \param form point conversion form
578 * \param pbuf returns pointer to allocated buffer
579 * \param len length of the memory buffer
580 * \param ctx BN_CTX object (optional)
581 * \return the length of the encoded octet string or 0 if an error occurred
582 */
583
584 size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
585 point_conversion_form_t form,
586 unsigned char **pbuf, BN_CTX *ctx);
587
588 /* other interfaces to point2oct/oct2point: */
589 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
590 point_conversion_form_t form, BIGNUM *, BN_CTX *);
591 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
592 EC_POINT *, BN_CTX *);
593 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
594 point_conversion_form_t form, BN_CTX *);
595 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
596 EC_POINT *, BN_CTX *);
597
598 /********************************************************************/
599 /* functions for doing EC_POINT arithmetic */
600 /********************************************************************/
601
602 /** Computes the sum of two EC_POINT
603 * \param group underlying EC_GROUP object
604 * \param r EC_POINT object for the result (r = a + b)
605 * \param a EC_POINT object with the first summand
606 * \param b EC_POINT object with the second summand
607 * \param ctx BN_CTX object (optional)
608 * \return 1 on success and 0 if an error occurred
609 */
610 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
611 const EC_POINT *b, BN_CTX *ctx);
612
613 /** Computes the double of a EC_POINT
614 * \param group underlying EC_GROUP object
615 * \param r EC_POINT object for the result (r = 2 * a)
616 * \param a EC_POINT object
617 * \param ctx BN_CTX object (optional)
618 * \return 1 on success and 0 if an error occurred
619 */
620 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
621 BN_CTX *ctx);
622
623 /** Computes the inverse of a EC_POINT
624 * \param group underlying EC_GROUP object
625 * \param a EC_POINT object to be inverted (it's used for the result as well)
626 * \param ctx BN_CTX object (optional)
627 * \return 1 on success and 0 if an error occurred
628 */
629 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
630
631 /** Checks whether the point is the neutral element of the group
632 * \param group the underlying EC_GROUP object
633 * \param p EC_POINT object
634 * \return 1 if the point is the neutral element and 0 otherwise
635 */
636 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
637
638 /** Checks whether the point is on the curve
639 * \param group underlying EC_GROUP object
640 * \param point EC_POINT object to check
641 * \param ctx BN_CTX object (optional)
642 * \return 1 if point if on the curve and 0 otherwise
643 */
644 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
645 BN_CTX *ctx);
646
647 /** Compares two EC_POINTs
648 * \param group underlying EC_GROUP object
649 * \param a first EC_POINT object
650 * \param b second EC_POINT object
651 * \param ctx BN_CTX object (optional)
652 * \return 0 if both points are equal and a value != 0 otherwise
653 */
654 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
655 BN_CTX *ctx);
656
657 int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
658 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
659 EC_POINT *points[], BN_CTX *ctx);
660
661 /** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i]
662 * \param group underlying EC_GROUP object
663 * \param r EC_POINT object for the result
664 * \param n BIGNUM with the multiplier for the group generator (optional)
665 * \param num number further summands
666 * \param p array of size num of EC_POINT objects
667 * \param m array of size num of BIGNUM objects
668 * \param ctx BN_CTX object (optional)
669 * \return 1 on success and 0 if an error occurred
670 */
671 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
672 size_t num, const EC_POINT *p[], const BIGNUM *m[],
673 BN_CTX *ctx);
674
675 /** Computes r = generator * n + q * m
676 * \param group underlying EC_GROUP object
677 * \param r EC_POINT object for the result
678 * \param n BIGNUM with the multiplier for the group generator (optional)
679 * \param q EC_POINT object with the first factor of the second summand
680 * \param m BIGNUM with the second factor of the second summand
681 * \param ctx BN_CTX object (optional)
682 * \return 1 on success and 0 if an error occurred
683 */
684 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
685 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
686
687 /** Stores multiples of generator for faster point multiplication
688 * \param group EC_GROUP object
689 * \param ctx BN_CTX object (optional)
690 * \return 1 on success and 0 if an error occurred
691 */
692 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
693
694 /** Reports whether a precomputation has been done
695 * \param group EC_GROUP object
696 * \return 1 if a pre-computation has been done and 0 otherwise
697 */
698 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
699
700 /********************************************************************/
701 /* ASN1 stuff */
702 /********************************************************************/
703
704 DECLARE_ASN1_ITEM(ECPKPARAMETERS)
705 DECLARE_ASN1_ITEM(ECPARAMETERS)
706
707 /*
708 * EC_GROUP_get_basis_type() returns the NID of the basis type used to
709 * represent the field elements
710 */
711 int EC_GROUP_get_basis_type(const EC_GROUP *);
712 # ifndef OPENSSL_NO_EC2M
713 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
714 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
715 unsigned int *k2, unsigned int *k3);
716 # endif
717
718 # define OPENSSL_EC_EXPLICIT_CURVE 0x000
719 # define OPENSSL_EC_NAMED_CURVE 0x001
720
721 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
722 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
723
724 # define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
725 # define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
726 # define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
727 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
728 # define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
729 (unsigned char *)(x))
730
731 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
732 # ifndef OPENSSL_NO_STDIO
733 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
734 # endif
735
736 /********************************************************************/
737 /* EC_KEY functions */
738 /********************************************************************/
739
740 /* some values for the encoding_flag */
741 # define EC_PKEY_NO_PARAMETERS 0x001
742 # define EC_PKEY_NO_PUBKEY 0x002
743
744 /* some values for the flags field */
745 # define EC_FLAG_NON_FIPS_ALLOW 0x1
746 # define EC_FLAG_FIPS_CHECKED 0x2
747 # define EC_FLAG_COFACTOR_ECDH 0x1000
748
749 /** Creates a new EC_KEY object.
