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[thirdparty/openssl.git] / include / openssl / ec.h
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35b73a1f 1/*
21dcbebc 2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
6cc5e19d 3 *
21dcbebc
RS		 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
6cc5e19d 8 */
21dcbebc 9
7793f30e
BM		 10/* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 *
0f113f3e 13 * Portions of the attached software ("Contribution") are developed by
7793f30e
BM		 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 *
0f113f3e 19 * The elliptic curve binary polynomial software is originally written by
7793f30e
BM		 20 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
21 *
22 */
6cc5e19d 23
6cc5e19d 24#ifndef HEADER_EC_H
0f113f3e 25# define HEADER_EC_H
6cc5e19d 26
0f113f3e 27# include <openssl/opensslconf.h>
87c9c659 28
3c27208f 29# ifndef OPENSSL_NO_EC
0f113f3e
MC		 30# include <openssl/asn1.h>
31# include <openssl/symhacks.h>
98186eb4 32# if OPENSSL_API_COMPAT < 0x10100000L
0f113f3e
MC		 33# include <openssl/bn.h>
34# endif
0f113f3e 35# ifdef __cplusplus
65e81670 36extern "C" {
7f24b1c3 37# endif
6cc5e19d 38
0f113f3e
MC		 39# ifndef OPENSSL_ECC_MAX_FIELD_BITS
40# define OPENSSL_ECC_MAX_FIELD_BITS 661
41# endif
5e3225cc 42
ba12070f
NL		 43/** Enum for the point conversion form as defined in X9.62 (ECDSA)
44 * for the encoding of a elliptic curve point (x,y) */
3a12ce01 45typedef enum {
0f113f3e 46 /** the point is encoded as z||x, where the octet z specifies
ba12070f 47 * which solution of the quadratic equation y is */
0f113f3e 48 POINT_CONVERSION_COMPRESSED = 2,
91d2728b 49 /** the point is encoded as z||x||y, where z is the octet 0x04 */
0f113f3e
MC		 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
3a12ce01
BM		 54} point_conversion_form_t;
55
3a12ce01 56typedef struct ec_method_st EC_METHOD;
60b350a3 57typedef struct ec_group_st EC_GROUP;
3a12ce01 58typedef struct ec_point_st EC_POINT;
60b350a3
RS		 59typedef struct ecpk_parameters_st ECPKPARAMETERS;
60typedef struct ec_parameters_st ECPARAMETERS;
3a12ce01 61
ba12070f 62/********************************************************************/
0f113f3e 63/* EC_METHODs for curves over GF(p) */
ba12070f
NL		 64/********************************************************************/
65
66/** Returns the basic GFp ec methods which provides the basis for the
0f113f3e 67 * optimized methods.
ba12070f 68 * \return EC_METHOD object
3a12ce01 69 */
3a12ce01 70const EC_METHOD *EC_GFp_simple_method(void);
ba12070f
NL		 71
72/** Returns GFp methods using montgomery multiplication.
73 * \return EC_METHOD object
74 */
3a12ce01 75const EC_METHOD *EC_GFp_mont_method(void);
ba12070f
NL		 76
77/** Returns GFp methods using optimized methods for NIST recommended curves
78 * \return EC_METHOD object
79 */
5c6bf031 80const EC_METHOD *EC_GFp_nist_method(void);
3a12ce01 81
0f113f3e 82# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
04daec86
BM		 83/** Returns 64-bit optimized methods for nistp224
84 * \return EC_METHOD object
85 */
86const EC_METHOD *EC_GFp_nistp224_method(void);
3e00b4c9
BM		 87
88/** Returns 64-bit optimized methods for nistp256
89 * \return EC_METHOD object
90 */
91const EC_METHOD *EC_GFp_nistp256_method(void);
92
93/** Returns 64-bit optimized methods for nistp521
94 * \return EC_METHOD object
95 */
96const EC_METHOD *EC_GFp_nistp521_method(void);
0f113f3e 97# endif
ba12070f 98
0f113f3e
MC		 99# ifndef OPENSSL_NO_EC2M
100/********************************************************************/
ba12070f
NL		 101/* EC_METHOD for curves over GF(2^m) */
102/********************************************************************/
103
0f113f3e 104/** Returns the basic GF2m ec method
ba12070f 105 * \return EC_METHOD object
7793f30e
BM		 106 */
107const EC_METHOD *EC_GF2m_simple_method(void);
108
0f113f3e 109# endif
3a12ce01 110
ba12070f
NL		 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 */
119EC_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 */
124void 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 */
129void 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 */
136int 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 */
143EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
144
145/** Returns the EC_METHOD of the EC_GROUP object.
0f113f3e 146 * \param group EC_GROUP object
ba12070f
NL		 147 * \return EC_METHOD used in this EC_GROUP object.
148 */
149const 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 */
155int EC_METHOD_get_field_type(const EC_METHOD *meth);
156
157/** Sets the generator and it's order/cofactor of a EC_GROUP object.
0f113f3e 158 * \param group EC_GROUP object
ba12070f
NL		 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.
478b50cf 163 * \return 1 on success and 0 if an error occurred
ba12070f 164 */
0f113f3e
MC		 165int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
166 const BIGNUM *order, const BIGNUM *cofactor);
ba12070f
NL		 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 */
172const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
173
f54be179
AP		 174/** Returns the montgomery data for order(Generator)
175 * \param group EC_GROUP object
14f46560 176 * \return the currently used montgomery data (possibly NULL).
f54be179
AP		 177*/
178BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
179
ba12070f
NL		 180/** Gets the order of a EC_GROUP
181 * \param group EC_GROUP object
182 * \param order BIGNUM to which the order is copied
a773b52a 183 * \param ctx unused
478b50cf 184 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 185 */
186int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
48fe4d62 187
be2e334f
DSH		 188/** Gets the order of an EC_GROUP
189 * \param group EC_GROUP object
190 * \return the group order
191 */
be2e334f
DSH		 192const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
193
8483a003 194/** Gets the number of bits of the order of an EC_GROUP
be2e334f
DSH		 195 * \param group EC_GROUP object
196 * \return number of bits of group order.
197 */
be2e334f
DSH		 198int EC_GROUP_order_bits(const EC_GROUP *group);
199
ba12070f
NL		 200/** Gets the cofactor of a EC_GROUP
201 * \param group EC_GROUP object
202 * \param cofactor BIGNUM to which the cofactor is copied
a773b52a 203 * \param ctx unused
478b50cf 204 * \return 1 on success and 0 if an error occurred
ba12070f 205 */
0f113f3e
MC		 206int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
207 BN_CTX *ctx);
b6db386f 208
be2e334f
DSH		 209/** Gets the cofactor of an EC_GROUP
210 * \param group EC_GROUP object
211 * \return the group cofactor
212 */
be2e334f
DSH		 213const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group);
214
ba12070f
NL		 215/** Sets the name of a EC_GROUP object
216 * \param group EC_GROUP object
217 * \param nid NID of the curve name OID
218 */
219void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
b6db386f 220
ba12070f
NL		 221/** Returns the curve name of a EC_GROUP object
222 * \param group EC_GROUP object
223 * \return NID of the curve name OID or 0 if not set.
