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1 /* crypto/ec/ec.h */
2 /*
3 * Originally written by Bodo Moeller for the OpenSSL project.
4 */
5 /**
6 * \file crypto/ec/ec.h Include file for the OpenSSL EC functions
7 * \author Originally written by Bodo Moeller for the OpenSSL project
8 */
9 /* ====================================================================
10 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * 3. All advertising materials mentioning features or use of this
25 * software must display the following acknowledgment:
26 * "This product includes software developed by the OpenSSL Project
27 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
28 *
29 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
30 * endorse or promote products derived from this software without
31 * prior written permission. For written permission, please contact
32 * openssl-core@openssl.org.
33 *
34 * 5. Products derived from this software may not be called "OpenSSL"
35 * nor may "OpenSSL" appear in their names without prior written
36 * permission of the OpenSSL Project.
37 *
38 * 6. Redistributions of any form whatsoever must retain the following
39 * acknowledgment:
40 * "This product includes software developed by the OpenSSL Project
41 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
44 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
47 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
52 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
54 * OF THE POSSIBILITY OF SUCH DAMAGE.
55 * ====================================================================
56 *
57 * This product includes cryptographic software written by Eric Young
58 * (eay@cryptsoft.com). This product includes software written by Tim
59 * Hudson (tjh@cryptsoft.com).
60 *
61 */
62 /* ====================================================================
63 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
64 *
65 * Portions of the attached software ("Contribution") are developed by
66 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
67 *
68 * The Contribution is licensed pursuant to the OpenSSL open source
69 * license provided above.
70 *
71 * The elliptic curve binary polynomial software is originally written by
72 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
73 *
74 */
75
76 #ifndef HEADER_EC_H
77 # define HEADER_EC_H
78
79 # include <openssl/opensslconf.h>
80
81 # ifdef OPENSSL_NO_EC
82 # error EC is disabled.
83 # endif
84
85 # include <openssl/asn1.h>
86 # include <openssl/symhacks.h>
87 # ifndef OPENSSL_NO_DEPRECATED
88 # include <openssl/bn.h>
89 # endif
90
91 # ifdef __cplusplus
92 extern "C" {
93 # elif defined(__SUNPRO_C)
94 # if __SUNPRO_C >= 0x520
95 # pragma error_messages (off,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
96 # endif
97 # endif
98
99 # ifndef OPENSSL_ECC_MAX_FIELD_BITS
100 # define OPENSSL_ECC_MAX_FIELD_BITS 661
101 # endif
102
103 /** Enum for the point conversion form as defined in X9.62 (ECDSA)
104 * for the encoding of a elliptic curve point (x,y) */
105 typedef enum {
106 /** the point is encoded as z||x, where the octet z specifies
107 * which solution of the quadratic equation y is */
108 POINT_CONVERSION_COMPRESSED = 2,
109 /** the point is encoded as z||x||y, where z is the octet 0x04 */
110 POINT_CONVERSION_UNCOMPRESSED = 4,
111 /** the point is encoded as z||x||y, where the octet z specifies
112 * which solution of the quadratic equation y is */
113 POINT_CONVERSION_HYBRID = 6
114 } point_conversion_form_t;
115
116 typedef struct ec_method_st EC_METHOD;
117
118 typedef struct ec_group_st
119 /*-
120 EC_METHOD *meth;
121 -- field definition
122 -- curve coefficients
123 -- optional generator with associated information (order, cofactor)
124 -- optional extra data (precomputed table for fast computation of multiples of generator)
125 -- ASN1 stuff
126 */
127 EC_GROUP;
128
129 typedef struct ec_point_st EC_POINT;
130
131 /********************************************************************/
132 /* EC_METHODs for curves over GF(p) */
133 /********************************************************************/
134
135 /** Returns the basic GFp ec methods which provides the basis for the
136 * optimized methods.
137 * \return EC_METHOD object
138 */
139 const EC_METHOD *EC_GFp_simple_method(void);
140
141 /** Returns GFp methods using montgomery multiplication.