750 * \return EC_KEY object or NULL if an error occurred.
751 */
752 EC_KEY *EC_KEY_new(void);
753
754 int EC_KEY_get_flags(const EC_KEY *key);
755
756 void EC_KEY_set_flags(EC_KEY *key, int flags);
757
758 void EC_KEY_clear_flags(EC_KEY *key, int flags);
759
760 /** Creates a new EC_KEY object using a named curve as underlying
761 * EC_GROUP object.
762 * \param nid NID of the named curve.
763 * \return EC_KEY object or NULL if an error occurred.
764 */
765 EC_KEY *EC_KEY_new_by_curve_name(int nid);
766
767 /** Frees a EC_KEY object.
768 * \param key EC_KEY object to be freed.
769 */
770 void EC_KEY_free(EC_KEY *key);
771
772 /** Copies a EC_KEY object.
773 * \param dst destination EC_KEY object
774 * \param src src EC_KEY object
775 * \return dst or NULL if an error occurred.
776 */
777 EC_KEY *EC_KEY_copy(EC_KEY *dst, EC_KEY *src);
778
779 /** Creates a new EC_KEY object and copies the content from src to it.
780 * \param src the source EC_KEY object
781 * \return newly created EC_KEY object or NULL if an error occurred.
782 */
783 EC_KEY *EC_KEY_dup(EC_KEY *src);
784
785 /** Increases the internal reference count of a EC_KEY object.
786 * \param key EC_KEY object
787 * \return 1 on success and 0 if an error occurred.
788 */
789 int EC_KEY_up_ref(EC_KEY *key);
790
791 /** Returns the EC_GROUP object of a EC_KEY object
792 * \param key EC_KEY object
793 * \return the EC_GROUP object (possibly NULL).
794 */
795 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
796
797 /** Sets the EC_GROUP of a EC_KEY object.
798 * \param key EC_KEY object
799 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
800 * object will use an own copy of the EC_GROUP).
801 * \return 1 on success and 0 if an error occurred.
802 */
803 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
804
805 /** Returns the private key of a EC_KEY object.
806 * \param key EC_KEY object
807 * \return a BIGNUM with the private key (possibly NULL).
808 */
809 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
810
811 /** Sets the private key of a EC_KEY object.
812 * \param key EC_KEY object
813 * \param prv BIGNUM with the private key (note: the EC_KEY object
814 * will use an own copy of the BIGNUM).
815 * \return 1 on success and 0 if an error occurred.
816 */
817 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
818
819 /** Returns the public key of a EC_KEY object.
820 * \param key the EC_KEY object
821 * \return a EC_POINT object with the public key (possibly NULL)
822 */
823 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
824
825 /** Sets the public key of a EC_KEY object.
826 * \param key EC_KEY object
827 * \param pub EC_POINT object with the public key (note: the EC_KEY object
828 * will use an own copy of the EC_POINT object).
829 * \return 1 on success and 0 if an error occurred.
830 */
831 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
832
833 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
834 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
835 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
836 void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
837
838 #define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
839 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
840 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
841 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
842
843 /* wrapper functions for the underlying EC_GROUP object */
844 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
845
846 /** Creates a table of pre-computed multiples of the generator to
847 * accelerate further EC_KEY operations.
848 * \param key EC_KEY object
849 * \param ctx BN_CTX object (optional)
850 * \return 1 on success and 0 if an error occurred.
851 */
852 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
853
854 /** Creates a new ec private (and optional a new public) key.
855 * \param key EC_KEY object
856 * \return 1 on success and 0 if an error occurred.
857 */
858 int EC_KEY_generate_key(EC_KEY *key);
859
860 /** Verifies that a private and/or public key is valid.
861 * \param key the EC_KEY object
862 * \return 1 on success and 0 otherwise.
863 */
864 int EC_KEY_check_key(const EC_KEY *key);
865
866 /** Indicates if an EC_KEY can be used for signing.
867 * \param key the EC_KEY object
868 * \return 1 if can can sign and 0 otherwise.
869 */
870 int EC_KEY_can_sign(const EC_KEY *eckey);
871
872 /** Sets a public key from affine coordinates performing
873 * necessary NIST PKV tests.