224 */
225int EC_GROUP_get_curve_name(const EC_GROUP *group);
945e15a2 226
ba12070f
NL		 227void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
228int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
5f3d6f70 229
0f113f3e
MC		 230void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
231 point_conversion_form_t form);
5f3d6f70
BM		 232point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
233
9945b460 234unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
5f3d6f70
BM		 235size_t EC_GROUP_get_seed_len(const EC_GROUP *);
236size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
48fe4d62 237
ba12070f
NL		 238/** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
239 * \param group EC_GROUP object
240 * \param p BIGNUM with the prime number
241 * \param a BIGNUM with parameter a of the equation
242 * \param b BIGNUM with parameter b of the equation
243 * \param ctx BN_CTX object (optional)
478b50cf 244 * \return 1 on success and 0 if an error occurred
ba12070f 245 */
0f113f3e
MC		 246int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
247 const BIGNUM *b, BN_CTX *ctx);
ba12070f
NL		 248
249/** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
250 * \param group EC_GROUP object
251 * \param p BIGNUM for the prime number
252 * \param a BIGNUM for parameter a of the equation
253 * \param b BIGNUM for parameter b of the equation
254 * \param ctx BN_CTX object (optional)
478b50cf 255 * \return 1 on success and 0 if an error occurred
ba12070f 256 */
0f113f3e
MC		 257int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
258 BIGNUM *b, BN_CTX *ctx);
ba12070f 259
0f113f3e 260# ifndef OPENSSL_NO_EC2M
ba12070f
NL		 261/** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
262 * \param group EC_GROUP object
263 * \param p BIGNUM with the polynomial defining the underlying field
264 * \param a BIGNUM with parameter a of the equation
265 * \param b BIGNUM with parameter b of the equation
266 * \param ctx BN_CTX object (optional)
478b50cf 267 * \return 1 on success and 0 if an error occurred
ba12070f 268 */
0f113f3e
MC		 269int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
270 const BIGNUM *b, BN_CTX *ctx);
ba12070f
NL		 271
272/** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
273 * \param group EC_GROUP object
274 * \param p BIGNUM for the polynomial defining the underlying field
275 * \param a BIGNUM for parameter a of the equation
276 * \param b BIGNUM for parameter b of the equation
277 * \param ctx BN_CTX object (optional)
478b50cf 278 * \return 1 on success and 0 if an error occurred
ba12070f 279 */
0f113f3e
MC		 280int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
281 BIGNUM *b, BN_CTX *ctx);
282# endif
283/** Returns the number of bits needed to represent a field element
ba12070f
NL		 284 * \param group EC_GROUP object
285 * \return number of bits needed to represent a field element
286 */
287int EC_GROUP_get_degree(const EC_GROUP *group);
3a12ce01 288
ba12070f
NL		 289/** Checks whether the parameter in the EC_GROUP define a valid ec group
290 * \param group EC_GROUP object
291 * \param ctx BN_CTX object (optional)
292 * \return 1 if group is a valid ec group and 0 otherwise
293 */
af28dd6c 294int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
945e15a2 295
ba12070f
NL		 296/** Checks whether the discriminant of the elliptic curve is zero or not
297 * \param group EC_GROUP object
298 * \param ctx BN_CTX object (optional)
299 * \return 1 if the discriminant is not zero and 0 otherwise
300 */
301int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
302
303/** Compares two EC_GROUP objects
304 * \param a first EC_GROUP object
305 * \param b second EC_GROUP object
306 * \param ctx BN_CTX object (optional)
14f46560 307 * \return 0 if the groups are equal, 1 if not, or -1 on error
ba12070f
NL		 308 */
309int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
ada0e717 310
0f113f3e
MC		 311/*
312 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
313 * choosing an appropriate EC_METHOD
314 */
945e15a2 315
ba12070f
NL		 316/** Creates a new EC_GROUP object with the specified parameters defined
317 * over GFp (defined by the equation y^2 = x^3 + a*x + b)
318 * \param p BIGNUM with the prime number
319 * \param a BIGNUM with the parameter a of the equation
320 * \param b BIGNUM with the parameter b of the equation
321 * \param ctx BN_CTX object (optional)
322 * \return newly created EC_GROUP object with the specified parameters
323 */
0f113f3e
MC		 324EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
325 const BIGNUM *b, BN_CTX *ctx);
326# ifndef OPENSSL_NO_EC2M
ba12070f
NL		 327/** Creates a new EC_GROUP object with the specified parameters defined
328 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
329 * \param p BIGNUM with the polynomial defining the underlying field
330 * \param a BIGNUM with the parameter a of the equation
331 * \param b BIGNUM with the parameter b of the equation
332 * \param ctx BN_CTX object (optional)
333 * \return newly created EC_GROUP object with the specified parameters
334 */
0f113f3e
MC		 335EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
336 const BIGNUM *b, BN_CTX *ctx);
337# endif
60b350a3 338
ba12070f
NL		 339/** Creates a EC_GROUP object with a curve specified by a NID
340 * \param nid NID of the OID of the curve name
341 * \return newly created EC_GROUP object with specified curve or NULL
342 * if an error occurred
343 */
8b15c740 344EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
ba12070f 345
60b350a3
RS		 346/** Creates a new EC_GROUP object from an ECPARAMETERS object
347 * \param params pointer to the ECPARAMETERS object
348 * \return newly created EC_GROUP object with specified curve or NULL
349 * if an error occurred
350 */
351EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
352
353/** Creates an ECPARAMETERS object for the the given EC_GROUP object.
354 * \param group pointer to the EC_GROUP object
355 * \param params pointer to an existing ECPARAMETERS object or NULL
356 * \return pointer to the new ECPARAMETERS object or NULL
357 * if an error occurred.
358 */
359ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
360 ECPARAMETERS *params);
361
362/** Creates a new EC_GROUP object from an ECPKPARAMETERS object
363 * \param params pointer to an existing ECPKPARAMETERS object, or NULL
364 * \return newly created EC_GROUP object with specified curve, or NULL
365 * if an error occurred
366 */
367EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
368
369/** Creates an ECPKPARAMETERS object for the the given EC_GROUP object.
370 * \param group pointer to the EC_GROUP object
371 * \param params pointer to an existing ECPKPARAMETERS object or NULL
372 * \return pointer to the new ECPKPARAMETERS object or NULL
373 * if an error occurred.