142 * \return EC_METHOD object
143 */
144 const EC_METHOD *EC_GFp_mont_method(void);
145
146 /** Returns GFp methods using optimized methods for NIST recommended curves
147 * \return EC_METHOD object
148 */
149 const EC_METHOD *EC_GFp_nist_method(void);
150
151 # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
152 /** Returns 64-bit optimized methods for nistp224
153 * \return EC_METHOD object
154 */
155 const EC_METHOD *EC_GFp_nistp224_method(void);
156
157 /** Returns 64-bit optimized methods for nistp256
158 * \return EC_METHOD object
159 */
160 const EC_METHOD *EC_GFp_nistp256_method(void);
161
162 /** Returns 64-bit optimized methods for nistp521
163 * \return EC_METHOD object
164 */
165 const EC_METHOD *EC_GFp_nistp521_method(void);
166 # endif
167
168 # ifndef OPENSSL_NO_EC2M
169 /********************************************************************/
170 /* EC_METHOD for curves over GF(2^m) */
171 /********************************************************************/
172
173 /** Returns the basic GF2m ec method
174 * \return EC_METHOD object
175 */
176 const EC_METHOD *EC_GF2m_simple_method(void);
177
178 # endif
179
180 /********************************************************************/
181 /* EC_GROUP functions */
182 /********************************************************************/
183
184 /** Creates a new EC_GROUP object
185 * \param meth EC_METHOD to use
186 * \return newly created EC_GROUP object or NULL in case of an error.
187 */
188 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
189
190 /** Frees a EC_GROUP object
191 * \param group EC_GROUP object to be freed.
192 */
193 void EC_GROUP_free(EC_GROUP *group);
194
195 /** Clears and frees a EC_GROUP object
196 * \param group EC_GROUP object to be cleared and freed.
197 */
198 void EC_GROUP_clear_free(EC_GROUP *group);
199
200 /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
201 * \param dst destination EC_GROUP object
202 * \param src source EC_GROUP object
203 * \return 1 on success and 0 if an error occurred.
204 */
205 int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
206
207 /** Creates a new EC_GROUP object and copies the copies the content
208 * form src to the newly created EC_KEY object
209 * \param src source EC_GROUP object
210 * \return newly created EC_GROUP object or NULL in case of an error.
211 */
212 EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
213
214 /** Returns the EC_METHOD of the EC_GROUP object.
215 * \param group EC_GROUP object
216 * \return EC_METHOD used in this EC_GROUP object.
217 */
218 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
219
220 /** Returns the field type of the EC_METHOD.
221 * \param meth EC_METHOD object
222 * \return NID of the underlying field type OID.
223 */
224 int EC_METHOD_get_field_type(const EC_METHOD *meth);
225
226 /** Sets the generator and it's order/cofactor of a EC_GROUP object.
227 * \param group EC_GROUP object
228 * \param generator EC_POINT object with the generator.
229 * \param order the order of the group generated by the generator.
230 * \param cofactor the index of the sub-group generated by the generator
231 * in the group of all points on the elliptic curve.
232 * \return 1 on success and 0 if an error occured
233 */
234 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
235 const BIGNUM *order, const BIGNUM *cofactor);
236
237 /** Returns the generator of a EC_GROUP object.
238 * \param group EC_GROUP object
239 * \return the currently used generator (possibly NULL).
240 */
241 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
242
243 /** Returns the montgomery data for order(Generator)
244 * \param group EC_GROUP object
245 * \return the currently used generator (possibly NULL).
246 */
247 BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
248
249 /** Gets the order of a EC_GROUP
250 * \param group EC_GROUP object
251 * \param order BIGNUM to which the order is copied
252 * \param ctx BN_CTX object (optional)
253 * \return 1 on success and 0 if an error occured
254 */
255 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
256
257 /** Gets the cofactor of a EC_GROUP
258 * \param group EC_GROUP object
259 * \param cofactor BIGNUM to which the cofactor is copied
260 * \param ctx BN_CTX object (optional)
261 * \return 1 on success and 0 if an error occured
262 */
263 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
264 BN_CTX *ctx);
265
266 /** Sets the name of a EC_GROUP object
267 * \param group EC_GROUP object
268 * \param nid NID of the curve name OID
269 */
270 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
271
272 /** Returns the curve name of a EC_GROUP object
273 * \param group EC_GROUP object
274 * \return NID of the curve name OID or 0 if not set.