874 * \param key the EC_KEY object
875 * \param x public key x coordinate
876 * \param y public key y coordinate
877 * \return 1 on success and 0 otherwise.
878 */
879 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
880 BIGNUM *y);
881
882 /** Encodes an EC_KEY public key to an allocated octet string
883 * \param key key to encode
884 * \param form point conversion form
885 * \param pbuf returns pointer to allocated buffer
886 * \param len length of the memory buffer
887 * \param ctx BN_CTX object (optional)
888 * \return the length of the encoded octet string or 0 if an error occurred
889 */
890
891 size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
892 unsigned char **pbuf, BN_CTX *ctx);
893
894 /** Decodes a EC_KEY public key from a octet string
895 * \param key key to decode
896 * \param buf memory buffer with the encoded ec point
897 * \param len length of the encoded ec point
898 * \param ctx BN_CTX object (optional)
899 * \return 1 on success and 0 if an error occurred
900 */
901
902 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len,
903 BN_CTX *ctx);
904
905 /** Decodes an EC_KEY private key from an octet string
906 * \param key key to decode
907 * \param buf memory buffer with the encoded private key
908 * \param len length of the encoded key
909 * \return 1 on success and 0 if an error occurred
910 */
911
912 int EC_KEY_oct2priv(EC_KEY *key, unsigned char *buf, size_t len);
913
914 /** Encodes a EC_KEY private key to an octet string
915 * \param key key to encode
916 * \param buf memory buffer for the result. If NULL the function returns
917 * required buffer size.
918 * \param len length of the memory buffer
919 * \return the length of the encoded octet string or 0 if an error occurred
920 */
921
922 size_t EC_KEY_priv2oct(const EC_KEY *key, unsigned char *buf, size_t len);
923
924 /** Encodes an EC_KEY private key to an allocated octet string
925 * \param key key to encode
926 * \param pbuf returns pointer to allocated buffer
927 * \return the length of the encoded octet string or 0 if an error occurred
928 */
929
930 size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf);
931
932 /********************************************************************/
933 /* de- and encoding functions for SEC1 ECPrivateKey */
934 /********************************************************************/
935
936 /** Decodes a private key from a memory buffer.
937 * \param key a pointer to a EC_KEY object which should be used (or NULL)
938 * \param in pointer to memory with the DER encoded private key
939 * \param len length of the DER encoded private key
940 * \return the decoded private key or NULL if an error occurred.
941 */
942 EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
943
944 /** Encodes a private key object and stores the result in a buffer.
945 * \param key the EC_KEY object to encode
946 * \param out the buffer for the result (if NULL the function returns number
947 * of bytes needed).
948 * \return 1 on success and 0 if an error occurred.
949 */
950 int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
951
952 /********************************************************************/
953 /* de- and encoding functions for EC parameters */
954 /********************************************************************/
955
956 /** Decodes ec parameter from a memory buffer.
957 * \param key a pointer to a EC_KEY object which should be used (or NULL)
958 * \param in pointer to memory with the DER encoded ec parameters
959 * \param len length of the DER encoded ec parameters
960 * \return a EC_KEY object with the decoded parameters or NULL if an error
961 * occurred.
962 */
963 EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
964
965 /** Encodes ec parameter and stores the result in a buffer.
966 * \param key the EC_KEY object with ec parameters to encode
967 * \param out the buffer for the result (if NULL the function returns number
968 * of bytes needed).
969 * \return 1 on success and 0 if an error occurred.
970 */
971 int i2d_ECParameters(EC_KEY *key, unsigned char **out);
972
973 /********************************************************************/
974 /* de- and encoding functions for EC public key */
975 /* (octet string, not DER -- hence 'o2i' and 'i2o') */
976 /********************************************************************/
977
978 /** Decodes a ec public key from a octet string.
979 * \param key a pointer to a EC_KEY object which should be used
980 * \param in memory buffer with the encoded public key
981 * \param len length of the encoded public key
982 * \return EC_KEY object with decoded public key or NULL if an error
983 * occurred.
984 */
985 EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len);
986
987 /** Encodes a ec public key in an octet string.
988 * \param key the EC_KEY object with the public key
989 * \param out the buffer for the result (if NULL the function returns number
990 * of bytes needed).
991 * \return 1 on success and 0 if an error occurred
992 */
993 int i2o_ECPublicKey(EC_KEY *key, unsigned char **out);
994
995 /** Prints out the ec parameters on human readable form.
996 * \param bp BIO object to which the information is printed
997 * \param key EC_KEY object
998 * \return 1 on success and 0 if an error occurred
999 */
1000 int ECParameters_print(BIO *bp, const EC_KEY *key);
1001
1002 /** Prints out the contents of a EC_KEY object
1003 * \param bp BIO object to which the information is printed
1004 * \param key EC_KEY object
1005 * \param off line offset
1006 * \return 1 on success and 0 if an error occurred
1007 */
1008 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
1009
1010 # ifndef OPENSSL_NO_STDIO
1011 /** Prints out the ec parameters on human readable form.