374 */
375ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
376 ECPKPARAMETERS *params);
377
ba12070f
NL		 378/********************************************************************/
379/* handling of internal curves */
380/********************************************************************/
381
0f113f3e
MC		 382typedef struct {
383 int nid;
384 const char *comment;
385} EC_builtin_curve;
ba12070f 386
0f113f3e
MC		 387/*
388 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
8483a003 389 * available curves or zero if a error occurred. In case r is not zero,
0f113f3e
MC		 390 * nitems EC_builtin_curve structures are filled with the data of the first
391 * nitems internal groups
392 */
65b1d31d 393size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
7eb18f12 394
64095ce9
DSH		 395const char *EC_curve_nid2nist(int nid);
396int EC_curve_nist2nid(const char *name);
7e31164a 397
ba12070f
NL		 398/********************************************************************/
399/* EC_POINT functions */
400/********************************************************************/
401
402/** Creates a new EC_POINT object for the specified EC_GROUP
403 * \param group EC_GROUP the underlying EC_GROUP object
404 * \return newly created EC_POINT object or NULL if an error occurred
405 */
406EC_POINT *EC_POINT_new(const EC_GROUP *group);
407
408/** Frees a EC_POINT object
409 * \param point EC_POINT object to be freed
410 */
411void EC_POINT_free(EC_POINT *point);
412
413/** Clears and frees a EC_POINT object
414 * \param point EC_POINT object to be cleared and freed
415 */
416void EC_POINT_clear_free(EC_POINT *point);
417
418/** Copies EC_POINT object
419 * \param dst destination EC_POINT object
420 * \param src source EC_POINT object
478b50cf 421 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 422 */
423int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
945e15a2 424
ba12070f
NL		 425/** Creates a new EC_POINT object and copies the content of the supplied
426 * EC_POINT
427 * \param src source EC_POINT object
428 * \param group underlying the EC_GROUP object
0f113f3e 429 * \return newly created EC_POINT object or NULL if an error occurred
ba12070f
NL		 430 */
431EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
0f113f3e
MC		 432
433/** Returns the EC_METHOD used in EC_POINT object
ba12070f
NL		 434 * \param point EC_POINT object
435 * \return the EC_METHOD used
436 */
437const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
438
439/** Sets a point to infinity (neutral element)
440 * \param group underlying EC_GROUP object
441 * \param point EC_POINT to set to infinity
478b50cf 442 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 443 */
444int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
445
446/** Sets the jacobian projective coordinates of a EC_POINT over GFp
447 * \param group underlying EC_GROUP object
448 * \param p EC_POINT object
449 * \param x BIGNUM with the x-coordinate
450 * \param y BIGNUM with the y-coordinate
451 * \param z BIGNUM with the z-coordinate
452 * \param ctx BN_CTX object (optional)
478b50cf 453 * \return 1 on success and 0 if an error occurred
ba12070f 454 */
0f113f3e
MC		 455int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
456 EC_POINT *p, const BIGNUM *x,
457 const BIGNUM *y, const BIGNUM *z,
458 BN_CTX *ctx);
ba12070f
NL		 459
460/** Gets the jacobian projective coordinates of a EC_POINT over GFp
461 * \param group underlying EC_GROUP object
462 * \param p EC_POINT object
463 * \param x BIGNUM for the x-coordinate
464 * \param y BIGNUM for the y-coordinate
465 * \param z BIGNUM for the z-coordinate
466 * \param ctx BN_CTX object (optional)
478b50cf 467 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 468 */
469int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
0f113f3e
MC		 470 const EC_POINT *p, BIGNUM *x,
471 BIGNUM *y, BIGNUM *z,
472 BN_CTX *ctx);
ba12070f
NL		 473
474/** Sets the affine coordinates of a EC_POINT over GFp
475 * \param group underlying EC_GROUP object
476 * \param p EC_POINT object
477 * \param x BIGNUM with the x-coordinate
478 * \param y BIGNUM with the y-coordinate
479 * \param ctx BN_CTX object (optional)
478b50cf 480 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 481 */
482int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
0f113f3e
MC		 483 const BIGNUM *x, const BIGNUM *y,
484 BN_CTX *ctx);
ba12070f
NL		 485
486/** Gets the affine coordinates of a EC_POINT over GFp
487 * \param group underlying EC_GROUP object
488 * \param p EC_POINT object
489 * \param x BIGNUM for the x-coordinate
490 * \param y BIGNUM for the y-coordinate
491 * \param ctx BN_CTX object (optional)
478b50cf 492 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 493 */
494int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
0f113f3e
MC		 495 const EC_POINT *p, BIGNUM *x,
496 BIGNUM *y, BN_CTX *ctx);
ba12070f
NL		 497
498/** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
499 * \param group underlying EC_GROUP object
500 * \param p EC_POINT object
501 * \param x BIGNUM with x-coordinate
502 * \param y_bit integer with the y-Bit (either 0 or 1)
503 * \param ctx BN_CTX object (optional)
478b50cf 504 * \return 1 on success and 0 if an error occurred
ba12070f 505 */
0f113f3e
MC		 506int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
507 EC_POINT *p, const BIGNUM *x,
508 int y_bit, BN_CTX *ctx);
509# ifndef OPENSSL_NO_EC2M
ba12070f
NL		 510/** Sets the affine coordinates of a EC_POINT over GF2m
511 * \param group underlying EC_GROUP object
512 * \param p EC_POINT object
513 * \param x BIGNUM with the x-coordinate
514 * \param y BIGNUM with the y-coordinate
515 * \param ctx BN_CTX object (optional)
478b50cf 516 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 517 */
518int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
0f113f3e
MC		 519 const BIGNUM *x, const BIGNUM *y,
520 BN_CTX *ctx);
ba12070f
NL		 521
522/** Gets the affine coordinates of a EC_POINT over GF2m
523 * \param group underlying EC_GROUP object
524 * \param p EC_POINT object
525 * \param x BIGNUM for the x-coordinate
526 * \param y BIGNUM for the y-coordinate
527 * \param ctx BN_CTX object (optional)
478b50cf 528 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 529 */
530int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
0f113f3e
MC		 531 const EC_POINT *p, BIGNUM *x,
532 BIGNUM *y, BN_CTX *ctx);
ba12070f
NL		 533
534/** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
535 * \param group underlying EC_GROUP object
536 * \param p EC_POINT object
537 * \param x BIGNUM with x-coordinate
538 * \param y_bit integer with the y-Bit (either 0 or 1)
539 * \param ctx BN_CTX object (optional)
478b50cf 540 * \return 1 on success and 0 if an error occurred
ba12070f 541 */
0f113f3e
MC		 542int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
543 EC_POINT *p, const BIGNUM *x,
544 int y_bit, BN_CTX *ctx);
545# endif
ba12070f
NL		 546/** Encodes a EC_POINT object to a octet string
547 * \param group underlying EC_GROUP object
548 * \param p EC_POINT object
549 * \param form point conversion form
550 * \param buf memory buffer for the result. If NULL the function returns
551 * required buffer size.