275 */
276 int EC_GROUP_get_curve_name(const EC_GROUP *group);
277
278 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
279 int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
280
281 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
282 point_conversion_form_t form);
283 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
284
285 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
286 size_t EC_GROUP_get_seed_len(const EC_GROUP *);
287 size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
288
289 /** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
290 * \param group EC_GROUP object
291 * \param p BIGNUM with the prime number
292 * \param a BIGNUM with parameter a of the equation
293 * \param b BIGNUM with parameter b of the equation
294 * \param ctx BN_CTX object (optional)
295 * \return 1 on success and 0 if an error occured
296 */
297 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
298 const BIGNUM *b, BN_CTX *ctx);
299
300 /** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
301 * \param group EC_GROUP object
302 * \param p BIGNUM for the prime number
303 * \param a BIGNUM for parameter a of the equation
304 * \param b BIGNUM for parameter b of the equation
305 * \param ctx BN_CTX object (optional)
306 * \return 1 on success and 0 if an error occured
307 */
308 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
309 BIGNUM *b, BN_CTX *ctx);
310
311 # ifndef OPENSSL_NO_EC2M
312 /** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
313 * \param group EC_GROUP object
314 * \param p BIGNUM with the polynomial defining the underlying field
315 * \param a BIGNUM with parameter a of the equation
316 * \param b BIGNUM with parameter b of the equation
317 * \param ctx BN_CTX object (optional)
318 * \return 1 on success and 0 if an error occured
319 */
320 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
321 const BIGNUM *b, BN_CTX *ctx);
322
323 /** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
324 * \param group EC_GROUP object
325 * \param p BIGNUM for the polynomial defining the underlying field
326 * \param a BIGNUM for parameter a of the equation
327 * \param b BIGNUM for parameter b of the equation
328 * \param ctx BN_CTX object (optional)
329 * \return 1 on success and 0 if an error occured
330 */
331 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
332 BIGNUM *b, BN_CTX *ctx);
333 # endif
334 /** Returns the number of bits needed to represent a field element
335 * \param group EC_GROUP object
336 * \return number of bits needed to represent a field element
337 */
338 int EC_GROUP_get_degree(const EC_GROUP *group);
339
340 /** Checks whether the parameter in the EC_GROUP define a valid ec group
341 * \param group EC_GROUP object
342 * \param ctx BN_CTX object (optional)
343 * \return 1 if group is a valid ec group and 0 otherwise
344 */
345 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
346
347 /** Checks whether the discriminant of the elliptic curve is zero or not
348 * \param group EC_GROUP object
349 * \param ctx BN_CTX object (optional)
350 * \return 1 if the discriminant is not zero and 0 otherwise
351 */
352 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
353
354 /** Compares two EC_GROUP objects
355 * \param a first EC_GROUP object
356 * \param b second EC_GROUP object
357 * \param ctx BN_CTX object (optional)
358 * \return 0 if both groups are equal and 1 otherwise
359 */
360 int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
361
362 /*
363 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
364 * choosing an appropriate EC_METHOD
365 */
366
367 /** Creates a new EC_GROUP object with the specified parameters defined
368 * over GFp (defined by the equation y^2 = x^3 + a*x + b)
369 * \param p BIGNUM with the prime number
370 * \param a BIGNUM with the parameter a of the equation
371 * \param b BIGNUM with the parameter b of the equation
372 * \param ctx BN_CTX object (optional)
373 * \return newly created EC_GROUP object with the specified parameters
374 */
375 EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
376 const BIGNUM *b, BN_CTX *ctx);
377 # ifndef OPENSSL_NO_EC2M
378 /** Creates a new EC_GROUP object with the specified parameters defined
379 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
380 * \param p BIGNUM with the polynomial defining the underlying field
381 * \param a BIGNUM with the parameter a of the equation
382 * \param b BIGNUM with the parameter b of the equation
383 * \param ctx BN_CTX object (optional)
384 * \return newly created EC_GROUP object with the specified parameters
385 */
386 EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
387 const BIGNUM *b, BN_CTX *ctx);
388 # endif
389 /** Creates a EC_GROUP object with a curve specified by a NID