1012 * \param fp file descriptor to which the information is printed
1013 * \param key EC_KEY object
1014 * \return 1 on success and 0 if an error occurred
1015 */
1016 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
1017
1018 /** Prints out the contents of a EC_KEY object
1019 * \param fp file descriptor to which the information is printed
1020 * \param key EC_KEY object
1021 * \param off line offset
1022 * \return 1 on success and 0 if an error occurred
1023 */
1024 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
1025
1026 # endif
1027
1028 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1029 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1030 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
1031 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
1032 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
1033 EC_KEY *EC_KEY_new_method(ENGINE *engine);
1034
1035 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
1036 const unsigned char *Z, size_t Zlen,
1037 const unsigned char *sinfo, size_t sinfolen,
1038 const EVP_MD *md);
1039
1040 int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
1041 const EC_KEY *ecdh,
1042 void *(*KDF) (const void *in, size_t inlen,
1043 void *out, size_t *outlen));
1044
1045 typedef struct ECDSA_SIG_st ECDSA_SIG;
1046
1047 /** Allocates and initialize a ECDSA_SIG structure
1048 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1049 */
1050 ECDSA_SIG *ECDSA_SIG_new(void);
1051
1052 /** frees a ECDSA_SIG structure
1053 * \param sig pointer to the ECDSA_SIG structure
1054 */
1055 void ECDSA_SIG_free(ECDSA_SIG *sig);
1056
1057 /** DER encode content of ECDSA_SIG object (note: this function modifies *pp
1058 * (*pp += length of the DER encoded signature)).
1059 * \param sig pointer to the ECDSA_SIG object
1060 * \param pp pointer to a unsigned char pointer for the output or NULL
1061 * \return the length of the DER encoded ECDSA_SIG object or 0
1062 */
1063 int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
1064
1065 /** Decodes a DER encoded ECDSA signature (note: this function changes *pp
1066 * (*pp += len)).
1067 * \param sig pointer to ECDSA_SIG pointer (may be NULL)
1068 * \param pp memory buffer with the DER encoded signature
1069 * \param len length of the buffer
1070 * \return pointer to the decoded ECDSA_SIG structure (or NULL)
1071 */
1072 ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
1073
1074 /** Accessor for r and s fields of ECDSA_SIG
1075 * \param sig pointer to ECDSA_SIG pointer
1076 * \param pr pointer to BIGNUM pointer for r (may be NULL)
1077 * \param ps pointer to BIGNUM pointer for s (may be NULL)
1078 */
1079 void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
1080
1081 /** Setter for r and s fields of ECDSA_SIG
1082 * \param sig pointer to ECDSA_SIG pointer
1083 * \param r pointer to BIGNUM for r (may be NULL)
1084 * \param s pointer to BIGNUM for s (may be NULL)
1085 */
1086 int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
1087
1088 /** Computes the ECDSA signature of the given hash value using
1089 * the supplied private key and returns the created signature.
1090 * \param dgst pointer to the hash value
1091 * \param dgst_len length of the hash value
1092 * \param eckey EC_KEY object containing a private EC key
1093 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1094 */
1095 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dgst_len,
1096 EC_KEY *eckey);
1097
1098 /** Computes ECDSA signature of a given hash value using the supplied
1099 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1100 * \param dgst pointer to the hash value to sign
1101 * \param dgstlen length of the hash value
1102 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1103 * \param rp BIGNUM with a pre-computed rp value (optional),
1104 * see ECDSA_sign_setup
1105 * \param eckey EC_KEY object containing a private EC key
1106 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1107 */
1108 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dgstlen,
1109 const BIGNUM *kinv, const BIGNUM *rp,
1110 EC_KEY *eckey);
1111
1112 /** Verifies that the supplied signature is a valid ECDSA
1113 * signature of the supplied hash value using the supplied public key.