552 * \param len length of the memory buffer
553 * \param ctx BN_CTX object (optional)
554 * \return the length of the encoded octet string or 0 if an error occurred
555 */
556size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
0f113f3e
MC		 557 point_conversion_form_t form,
558 unsigned char *buf, size_t len, BN_CTX *ctx);
ba12070f
NL		 559
560/** Decodes a EC_POINT from a octet string
561 * \param group underlying EC_GROUP object
562 * \param p EC_POINT object
563 * \param buf memory buffer with the encoded ec point
564 * \param len length of the encoded ec point
565 * \param ctx BN_CTX object (optional)
478b50cf 566 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 567 */
568int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
0f113f3e 569 const unsigned char *buf, size_t len, BN_CTX *ctx);
7d7db13e 570
981bd8a2
DSH		 571/** Encodes an EC_POINT object to an allocated octet string
572 * \param group underlying EC_GROUP object
573 * \param point EC_POINT object
574 * \param form point conversion form
575 * \param pbuf returns pointer to allocated buffer
981bd8a2
DSH		 576 * \param ctx BN_CTX object (optional)
577 * \return the length of the encoded octet string or 0 if an error occurred
578 */
981bd8a2
DSH		 579size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
580 point_conversion_form_t form,
581 unsigned char **pbuf, BN_CTX *ctx);
582
6cbe6382
BM		 583/* other interfaces to point2oct/oct2point: */
584BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
0f113f3e 585 point_conversion_form_t form, BIGNUM *, BN_CTX *);
6cbe6382 586EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
0f113f3e 587 EC_POINT *, BN_CTX *);
6cbe6382 588char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
0f113f3e 589 point_conversion_form_t form, BN_CTX *);
6cbe6382 590EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
0f113f3e 591 EC_POINT *, BN_CTX *);
3a12ce01 592
ba12070f
NL		 593/********************************************************************/
594/* functions for doing EC_POINT arithmetic */
595/********************************************************************/
596
0f113f3e 597/** Computes the sum of two EC_POINT
ba12070f
NL		 598 * \param group underlying EC_GROUP object
599 * \param r EC_POINT object for the result (r = a + b)
600 * \param a EC_POINT object with the first summand
601 * \param b EC_POINT object with the second summand
602 * \param ctx BN_CTX object (optional)
478b50cf 603 * \return 1 on success and 0 if an error occurred
ba12070f 604 */
0f113f3e
MC		 605int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
606 const EC_POINT *b, BN_CTX *ctx);
ba12070f
NL		 607
608/** Computes the double of a EC_POINT
609 * \param group underlying EC_GROUP object
610 * \param r EC_POINT object for the result (r = 2 * a)
0f113f3e 611 * \param a EC_POINT object
ba12070f 612 * \param ctx BN_CTX object (optional)
478b50cf 613 * \return 1 on success and 0 if an error occurred
ba12070f 614 */
0f113f3e
MC		 615int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
616 BN_CTX *ctx);
ba12070f
NL		 617
618/** Computes the inverse of a EC_POINT
619 * \param group underlying EC_GROUP object
620 * \param a EC_POINT object to be inverted (it's used for the result as well)
621 * \param ctx BN_CTX object (optional)
478b50cf 622 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 623 */
624int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
625
626/** Checks whether the point is the neutral element of the group
627 * \param group the underlying EC_GROUP object
628 * \param p EC_POINT object
629 * \return 1 if the point is the neutral element and 0 otherwise
630 */
631int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
632
0f113f3e 633/** Checks whether the point is on the curve
ba12070f
NL		 634 * \param group underlying EC_GROUP object
635 * \param point EC_POINT object to check
636 * \param ctx BN_CTX object (optional)
14f46560 637 * \return 1 if the point is on the curve, 0 if not, or -1 on error
ba12070f 638 */
0f113f3e
MC		 639int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
640 BN_CTX *ctx);
ba12070f 641
0f113f3e 642/** Compares two EC_POINTs
ba12070f
NL		 643 * \param group underlying EC_GROUP object
644 * \param a first EC_POINT object
645 * \param b second EC_POINT object
646 * \param ctx BN_CTX object (optional)
14f46560 647 * \return 1 if the points are not equal, 0 if they are, or -1 on error
ba12070f 648 */
0f113f3e
MC		 649int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
650 BN_CTX *ctx);
fb171e53 651
9945b460 652int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
0f113f3e
MC		 653int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
654 EC_POINT *points[], BN_CTX *ctx);
fb171e53 655
14f46560 656/** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i]
ba12070f
NL		 657 * \param group underlying EC_GROUP object
658 * \param r EC_POINT object for the result
659 * \param n BIGNUM with the multiplier for the group generator (optional)
8483a003 660 * \param num number further summands
ba12070f
NL		 661 * \param p array of size num of EC_POINT objects
662 * \param m array of size num of BIGNUM objects
663 * \param ctx BN_CTX object (optional)
478b50cf 664 * \return 1 on success and 0 if an error occurred
ba12070f 665 */
0f113f3e
MC		 666int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
667 size_t num, const EC_POINT *p[], const BIGNUM *m[],
668 BN_CTX *ctx);
ba12070f
NL		 669
670/** Computes r = generator * n + q * m
671 * \param group underlying EC_GROUP object
672 * \param r EC_POINT object for the result
673 * \param n BIGNUM with the multiplier for the group generator (optional)
674 * \param q EC_POINT object with the first factor of the second summand
675 * \param m BIGNUM with the second factor of the second summand
676 * \param ctx BN_CTX object (optional)
478b50cf 677 * \return 1 on success and 0 if an error occurred
ba12070f 678 */
0f113f3e
MC		 679int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
680 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
3a12ce01 681
ba12070f
NL		 682/** Stores multiples of generator for faster point multiplication
683 * \param group EC_GROUP object
684 * \param ctx BN_CTX object (optional)
478b50cf 685 * \return 1 on success and 0 if an error occurred
ba12070f
NL		 686 */
687int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
6cc5e19d 688
ba12070f
NL		 689/** Reports whether a precomputation has been done
690 * \param group EC_GROUP object
691 * \return 1 if a pre-computation has been done and 0 otherwise
692 */
693int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
6cc5e19d 694
ba12070f
NL		 695/********************************************************************/
696/* ASN1 stuff */
697/********************************************************************/
8aefe253 698
60b350a3 699DECLARE_ASN1_ITEM(ECPKPARAMETERS)
9ba6f347 700DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
60b350a3 701DECLARE_ASN1_ITEM(ECPARAMETERS)
9ba6f347 702DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
60b350a3 703
0f113f3e
MC		 704/*
705 * EC_GROUP_get_basis_type() returns the NID of the basis type used to
706 * represent the field elements
707 */
34f1f2a8 708int EC_GROUP_get_basis_type(const EC_GROUP *);
0f113f3e 709# ifndef OPENSSL_NO_EC2M
34f1f2a8 710int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
0f113f3e
MC		 711int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
712 unsigned int *k2, unsigned int *k3);
713# endif
8aefe253 714
86f300d3
DSH		 715# define OPENSSL_EC_EXPLICIT_CURVE 0x000
716# define OPENSSL_EC_NAMED_CURVE 0x001
458c2917 717
6343829a 718EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
458c2917
BM		 719int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
720
0f113f3e
MC		 721# define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
722# define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
723# define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
5dbd3efc 724 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
0f113f3e
MC		 725# define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
726 (unsigned char *)(x))
5f3d6f70 727
0f113f3e 728int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
0f113f3e
MC		 729# ifndef OPENSSL_NO_STDIO
730int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
731# endif
ba12070f
NL		 732
733/********************************************************************/
734/* EC_KEY functions */
735/********************************************************************/
736
14a7cfb3 737/* some values for the encoding_flag */
0f113f3e
MC		 738# define EC_PKEY_NO_PARAMETERS 0x001
739# define EC_PKEY_NO_PUBKEY 0x002
14a7cfb3 740
cac4fb58 741/* some values for the flags field */
0f113f3e
MC		 742# define EC_FLAG_NON_FIPS_ALLOW 0x1
743# define EC_FLAG_FIPS_CHECKED 0x2
a22a7e70 744# define EC_FLAG_COFACTOR_ECDH 0x1000
cac4fb58 745
ba12070f
NL		 746/** Creates a new EC_KEY object.