390 * \param nid NID of the OID of the curve name
391 * \return newly created EC_GROUP object with specified curve or NULL
392 * if an error occurred
393 */
394 EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
395
396 /********************************************************************/
397 /* handling of internal curves */
398 /********************************************************************/
399
400 typedef struct {
401 int nid;
402 const char *comment;
403 } EC_builtin_curve;
404
405 /*
406 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
407 * available curves or zero if a error occurred. In case r ist not zero
408 * nitems EC_builtin_curve structures are filled with the data of the first
409 * nitems internal groups
410 */
411 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
412
413 const char *EC_curve_nid2nist(int nid);
414 int EC_curve_nist2nid(const char *name);
415
416 /********************************************************************/
417 /* EC_POINT functions */
418 /********************************************************************/
419
420 /** Creates a new EC_POINT object for the specified EC_GROUP
421 * \param group EC_GROUP the underlying EC_GROUP object
422 * \return newly created EC_POINT object or NULL if an error occurred
423 */
424 EC_POINT *EC_POINT_new(const EC_GROUP *group);
425
426 /** Frees a EC_POINT object
427 * \param point EC_POINT object to be freed
428 */
429 void EC_POINT_free(EC_POINT *point);
430
431 /** Clears and frees a EC_POINT object
432 * \param point EC_POINT object to be cleared and freed
433 */
434 void EC_POINT_clear_free(EC_POINT *point);
435
436 /** Copies EC_POINT object
437 * \param dst destination EC_POINT object
438 * \param src source EC_POINT object
439 * \return 1 on success and 0 if an error occured
440 */
441 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
442
443 /** Creates a new EC_POINT object and copies the content of the supplied
444 * EC_POINT
445 * \param src source EC_POINT object
446 * \param group underlying the EC_GROUP object
447 * \return newly created EC_POINT object or NULL if an error occurred
448 */
449 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
450
451 /** Returns the EC_METHOD used in EC_POINT object
452 * \param point EC_POINT object
453 * \return the EC_METHOD used
454 */
455 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
456
457 /** Sets a point to infinity (neutral element)
458 * \param group underlying EC_GROUP object
459 * \param point EC_POINT to set to infinity
460 * \return 1 on success and 0 if an error occured
461 */
462 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
463
464 /** Sets the jacobian projective coordinates of a EC_POINT over GFp
465 * \param group underlying EC_GROUP object
466 * \param p EC_POINT object
467 * \param x BIGNUM with the x-coordinate
468 * \param y BIGNUM with the y-coordinate
469 * \param z BIGNUM with the z-coordinate
470 * \param ctx BN_CTX object (optional)
471 * \return 1 on success and 0 if an error occured
472 */
473 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
474 EC_POINT *p, const BIGNUM *x,
475 const BIGNUM *y, const BIGNUM *z,
476 BN_CTX *ctx);
477
478 /** Gets the jacobian projective coordinates of a EC_POINT over GFp
479 * \param group underlying EC_GROUP object
480 * \param p EC_POINT object
481 * \param x BIGNUM for the x-coordinate
482 * \param y BIGNUM for the y-coordinate
483 * \param z BIGNUM for the z-coordinate
484 * \param ctx BN_CTX object (optional)
485 * \return 1 on success and 0 if an error occured
486 */
487 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
488 const EC_POINT *p, BIGNUM *x,
489 BIGNUM *y, BIGNUM *z,
490 BN_CTX *ctx);
491
492 /** Sets the affine coordinates of a EC_POINT over GFp
493 * \param group underlying EC_GROUP object
494 * \param p EC_POINT object
495 * \param x BIGNUM with the x-coordinate
496 * \param y BIGNUM with the y-coordinate
497 * \param ctx BN_CTX object (optional)
498 * \return 1 on success and 0 if an error occured
499 */
500 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
501 const BIGNUM *x, const BIGNUM *y,
502 BN_CTX *ctx);
503
504 /** Gets the affine coordinates of a EC_POINT over GFp
505 * \param group underlying EC_GROUP object
506 * \param p EC_POINT object
507 * \param x BIGNUM for the x-coordinate
508 * \param y BIGNUM for the y-coordinate
509 * \param ctx BN_CTX object (optional)
510 * \return 1 on success and 0 if an error occured
511 */
512 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
513 const EC_POINT *p, BIGNUM *x,
514 BIGNUM *y, BN_CTX *ctx);
515
516 /** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
517 * \param group underlying EC_GROUP object
518 * \param p EC_POINT object