1114 * \param dgst pointer to the hash value
1115 * \param dgst_len length of the hash value
1116 * \param sig ECDSA_SIG structure
1117 * \param eckey EC_KEY object containing a public EC key
1118 * \return 1 if the signature is valid, 0 if the signature is invalid
1119 * and -1 on error
1120 */
1121 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1122 const ECDSA_SIG *sig, EC_KEY *eckey);
1123
1124 /** Precompute parts of the signing operation
1125 * \param eckey EC_KEY object containing a private EC key
1126 * \param ctx BN_CTX object (optional)
1127 * \param kinv BIGNUM pointer for the inverse of k
1128 * \param rp BIGNUM pointer for x coordinate of k * generator
1129 * \return 1 on success and 0 otherwise
1130 */
1131 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
1132
1133 /** Computes ECDSA signature of a given hash value using the supplied
1134 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1135 * \param type this parameter is ignored
1136 * \param dgst pointer to the hash value to sign
1137 * \param dgstlen length of the hash value
1138 * \param sig memory for the DER encoded created signature
1139 * \param siglen pointer to the length of the returned signature
1140 * \param eckey EC_KEY object containing a private EC key
1141 * \return 1 on success and 0 otherwise
1142 */
1143 int ECDSA_sign(int type, const unsigned char *dgst, int dgstlen,
1144 unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
1145
1146 /** Computes ECDSA signature of a given hash value using the supplied
1147 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1148 * \param type this parameter is ignored
1149 * \param dgst pointer to the hash value to sign
1150 * \param dgstlen length of the hash value
1151 * \param sig buffer to hold the DER encoded signature
1152 * \param siglen pointer to the length of the returned signature
1153 * \param kinv BIGNUM with a pre-computed inverse k (optional)
1154 * \param rp BIGNUM with a pre-computed rp value (optional),
1155 * see ECDSA_sign_setup
1156 * \param eckey EC_KEY object containing a private EC key
1157 * \return 1 on success and 0 otherwise
1158 */
1159 int ECDSA_sign_ex(int type, const unsigned char *dgst, int dgstlen,
1160 unsigned char *sig, unsigned int *siglen,
1161 const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey);
1162
1163 /** Verifies that the given signature is valid ECDSA signature
1164 * of the supplied hash value using the specified public key.
1165 * \param type this parameter is ignored
1166 * \param dgst pointer to the hash value
1167 * \param dgstlen length of the hash value
1168 * \param sig pointer to the DER encoded signature
1169 * \param siglen length of the DER encoded signature
1170 * \param eckey EC_KEY object containing a public EC key
1171 * \return 1 if the signature is valid, 0 if the signature is invalid
1172 * and -1 on error
1173 */
1174 int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
1175 const unsigned char *sig, int siglen, EC_KEY *eckey);
1176
1177 /** Returns the maximum length of the DER encoded signature
1178 * \param eckey EC_KEY object
1179 * \return numbers of bytes required for the DER encoded signature
1180 */
1181 int ECDSA_size(const EC_KEY *eckey);
1182
1183 /********************************************************************/
1184 /* EC_KEY_METHOD constructors, destructors, writers and accessors */
1185 /********************************************************************/
1186
1187 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
1188 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1189 void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
1190 int (*init)(EC_KEY *key),
1191 void (*finish)(EC_KEY *key),
1192 int (*copy)(EC_KEY *dest, const EC_KEY *src),
1193 int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
1194 int (*set_private)(EC_KEY *key,
1195 const BIGNUM *priv_key),
1196 int (*set_public)(EC_KEY *key,
1197 const EC_POINT *pub_key));
1198
1199 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1200 int (*keygen)(EC_KEY *key));
1201
1202 void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
1203 int (*ckey)(unsigned char **psec,
1204 size_t *pseclen,
1205 const EC_POINT *pub_key,
1206 const EC_KEY *ecdh));
1207
1208 void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
1209 int (*sign)(int type, const unsigned char *dgst,
1210 int dlen, unsigned char *sig,
1211 unsigned int *siglen,
1212 const BIGNUM *kinv, const BIGNUM *r,
1213 EC_KEY *eckey),
1214 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1215 BIGNUM **kinvp, BIGNUM **rp),
1216 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
1217 int dgst_len,
1218 const BIGNUM *in_kinv,
1219 const BIGNUM *in_r,
1220 EC_KEY *eckey));
1221
1222 void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,
1223 int (*verify)(int type, const unsigned
1224 char *dgst, int dgst_len,
1225 const unsigned char *sigbuf,
1226 int sig_len, EC_KEY *eckey),
1227 int (*verify_sig)(const unsigned char *dgst,
1228 int dgst_len,
1229 const ECDSA_SIG *sig,
1230 EC_KEY *eckey));