747 * \return EC_KEY object or NULL if an error occurred.
748 */
14a7cfb3 749EC_KEY *EC_KEY_new(void);
ba12070f 750
cac4fb58
DSH		 751int EC_KEY_get_flags(const EC_KEY *key);
752
753void EC_KEY_set_flags(EC_KEY *key, int flags);
754
755void EC_KEY_clear_flags(EC_KEY *key, int flags);
756
ba12070f
NL		 757/** Creates a new EC_KEY object using a named curve as underlying
758 * EC_GROUP object.
759 * \param nid NID of the named curve.
0f113f3e 760 * \return EC_KEY object or NULL if an error occurred.
ba12070f 761 */
9dd84053 762EC_KEY *EC_KEY_new_by_curve_name(int nid);
ba12070f
NL		 763
764/** Frees a EC_KEY object.
765 * \param key EC_KEY object to be freed.
766 */
767void EC_KEY_free(EC_KEY *key);
768
769/** Copies a EC_KEY object.
770 * \param dst destination EC_KEY object
771 * \param src src EC_KEY object
772 * \return dst or NULL if an error occurred.
773 */
4a9a0d9b 774EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
ba12070f
NL		 775
776/** Creates a new EC_KEY object and copies the content from src to it.
777 * \param src the source EC_KEY object
778 * \return newly created EC_KEY object or NULL if an error occurred.
779 */
4a9a0d9b 780EC_KEY *EC_KEY_dup(const EC_KEY *src);
ba12070f
NL		 781
782/** Increases the internal reference count of a EC_KEY object.
783 * \param key EC_KEY object
784 * \return 1 on success and 0 if an error occurred.
785 */
786int EC_KEY_up_ref(EC_KEY *key);
787
d1da335c
RL		 788/** Returns the ENGINE object of a EC_KEY object
789 * \param key EC_KEY object
790 * \return the ENGINE object (possibly NULL).
791 */
792ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey);
793
ba12070f
NL		 794/** Returns the EC_GROUP object of a EC_KEY object
795 * \param key EC_KEY object
796 * \return the EC_GROUP object (possibly NULL).
797 */
798const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
799
800/** Sets the EC_GROUP of a EC_KEY object.
801 * \param key EC_KEY object
802 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
803 * object will use an own copy of the EC_GROUP).
804 * \return 1 on success and 0 if an error occurred.
805 */
806int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
807
808/** Returns the private key of a EC_KEY object.
809 * \param key EC_KEY object
810 * \return a BIGNUM with the private key (possibly NULL).
811 */
812const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
813
814/** Sets the private key of a EC_KEY object.
815 * \param key EC_KEY object
816 * \param prv BIGNUM with the private key (note: the EC_KEY object
817 * will use an own copy of the BIGNUM).
818 * \return 1 on success and 0 if an error occurred.
819 */
820int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
821
822/** Returns the public key of a EC_KEY object.
823 * \param key the EC_KEY object
824 * \return a EC_POINT object with the public key (possibly NULL)
825 */
826const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
827
828/** Sets the public key of a EC_KEY object.
829 * \param key EC_KEY object
830 * \param pub EC_POINT object with the public key (note: the EC_KEY object
831 * will use an own copy of the EC_POINT object).
832 * \return 1 on success and 0 if an error occurred.
833 */
834int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
835
836unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
9945b460
DSH		 837void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
838point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
839void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
3aef36ff
RS		 840
841#define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
842 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
843int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
844void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
845
9dd84053 846/* wrapper functions for the underlying EC_GROUP object */
9945b460 847void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
ba12070f 848
0f113f3e 849/** Creates a table of pre-computed multiples of the generator to
ba12070f
NL		 850 * accelerate further EC_KEY operations.
851 * \param key EC_KEY object
852 * \param ctx BN_CTX object (optional)
853 * \return 1 on success and 0 if an error occurred.
854 */
855int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
856
857/** Creates a new ec private (and optional a new public) key.
858 * \param key EC_KEY object
859 * \return 1 on success and 0 if an error occurred.
860 */
861int EC_KEY_generate_key(EC_KEY *key);
862
863/** Verifies that a private and/or public key is valid.
864 * \param key the EC_KEY object
865 * \return 1 on success and 0 otherwise.
866 */
867int EC_KEY_check_key(const EC_KEY *key);
868
4b0555ec 869/** Indicates if an EC_KEY can be used for signing.
f5fd3848 870 * \param eckey the EC_KEY object
4b0555ec
DSH		 871 * \return 1 if can can sign and 0 otherwise.
872 */
873int EC_KEY_can_sign(const EC_KEY *eckey);
874
8483a003 875/** Sets a public key from affine coordinates performing
478b50cf 876 * necessary NIST PKV tests.
fef1c40b
DSH		 877 * \param key the EC_KEY object
878 * \param x public key x coordinate
879 * \param y public key y coordinate
880 * \return 1 on success and 0 otherwise.
881 */
0f113f3e
MC		 882int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
883 BIGNUM *y);
ba12070f 884
981bd8a2
DSH		 885/** Encodes an EC_KEY public key to an allocated octet string
886 * \param key key to encode
887 * \param form point conversion form
888 * \param pbuf returns pointer to allocated buffer
981bd8a2
DSH		 889 * \param ctx BN_CTX object (optional)
890 * \return the length of the encoded octet string or 0 if an error occurred
891 */
981bd8a2
DSH		 892size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
893 unsigned char **pbuf, BN_CTX *ctx);
894
895/** Decodes a EC_KEY public key from a octet string
896 * \param key key to decode
897 * \param buf memory buffer with the encoded ec point
898 * \param len length of the encoded ec point
899 * \param ctx BN_CTX object (optional)
900 * \return 1 on success and 0 if an error occurred
901 */
902
903int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len,
904 BN_CTX *ctx);
905
cf241395
DSH		 906/** Decodes an EC_KEY private key from an octet string
907 * \param key key to decode
908 * \param buf memory buffer with the encoded private key
909 * \param len length of the encoded key
910 * \return 1 on success and 0 if an error occurred
911 */
912
25d57dc7 913int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf, size_t len);
cf241395
DSH		 914
915/** Encodes a EC_KEY private key to an octet string
916 * \param key key to encode
917 * \param buf memory buffer for the result. If NULL the function returns
918 * required buffer size.