519 * \param x BIGNUM with x-coordinate
520 * \param y_bit integer with the y-Bit (either 0 or 1)
521 * \param ctx BN_CTX object (optional)
522 * \return 1 on success and 0 if an error occured
523 */
524 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
525 EC_POINT *p, const BIGNUM *x,
526 int y_bit, BN_CTX *ctx);
527 # ifndef OPENSSL_NO_EC2M
528 /** Sets the affine coordinates of a EC_POINT over GF2m
529 * \param group underlying EC_GROUP object
530 * \param p EC_POINT object
531 * \param x BIGNUM with the x-coordinate
532 * \param y BIGNUM with the y-coordinate
533 * \param ctx BN_CTX object (optional)
534 * \return 1 on success and 0 if an error occured
535 */
536 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
537 const BIGNUM *x, const BIGNUM *y,
538 BN_CTX *ctx);
539
540 /** Gets the affine coordinates of a EC_POINT over GF2m
541 * \param group underlying EC_GROUP object
542 * \param p EC_POINT object
543 * \param x BIGNUM for the x-coordinate
544 * \param y BIGNUM for the y-coordinate
545 * \param ctx BN_CTX object (optional)
546 * \return 1 on success and 0 if an error occured
547 */
548 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
549 const EC_POINT *p, BIGNUM *x,
550 BIGNUM *y, BN_CTX *ctx);
551
552 /** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
553 * \param group underlying EC_GROUP object
554 * \param p EC_POINT object
555 * \param x BIGNUM with x-coordinate
556 * \param y_bit integer with the y-Bit (either 0 or 1)
557 * \param ctx BN_CTX object (optional)
558 * \return 1 on success and 0 if an error occured
559 */
560 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
561 EC_POINT *p, const BIGNUM *x,
562 int y_bit, BN_CTX *ctx);
563 # endif
564 /** Encodes a EC_POINT object to a octet string
565 * \param group underlying EC_GROUP object
566 * \param p EC_POINT object
567 * \param form point conversion form
568 * \param buf memory buffer for the result. If NULL the function returns
569 * required buffer size.
570 * \param len length of the memory buffer
571 * \param ctx BN_CTX object (optional)
572 * \return the length of the encoded octet string or 0 if an error occurred
573 */
574 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
575 point_conversion_form_t form,
576 unsigned char *buf, size_t len, BN_CTX *ctx);
577
578 /** Decodes a EC_POINT from a octet string
579 * \param group underlying EC_GROUP object
580 * \param p EC_POINT object
581 * \param buf memory buffer with the encoded ec point
582 * \param len length of the encoded ec point
583 * \param ctx BN_CTX object (optional)
584 * \return 1 on success and 0 if an error occured
585 */
586 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
587 const unsigned char *buf, size_t len, BN_CTX *ctx);
588
589 /* other interfaces to point2oct/oct2point: */
590 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
591 point_conversion_form_t form, BIGNUM *, BN_CTX *);
592 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
593 EC_POINT *, BN_CTX *);
594 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
595 point_conversion_form_t form, BN_CTX *);
596 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
597 EC_POINT *, BN_CTX *);
598
599 /********************************************************************/
600 /* functions for doing EC_POINT arithmetic */
601 /********************************************************************/
602
603 /** Computes the sum of two EC_POINT
604 * \param group underlying EC_GROUP object
605 * \param r EC_POINT object for the result (r = a + b)
606 * \param a EC_POINT object with the first summand
607 * \param b EC_POINT object with the second summand
608 * \param ctx BN_CTX object (optional)
609 * \return 1 on success and 0 if an error occured
610 */
611 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
612 const EC_POINT *b, BN_CTX *ctx);
613
614 /** Computes the double of a EC_POINT
615 * \param group underlying EC_GROUP object
616 * \param r EC_POINT object for the result (r = 2 * a)
617 * \param a EC_POINT object
618 * \param ctx BN_CTX object (optional)
619 * \return 1 on success and 0 if an error occured
620 */
621 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
622 BN_CTX *ctx);
623
624 /** Computes the inverse of a EC_POINT
625 * \param group underlying EC_GROUP object
626 * \param a EC_POINT object to be inverted (it's used for the result as well)
627 * \param ctx BN_CTX object (optional)
628 * \return 1 on success and 0 if an error occured
629 */
630 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
631
632 /** Checks whether the point is the neutral element of the group
633 * \param group the underlying EC_GROUP object
634 * \param p EC_POINT object
635 * \return 1 if the point is the neutral element and 0 otherwise
636 */