1231
1232 void EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
1233 int (**pinit)(EC_KEY *key),
1234 void (**pfinish)(EC_KEY *key),
1235 int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
1236 int (**pset_group)(EC_KEY *key,
1237 const EC_GROUP *grp),
1238 int (**pset_private)(EC_KEY *key,
1239 const BIGNUM *priv_key),
1240 int (**pset_public)(EC_KEY *key,
1241 const EC_POINT *pub_key));
1242
1243 void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
1244 int (**pkeygen)(EC_KEY *key));
1245
1246 void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
1247 int (**pck)(unsigned char **psec,
1248 size_t *pseclen,
1249 const EC_POINT *pub_key,
1250 const EC_KEY *ecdh));
1251
1252 void EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
1253 int (**psign)(int type, const unsigned char *dgst,
1254 int dlen, unsigned char *sig,
1255 unsigned int *siglen,
1256 const BIGNUM *kinv, const BIGNUM *r,
1257 EC_KEY *eckey),
1258 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1259 BIGNUM **kinvp, BIGNUM **rp),
1260 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
1261 int dgst_len,
1262 const BIGNUM *in_kinv,
1263 const BIGNUM *in_r,
1264 EC_KEY *eckey));
1265
1266 void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
1267 int (**pverify)(int type, const unsigned
1268 char *dgst, int dgst_len,
1269 const unsigned char *sigbuf,
1270 int sig_len, EC_KEY *eckey),
1271 int (**pverify_sig)(const unsigned char *dgst,
1272 int dgst_len,
1273 const ECDSA_SIG *sig,
1274 EC_KEY *eckey));
1275
1276 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
1277
1278 # ifndef __cplusplus
1279 # if defined(__SUNPRO_C)
1280 # if __SUNPRO_C >= 0x520
1281 # pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
1282 # endif
1283 # endif
1284 # endif
1285
1286 # define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \
1287 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1288 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1289 EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL)
1290
1291 # define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \
1292 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1293 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1294 EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL)
1295
1296 # define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \
1297 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1298 EVP_PKEY_OP_DERIVE, \
1299 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL)
1300
1301 # define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \
1302 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1303 EVP_PKEY_OP_DERIVE, \
1304 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL)
1305
1306 # define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \
1307 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1308 EVP_PKEY_OP_DERIVE, \
1309 EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL)
1310
1311 # define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \
1312 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1313 EVP_PKEY_OP_DERIVE, \
1314 EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL)
1315
1316 # define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \
1317 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1318 EVP_PKEY_OP_DERIVE, \
1319 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)md)
1320
1321 # define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \
1322 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1323 EVP_PKEY_OP_DERIVE, \
1324 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)pmd)
1325
1326 # define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \
1327 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1328 EVP_PKEY_OP_DERIVE, \
1329 EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL)
1330
1331 # define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \
1332 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1333 EVP_PKEY_OP_DERIVE, \
1334 EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, (void *)plen)
1335
1336 # define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
1337 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1338 EVP_PKEY_OP_DERIVE, \
1339 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)p)
1340
1341 # define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
1342 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1343 EVP_PKEY_OP_DERIVE, \
1344 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)p)
1345
1346 # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1)
1347 # define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2)
1348 # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3)
1349 # define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4)
1350 # define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5)
1351 # define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6)
1352 # define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7)
1353 # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8)