919 * \param len length of the memory buffer
920 * \return the length of the encoded octet string or 0 if an error occurred
921 */
922
923size_t EC_KEY_priv2oct(const EC_KEY *key, unsigned char *buf, size_t len);
924
7fc7d1a7 925/** Encodes an EC_KEY private key to an allocated octet string
f5fd3848 926 * \param eckey key to encode
7fc7d1a7
DSH		 927 * \param pbuf returns pointer to allocated buffer
928 * \return the length of the encoded octet string or 0 if an error occurred
929 */
7fc7d1a7 930size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf);
cf241395 931
ba12070f
NL		 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 */
6343829a 942EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
ba12070f
NL		 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 */
950int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
951
ba12070f
NL		 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 */
963EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
964
965/** Encodes ec parameter and stores the result in a buffer.
1afd7fa9 966 * \param key the EC_KEY object with ec parameters to encode
ba12070f
NL		 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 */
971int i2d_ECParameters(EC_KEY *key, unsigned char **out);
972
ba12070f
NL		 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 */
985EC_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 */
60c25873 993int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out);
14a7cfb3 994
ba12070f
NL		 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 */
0f113f3e 1000int ECParameters_print(BIO *bp, const EC_KEY *key);
ba12070f
NL		 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
0f113f3e 1005 * \param off line offset
ba12070f
NL		 1006 * \return 1 on success and 0 if an error occurred
1007 */
0f113f3e 1008int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
ba12070f 1009
0f113f3e 1010# ifndef OPENSSL_NO_STDIO
ba12070f
NL		 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 */
0f113f3e 1016int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
ba12070f
NL		 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
0f113f3e 1021 * \param off line offset
ba12070f
NL		 1022 * \return 1 on success and 0 if an error occurred
1023 */
0f113f3e 1024int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
ba12070f 1025
0f113f3e 1026# endif
0bee0e62 1027
28572b57
DSH		 1028const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1029const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1030void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
3aef36ff
RS		 1031const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
1032int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
28572b57
DSH		 1033EC_KEY *EC_KEY_new_method(ENGINE *engine);
1034
768c53e1
DSH		 1035int 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
a22a7e70 1040int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
2c61a5ec
DSH		 1041 const EC_KEY *ecdh,
1042 void *(*KDF) (const void *in, size_t inlen,
1043 void *out, size_t *outlen));
a22a7e70 1044
714b2abb
DSH		 1045typedef struct ECDSA_SIG_st ECDSA_SIG;
1046
ef5b2ba6
DSH		 1047/** Allocates and initialize a ECDSA_SIG structure
1048 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1049 */
1050ECDSA_SIG *ECDSA_SIG_new(void);
1051
1052/** frees a ECDSA_SIG structure
1053 * \param sig pointer to the ECDSA_SIG structure
1054 */
1055void 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 */
1063int 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 */
1072ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
1073
7236e3c8
DSH		 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 */
9267c11b 1079void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
7236e3c8 1080
6a571a18
TS		 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 */
1d454d58 1086int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
6a571a18 1087
180eec16
DSH		 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 */
1095ECDSA_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)
8483a003 1103 * \param rp BIGNUM with a pre-computed rp value (optional),
180eec16
DSH		 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 */
1108ECDSA_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 */
1121int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1122 const ECDSA_SIG *sig, EC_KEY *eckey);
1123
bd3602eb
DSH		 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 */
1131int 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 */
1143int 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)
8483a003 1154 * \param rp BIGNUM with a pre-computed rp value (optional),
bd3602eb
DSH		 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 */
1159int 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 */
1174int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
1175 const unsigned char *sig, int siglen, EC_KEY *eckey);
7236e3c8 1176
cf517a6d
DSH		 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 */
1181int ECDSA_size(const EC_KEY *eckey);
1182
7bb75a5d
DSH		 1183/********************************************************************/
1184/* EC_KEY_METHOD constructors, destructors, writers and accessors */
1185/********************************************************************/
1186
f8d7d2d6
DSH		 1187EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
1188void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1189void 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
1199void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1200 int (*keygen)(EC_KEY *key));
1201
1202void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
e2285d87
DSH		 1203 int (*ckey)(unsigned char **psec,
1204 size_t *pseclen,
f8d7d2d6 1205 const EC_POINT *pub_key,
e2285d87 1206 const EC_KEY *ecdh));
f8d7d2d6
DSH		 1207
1208void 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
1222void 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
1232void 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
1243void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
1244 int (**pkeygen)(EC_KEY *key));
1245
1246void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
e2285d87
DSH		 1247 int (**pck)(unsigned char **psec,
1248 size_t *pseclen,
f8d7d2d6 1249 const EC_POINT *pub_key,
e2285d87 1250 const EC_KEY *ecdh));
f8d7d2d6
DSH		 1251
1252void 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
1266void 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
0f113f3e 1276# define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
458c2917 1277
0f113f3e
MC		 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
ad0db060
DSH		 1283# endif
1284# endif
ad0db060 1285
0f113f3e
MC		 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, \
37659ea4 1319 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)(md))
0f113f3e
MC		 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, \
37659ea4 1324 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)(pmd))
0f113f3e
MC		 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, \
37659ea4
BE		 1334 EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, \
1335 (void *)(plen))
0f113f3e
MC		 1336
1337# define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
1338 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1339 EVP_PKEY_OP_DERIVE, \
37659ea4 1340 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)(p))
0f113f3e
MC		 1341
1342# define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
1343 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1344 EVP_PKEY_OP_DERIVE, \
37659ea4 1345 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)(p))
0f113f3e
MC		 1346
1347# define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1)
1348# define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2)
1349# define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3)
1350# define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4)
1351# define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5)
1352# define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6)
1353# define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7)
1354# define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8)
1355# define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9)
1356# define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10)
25af7a5d 1357/* KDF types */
0f113f3e
MC		 1358# define EVP_PKEY_ECDH_KDF_NONE 1
1359# define EVP_PKEY_ECDH_KDF_X9_62 2
9ca7047d 1360
65e81670 1361/* BEGIN ERROR CODES */
0f113f3e
MC		 1362/*
1363 * The following lines are auto generated by the script mkerr.pl. Any changes
65e81670
BM		 1364 * made after this point may be overwritten when the script is next run.
1365 */
0cd0a820 1366
69588edb 1367int ERR_load_EC_strings(void);
6cc5e19d 1368
65e81670 1369/* Error codes for the EC functions. */
6cc5e19d 1370
65e81670 1371/* Function codes. */
0f113f3e 1372# define EC_F_BN_TO_FELEM 224
0f113f3e
MC		 1373# define EC_F_D2I_ECPARAMETERS 144
1374# define EC_F_D2I_ECPKPARAMETERS 145
1375# define EC_F_D2I_ECPRIVATEKEY 146
1376# define EC_F_DO_EC_KEY_PRINT 221
1377# define EC_F_ECDH_CMS_DECRYPT 238
1378# define EC_F_ECDH_CMS_SET_SHARED_INFO 239
53e3189d 1379# define EC_F_ECDH_COMPUTE_KEY 246
83f0e802 1380# define EC_F_ECDH_SIMPLE_COMPUTE_KEY 257
6e73d12e
DSH		 1381# define EC_F_ECDSA_DO_SIGN_EX 251
1382# define EC_F_ECDSA_DO_VERIFY 252
89313de5 1383# define EC_F_ECDSA_SIGN_EX 254
8c661f76 1384# define EC_F_ECDSA_SIGN_SETUP 248
8cc44d97 1385# define EC_F_ECDSA_SIG_NEW 265
89313de5 1386# define EC_F_ECDSA_VERIFY 253
9f889cc1 1387# define EC_F_ECD_ITEM_VERIFY 272
0f113f3e
MC		 1388# define EC_F_ECKEY_PARAM2TYPE 223
1389# define EC_F_ECKEY_PARAM_DECODE 212
1390# define EC_F_ECKEY_PRIV_DECODE 213
1391# define EC_F_ECKEY_PRIV_ENCODE 214
1392# define EC_F_ECKEY_PUB_DECODE 215
1393# define EC_F_ECKEY_PUB_ENCODE 216
1394# define EC_F_ECKEY_TYPE2PARAM 220
1395# define EC_F_ECPARAMETERS_PRINT 147
1396# define EC_F_ECPARAMETERS_PRINT_FP 148
1397# define EC_F_ECPKPARAMETERS_PRINT 149
1398# define EC_F_ECPKPARAMETERS_PRINT_FP 150
d2fa70d8
DSH		 1399# define EC_F_ECP_NISTZ256_GET_AFFINE 240
1400# define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE 243
1401# define EC_F_ECP_NISTZ256_POINTS_MUL 241
1402# define EC_F_ECP_NISTZ256_PRE_COMP_NEW 244
1403# define EC_F_ECP_NISTZ256_WINDOWED_MUL 242
59bf0f03
DSH		 1404# define EC_F_ECX_KEY_OP 266
1405# define EC_F_ECX_PRIV_ENCODE 267
1406# define EC_F_ECX_PUB_ENCODE 268
0f113f3e
MC		 1407# define EC_F_EC_ASN1_GROUP2CURVE 153
1408# define EC_F_EC_ASN1_GROUP2FIELDID 154
0f113f3e
MC		 1409# define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY 208
1410# define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT 159
1411# define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE 195
1412# define EC_F_EC_GF2M_SIMPLE_OCT2POINT 160
1413# define EC_F_EC_GF2M_SIMPLE_POINT2OCT 161
1414# define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
1415# define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
1416# define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES 164
1417# define EC_F_EC_GFP_MONT_FIELD_DECODE 133
1418# define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
1419# define EC_F_EC_GFP_MONT_FIELD_MUL 131
1420# define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE 209
1421# define EC_F_EC_GFP_MONT_FIELD_SQR 132
1422# define EC_F_EC_GFP_MONT_GROUP_SET_CURVE 189
0f113f3e
MC		 1423# define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE 225
1424# define EC_F_EC_GFP_NISTP224_POINTS_MUL 228
1425# define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
1426# define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE 230
1427# define EC_F_EC_GFP_NISTP256_POINTS_MUL 231
1428# define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
1429# define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE 233
1430# define EC_F_EC_GFP_NISTP521_POINTS_MUL 234
1431# define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
1432# define EC_F_EC_GFP_NIST_FIELD_MUL 200
1433# define EC_F_EC_GFP_NIST_FIELD_SQR 201
1434# define EC_F_EC_GFP_NIST_GROUP_SET_CURVE 202
1435# define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 165
1436# define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE 166
0f113f3e
MC		 1437# define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
1438# define EC_F_EC_GFP_SIMPLE_OCT2POINT 103
1439# define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
1440# define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
1441# define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES 167
0f113f3e 1442# define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES 168
0f113f3e 1443# define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES 169
0f113f3e
MC		 1444# define EC_F_EC_GROUP_CHECK 170
1445# define EC_F_EC_GROUP_CHECK_DISCRIMINANT 171
1446# define EC_F_EC_GROUP_COPY 106
0f113f3e
MC		 1447# define EC_F_EC_GROUP_GET_CURVE_GF2M 172
1448# define EC_F_EC_GROUP_GET_CURVE_GFP 130
1449# define EC_F_EC_GROUP_GET_DEGREE 173
60b350a3
RS		 1450# define EC_F_EC_GROUP_GET_ECPARAMETERS 261
1451# define EC_F_EC_GROUP_GET_ECPKPARAMETERS 262
0f113f3e
MC		 1452# define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS 193
1453# define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS 194
1454# define EC_F_EC_GROUP_NEW 108
1455# define EC_F_EC_GROUP_NEW_BY_CURVE_NAME 174
1456# define EC_F_EC_GROUP_NEW_FROM_DATA 175
60b350a3
RS		 1457# define EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS 263
1458# define EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS 264
0f113f3e
MC		 1459# define EC_F_EC_GROUP_SET_CURVE_GF2M 176
1460# define EC_F_EC_GROUP_SET_CURVE_GFP 109
0f113f3e
MC		 1461# define EC_F_EC_GROUP_SET_GENERATOR 111
1462# define EC_F_EC_KEY_CHECK_KEY 177
1463# define EC_F_EC_KEY_COPY 178
1464# define EC_F_EC_KEY_GENERATE_KEY 179
1465# define EC_F_EC_KEY_NEW 182
d2fa70d8 1466# define EC_F_EC_KEY_NEW_METHOD 245
d810700b 1467# define EC_F_EC_KEY_OCT2PRIV 255
0f113f3e
MC		 1468# define EC_F_EC_KEY_PRINT 180