1354 # define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9)
1355 # define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10)
1356 /* KDF types */
1357 # define EVP_PKEY_ECDH_KDF_NONE 1
1358 # define EVP_PKEY_ECDH_KDF_X9_62 2
1359
1360 /* BEGIN ERROR CODES */
1361 /*
1362 * The following lines are auto generated by the script mkerr.pl. Any changes
1363 * made after this point may be overwritten when the script is next run.
1364 */
1365
1366 void ERR_load_EC_strings(void);
1367
1368 /* Error codes for the EC functions. */
1369
1370 /* Function codes. */
1371 # define EC_F_BN_TO_FELEM 224
1372 # define EC_F_D2I_ECPARAMETERS 144
1373 # define EC_F_D2I_ECPKPARAMETERS 145
1374 # define EC_F_D2I_ECPRIVATEKEY 146
1375 # define EC_F_DO_EC_KEY_PRINT 221
1376 # define EC_F_ECDH_CMS_DECRYPT 238
1377 # define EC_F_ECDH_CMS_SET_SHARED_INFO 239
1378 # define EC_F_ECDH_COMPUTE_KEY 246
1379 # define EC_F_ECDH_SIMPLE_COMPUTE_KEY 257
1380 # define EC_F_ECDSA_DO_SIGN_EX 251
1381 # define EC_F_ECDSA_DO_VERIFY 252
1382 # define EC_F_ECDSA_SIGN_EX 254
1383 # define EC_F_ECDSA_SIGN_SETUP 248
1384 # define EC_F_ECDSA_VERIFY 253
1385 # define EC_F_ECKEY_PARAM2TYPE 223
1386 # define EC_F_ECKEY_PARAM_DECODE 212
1387 # define EC_F_ECKEY_PRIV_DECODE 213
1388 # define EC_F_ECKEY_PRIV_ENCODE 214
1389 # define EC_F_ECKEY_PUB_DECODE 215
1390 # define EC_F_ECKEY_PUB_ENCODE 216
1391 # define EC_F_ECKEY_TYPE2PARAM 220
1392 # define EC_F_ECPARAMETERS_PRINT 147
1393 # define EC_F_ECPARAMETERS_PRINT_FP 148
1394 # define EC_F_ECPKPARAMETERS_PRINT 149
1395 # define EC_F_ECPKPARAMETERS_PRINT_FP 150
1396 # define EC_F_ECP_NISTZ256_GET_AFFINE 240
1397 # define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE 243
1398 # define EC_F_ECP_NISTZ256_POINTS_MUL 241
1399 # define EC_F_ECP_NISTZ256_PRE_COMP_NEW 244
1400 # define EC_F_ECP_NISTZ256_WINDOWED_MUL 242
1401 # define EC_F_EC_ASN1_GROUP2CURVE 153
1402 # define EC_F_EC_ASN1_GROUP2FIELDID 154
1403 # define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY 208
1404 # define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT 159
1405 # define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE 195
1406 # define EC_F_EC_GF2M_SIMPLE_OCT2POINT 160
1407 # define EC_F_EC_GF2M_SIMPLE_POINT2OCT 161
1408 # define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
1409 # define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
1410 # define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES 164
1411 # define EC_F_EC_GFP_MONT_FIELD_DECODE 133
1412 # define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
1413 # define EC_F_EC_GFP_MONT_FIELD_MUL 131
1414 # define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE 209
1415 # define EC_F_EC_GFP_MONT_FIELD_SQR 132
1416 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE 189
1417 # define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE 225
1418 # define EC_F_EC_GFP_NISTP224_POINTS_MUL 228
1419 # define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
1420 # define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE 230
1421 # define EC_F_EC_GFP_NISTP256_POINTS_MUL 231
1422 # define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
1423 # define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE 233
1424 # define EC_F_EC_GFP_NISTP521_POINTS_MUL 234
1425 # define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
1426 # define EC_F_EC_GFP_NIST_FIELD_MUL 200
1427 # define EC_F_EC_GFP_NIST_FIELD_SQR 201
1428 # define EC_F_EC_GFP_NIST_GROUP_SET_CURVE 202
1429 # define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 165
1430 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE 166
1431 # define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
1432 # define EC_F_EC_GFP_SIMPLE_OCT2POINT 103
1433 # define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
1434 # define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
1435 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES 167
1436 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES 168
1437 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES 169
1438 # define EC_F_EC_GROUP_CHECK 170
1439 # define EC_F_EC_GROUP_CHECK_DISCRIMINANT 171
1440 # define EC_F_EC_GROUP_COPY 106
1441 # define EC_F_EC_GROUP_GET_CURVE_GF2M 172
1442 # define EC_F_EC_GROUP_GET_CURVE_GFP 130
1443 # define EC_F_EC_GROUP_GET_DEGREE 173
1444 # define EC_F_EC_GROUP_GET_ECPARAMETERS 261
1445 # define EC_F_EC_GROUP_GET_ECPKPARAMETERS 262
1446 # define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS 193
1447 # define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS 194
1448 # define EC_F_EC_GROUP_NEW 108
1449 # define EC_F_EC_GROUP_NEW_BY_CURVE_NAME 174
1450 # define EC_F_EC_GROUP_NEW_FROM_DATA 175
1451 # define EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS 263
1452 # define EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS 264
1453 # define EC_F_EC_GROUP_SET_CURVE_GF2M 176
1454 # define EC_F_EC_GROUP_SET_CURVE_GFP 109
1455 # define EC_F_EC_GROUP_SET_GENERATOR 111
1456 # define EC_F_EC_KEY_CHECK_KEY 177