1469# define EC_F_EC_KEY_PRINT_FP 181
d810700b 1470# define EC_F_EC_KEY_PRIV2OCT 256
0f113f3e 1471# define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES 229
83f0e802
DSH		 1472# define EC_F_EC_KEY_SIMPLE_CHECK_KEY 258
1473# define EC_F_EC_KEY_SIMPLE_OCT2PRIV 259
1474# define EC_F_EC_KEY_SIMPLE_PRIV2OCT 260
0f113f3e
MC		 1475# define EC_F_EC_POINTS_MAKE_AFFINE 136
1476# define EC_F_EC_POINT_ADD 112
1477# define EC_F_EC_POINT_CMP 113
1478# define EC_F_EC_POINT_COPY 114
1479# define EC_F_EC_POINT_DBL 115
1480# define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M 183
1481# define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
1482# define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
1483# define EC_F_EC_POINT_INVERT 210
1484# define EC_F_EC_POINT_IS_AT_INFINITY 118
1485# define EC_F_EC_POINT_IS_ON_CURVE 119
1486# define EC_F_EC_POINT_MAKE_AFFINE 120
0f113f3e
MC		 1487# define EC_F_EC_POINT_NEW 121
1488# define EC_F_EC_POINT_OCT2POINT 122
1489# define EC_F_EC_POINT_POINT2OCT 123
1490# define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M 185
1491# define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
1492# define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M 186
1493# define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
1494# define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
1495# define EC_F_EC_POINT_SET_TO_INFINITY 127
0f113f3e
MC		 1496# define EC_F_EC_PRE_COMP_NEW 196
1497# define EC_F_EC_WNAF_MUL 187
1498# define EC_F_EC_WNAF_PRECOMPUTE_MULT 188
1499# define EC_F_I2D_ECPARAMETERS 190
1500# define EC_F_I2D_ECPKPARAMETERS 191
1501# define EC_F_I2D_ECPRIVATEKEY 192
1502# define EC_F_I2O_ECPUBLICKEY 151
1503# define EC_F_NISTP224_PRE_COMP_NEW 227
1504# define EC_F_NISTP256_PRE_COMP_NEW 236
1505# define EC_F_NISTP521_PRE_COMP_NEW 237
0f113f3e
MC		 1506# define EC_F_O2I_ECPUBLICKEY 152
1507# define EC_F_OLD_EC_PRIV_DECODE 222
53e3189d 1508# define EC_F_OSSL_ECDH_COMPUTE_KEY 247
8c661f76
DSH		 1509# define EC_F_OSSL_ECDSA_SIGN_SIG 249
1510# define EC_F_OSSL_ECDSA_VERIFY_SIG 250
ca23d3e0
DSH		 1511# define EC_F_PKEY_ECD_CTRL 270
1512# define EC_F_PKEY_ECD_DIGESTSIGN 271
59bf0f03 1513# define EC_F_PKEY_ECX_DERIVE 269
0f113f3e
MC		 1514# define EC_F_PKEY_EC_CTRL 197
1515# define EC_F_PKEY_EC_CTRL_STR 198
1516# define EC_F_PKEY_EC_DERIVE 217
1517# define EC_F_PKEY_EC_KEYGEN 199
1518# define EC_F_PKEY_EC_PARAMGEN 219
1519# define EC_F_PKEY_EC_SIGN 218
6cc5e19d 1520
65e81670 1521/* Reason codes. */
0f113f3e 1522# define EC_R_ASN1_ERROR 115
8c661f76 1523# define EC_R_BAD_SIGNATURE 156
0f113f3e
MC		 1524# define EC_R_BIGNUM_OUT_OF_RANGE 144
1525# define EC_R_BUFFER_TOO_SMALL 100
1526# define EC_R_COORDINATES_OUT_OF_RANGE 146
83f0e802 1527# define EC_R_CURVE_DOES_NOT_SUPPORT_ECDH 160
1db3107a 1528# define EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING 159
0f113f3e
MC		 1529# define EC_R_D2I_ECPKPARAMETERS_FAILURE 117
1530# define EC_R_DECODE_ERROR 142
1531# define EC_R_DISCRIMINANT_IS_ZERO 118
1532# define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 119
1533# define EC_R_FIELD_TOO_LARGE 143
1534# define EC_R_GF2M_NOT_SUPPORTED 147
1535# define EC_R_GROUP2PKPARAMETERS_FAILURE 120
1536# define EC_R_I2D_ECPKPARAMETERS_FAILURE 121
1537# define EC_R_INCOMPATIBLE_OBJECTS 101
1538# define EC_R_INVALID_ARGUMENT 112
1539# define EC_R_INVALID_COMPRESSED_POINT 110
1540# define EC_R_INVALID_COMPRESSION_BIT 109
1541# define EC_R_INVALID_CURVE 141
1542# define EC_R_INVALID_DIGEST 151
1543# define EC_R_INVALID_DIGEST_TYPE 138
1544# define EC_R_INVALID_ENCODING 102
1545# define EC_R_INVALID_FIELD 103
1546# define EC_R_INVALID_FORM 104
1547# define EC_R_INVALID_GROUP_ORDER 122
59bf0f03 1548# define EC_R_INVALID_KEY 116
e9b1c42f 1549# define EC_R_INVALID_OUTPUT_LENGTH 161
59bf0f03 1550# define EC_R_INVALID_PEER_KEY 133
0f113f3e
MC		 1551# define EC_R_INVALID_PENTANOMIAL_BASIS 132
1552# define EC_R_INVALID_PRIVATE_KEY 123
1553# define EC_R_INVALID_TRINOMIAL_BASIS 137
1554# define EC_R_KDF_PARAMETER_ERROR 148
1555# define EC_R_KEYS_NOT_SET 140
1556# define EC_R_MISSING_PARAMETERS 124
1557# define EC_R_MISSING_PRIVATE_KEY 125
8c661f76 1558# define EC_R_NEED_NEW_SETUP_VALUES 157
0f113f3e 1559# define EC_R_NOT_A_NIST_PRIME 135
0f113f3e
MC		 1560# define EC_R_NOT_IMPLEMENTED 126
1561# define EC_R_NOT_INITIALIZED 111
0f113f3e 1562# define EC_R_NO_PARAMETERS_SET 139
53e3189d 1563# define EC_R_NO_PRIVATE_VALUE 154
5a6a1029 1564# define EC_R_OPERATION_NOT_SUPPORTED 152
0f113f3e
MC		 1565# define EC_R_PASSED_NULL_PARAMETER 134
1566# define EC_R_PEER_KEY_ERROR 149
1567# define EC_R_PKPARAMETERS2GROUP_FAILURE 127
53e3189d 1568# define EC_R_POINT_ARITHMETIC_FAILURE 155
0f113f3e
MC		 1569# define EC_R_POINT_AT_INFINITY 106
1570# define EC_R_POINT_IS_NOT_ON_CURVE 107
8c661f76 1571# define EC_R_RANDOM_NUMBER_GENERATION_FAILED 158
0f113f3e
MC		 1572# define EC_R_SHARED_INFO_ERROR 150
1573# define EC_R_SLOT_FULL 108
1574# define EC_R_UNDEFINED_GENERATOR 113
1575# define EC_R_UNDEFINED_ORDER 128
1576# define EC_R_UNKNOWN_GROUP 129
1577# define EC_R_UNKNOWN_ORDER 114
1578# define EC_R_UNSUPPORTED_FIELD 131
1579# define EC_R_WRONG_CURVE_PARAMETERS 145
1580# define EC_R_WRONG_ORDER 130
6cc5e19d 1581
0cd0a820 1582# ifdef __cplusplus
65e81670 1583}
0cd0a820 1584# endif
3c27208f 1585# endif
5acaa495 1586#endif
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