1457 # define EC_F_EC_KEY_COPY 178
1458 # define EC_F_EC_KEY_GENERATE_KEY 179
1459 # define EC_F_EC_KEY_NEW 182
1460 # define EC_F_EC_KEY_NEW_METHOD 245
1461 # define EC_F_EC_KEY_OCT2PRIV 255
1462 # define EC_F_EC_KEY_PRINT 180
1463 # define EC_F_EC_KEY_PRINT_FP 181
1464 # define EC_F_EC_KEY_PRIV2OCT 256
1465 # define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES 229
1466 # define EC_F_EC_KEY_SIMPLE_CHECK_KEY 258
1467 # define EC_F_EC_KEY_SIMPLE_OCT2PRIV 259
1468 # define EC_F_EC_KEY_SIMPLE_PRIV2OCT 260
1469 # define EC_F_EC_POINTS_MAKE_AFFINE 136
1470 # define EC_F_EC_POINT_ADD 112
1471 # define EC_F_EC_POINT_CMP 113
1472 # define EC_F_EC_POINT_COPY 114
1473 # define EC_F_EC_POINT_DBL 115
1474 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M 183
1475 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
1476 # define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
1477 # define EC_F_EC_POINT_INVERT 210
1478 # define EC_F_EC_POINT_IS_AT_INFINITY 118
1479 # define EC_F_EC_POINT_IS_ON_CURVE 119
1480 # define EC_F_EC_POINT_MAKE_AFFINE 120
1481 # define EC_F_EC_POINT_NEW 121
1482 # define EC_F_EC_POINT_OCT2POINT 122
1483 # define EC_F_EC_POINT_POINT2OCT 123
1484 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M 185
1485 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
1486 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M 186
1487 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
1488 # define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
1489 # define EC_F_EC_POINT_SET_TO_INFINITY 127
1490 # define EC_F_EC_PRE_COMP_NEW 196
1491 # define EC_F_EC_WNAF_MUL 187
1492 # define EC_F_EC_WNAF_PRECOMPUTE_MULT 188
1493 # define EC_F_I2D_ECPARAMETERS 190
1494 # define EC_F_I2D_ECPKPARAMETERS 191
1495 # define EC_F_I2D_ECPRIVATEKEY 192
1496 # define EC_F_I2O_ECPUBLICKEY 151
1497 # define EC_F_NISTP224_PRE_COMP_NEW 227
1498 # define EC_F_NISTP256_PRE_COMP_NEW 236
1499 # define EC_F_NISTP521_PRE_COMP_NEW 237
1500 # define EC_F_O2I_ECPUBLICKEY 152
1501 # define EC_F_OLD_EC_PRIV_DECODE 222
1502 # define EC_F_OSSL_ECDH_COMPUTE_KEY 247
1503 # define EC_F_OSSL_ECDSA_SIGN_SIG 249
1504 # define EC_F_OSSL_ECDSA_VERIFY_SIG 250
1505 # define EC_F_PKEY_EC_CTRL 197
1506 # define EC_F_PKEY_EC_CTRL_STR 198
1507 # define EC_F_PKEY_EC_DERIVE 217
1508 # define EC_F_PKEY_EC_KEYGEN 199
1509 # define EC_F_PKEY_EC_PARAMGEN 219
1510 # define EC_F_PKEY_EC_SIGN 218
1511
1512 /* Reason codes. */
1513 # define EC_R_ASN1_ERROR 115
1514 # define EC_R_BAD_SIGNATURE 156
1515 # define EC_R_BIGNUM_OUT_OF_RANGE 144
1516 # define EC_R_BUFFER_TOO_SMALL 100
1517 # define EC_R_COORDINATES_OUT_OF_RANGE 146
1518 # define EC_R_CURVE_DOES_NOT_SUPPORT_ECDH 160
1519 # define EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING 159
1520 # define EC_R_D2I_ECPKPARAMETERS_FAILURE 117
1521 # define EC_R_DECODE_ERROR 142
1522 # define EC_R_DISCRIMINANT_IS_ZERO 118
1523 # define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 119
1524 # define EC_R_FIELD_TOO_LARGE 143
1525 # define EC_R_GF2M_NOT_SUPPORTED 147
1526 # define EC_R_GROUP2PKPARAMETERS_FAILURE 120
1527 # define EC_R_I2D_ECPKPARAMETERS_FAILURE 121
1528 # define EC_R_INCOMPATIBLE_OBJECTS 101
1529 # define EC_R_INVALID_ARGUMENT 112
1530 # define EC_R_INVALID_COMPRESSED_POINT 110
1531 # define EC_R_INVALID_COMPRESSION_BIT 109
1532 # define EC_R_INVALID_CURVE 141
1533 # define EC_R_INVALID_DIGEST 151
1534 # define EC_R_INVALID_DIGEST_TYPE 138
1535 # define EC_R_INVALID_ENCODING 102
1536 # define EC_R_INVALID_FIELD 103
1537 # define EC_R_INVALID_FORM 104
1538 # define EC_R_INVALID_GROUP_ORDER 122
1539 # define EC_R_INVALID_OUTPUT_LENGTH 161
1540 # define EC_R_INVALID_PENTANOMIAL_BASIS 132
1541 # define EC_R_INVALID_PRIVATE_KEY 123
1542 # define EC_R_INVALID_TRINOMIAL_BASIS 137
1543 # define EC_R_KDF_PARAMETER_ERROR 148
1544 # define EC_R_KEYS_NOT_SET 140
1545 # define EC_R_MISSING_PARAMETERS 124
1546 # define EC_R_MISSING_PRIVATE_KEY 125
1547 # define EC_R_NEED_NEW_SETUP_VALUES 157
1548 # define EC_R_NOT_A_NIST_PRIME 135
1549 # define EC_R_NOT_IMPLEMENTED 126
1550 # define EC_R_NOT_INITIALIZED 111
1551 # define EC_R_NO_PARAMETERS_SET 139
1552 # define EC_R_NO_PRIVATE_VALUE 154
1553 # define EC_R_OPERATION_NOT_SUPPORTED 152
1554 # define EC_R_PASSED_NULL_PARAMETER 134
1555 # define EC_R_PEER_KEY_ERROR 149
1556 # define EC_R_PKPARAMETERS2GROUP_FAILURE 127
1557 # define EC_R_POINT_ARITHMETIC_FAILURE 155
1558 # define EC_R_POINT_AT_INFINITY 106
1559 # define EC_R_POINT_IS_NOT_ON_CURVE 107
1560 # define EC_R_RANDOM_NUMBER_GENERATION_FAILED 158
1561 # define EC_R_SHARED_INFO_ERROR 150
1562 # define EC_R_SLOT_FULL 108
1563 # define EC_R_UNDEFINED_GENERATOR 113
1564 # define EC_R_UNDEFINED_ORDER 128
1565 # define EC_R_UNKNOWN_GROUP 129
1566 # define EC_R_UNKNOWN_ORDER 114
1567 # define EC_R_UNSUPPORTED_FIELD 131
1568 # define EC_R_WRONG_CURVE_PARAMETERS 145
1569 # define EC_R_WRONG_ORDER 130
1570
1571 # ifdef __cplusplus
1572 }
1573 # endif
1574 # endif
1575 #endif
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