637 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
638
639 /** Checks whether the point is on the curve
640 * \param group underlying EC_GROUP object
641 * \param point EC_POINT object to check
642 * \param ctx BN_CTX object (optional)
643 * \return 1 if point if on the curve and 0 otherwise
644 */
645 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
646 BN_CTX *ctx);
647
648 /** Compares two EC_POINTs
649 * \param group underlying EC_GROUP object
650 * \param a first EC_POINT object
651 * \param b second EC_POINT object
652 * \param ctx BN_CTX object (optional)
653 * \return 0 if both points are equal and a value != 0 otherwise
654 */
655 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
656 BN_CTX *ctx);
657
658 int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
659 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
660 EC_POINT *points[], BN_CTX *ctx);
661
662 /** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i]
663 * \param group underlying EC_GROUP object
664 * \param r EC_POINT object for the result
665 * \param n BIGNUM with the multiplier for the group generator (optional)
666 * \param num number futher summands
667 * \param p array of size num of EC_POINT objects
668 * \param m array of size num of BIGNUM objects
669 * \param ctx BN_CTX object (optional)
670 * \return 1 on success and 0 if an error occured
671 */
672 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
673 size_t num, const EC_POINT *p[], const BIGNUM *m[],
674 BN_CTX *ctx);
675
676 /** Computes r = generator * n + q * m
677 * \param group underlying EC_GROUP object
678 * \param r EC_POINT object for the result
679 * \param n BIGNUM with the multiplier for the group generator (optional)
680 * \param q EC_POINT object with the first factor of the second summand
681 * \param m BIGNUM with the second factor of the second summand
682 * \param ctx BN_CTX object (optional)
683 * \return 1 on success and 0 if an error occured
684 */
685 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
686 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
687
688 /** Stores multiples of generator for faster point multiplication
689 * \param group EC_GROUP object
690 * \param ctx BN_CTX object (optional)
691 * \return 1 on success and 0 if an error occured
692 */
693 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
694
695 /** Reports whether a precomputation has been done
696 * \param group EC_GROUP object
697 * \return 1 if a pre-computation has been done and 0 otherwise
698 */
699 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
700
701 /********************************************************************/
702 /* ASN1 stuff */
703 /********************************************************************/
704
705 /*
706 * EC_GROUP_get_basis_type() returns the NID of the basis type used to
707 * represent the field elements
708 */
709 int EC_GROUP_get_basis_type(const EC_GROUP *);
710 # ifndef OPENSSL_NO_EC2M
711 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
712 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
713 unsigned int *k2, unsigned int *k3);
714 # endif
715
716 # define OPENSSL_EC_NAMED_CURVE 0x001
717
718 typedef struct ecpk_parameters_st ECPKPARAMETERS;
719
720 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
721 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
722
723 # define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
724 # define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
725 # define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
726 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
727 # define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
728 (unsigned char *)(x))
729
730 # ifndef OPENSSL_NO_BIO
731 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
732 # endif
733 # ifndef OPENSSL_NO_FP_API
734 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
735 # endif
736
737 /********************************************************************/
738 /* EC_KEY functions */
739 /********************************************************************/
740
741 typedef struct ec_key_st EC_KEY;
742
743 /* some values for the encoding_flag */
744 # define EC_PKEY_NO_PARAMETERS 0x001
745 # define EC_PKEY_NO_PUBKEY 0x002
746
747 /* some values for the flags field */
748 # define EC_FLAG_NON_FIPS_ALLOW 0x1
749 # define EC_FLAG_FIPS_CHECKED 0x2
750
751 /** Creates a new EC_KEY object.
752 * \return EC_KEY object or NULL if an error occurred.
753 */
754 EC_KEY *EC_KEY_new(void);
755
756 int EC_KEY_get_flags(const EC_KEY *key);
757
758 void EC_KEY_set_flags(EC_KEY *key, int flags);
759
760 void EC_KEY_clear_flags(EC_KEY *key, int flags);
761
762 /** Creates a new EC_KEY object using a named curve as underlying
763 * EC_GROUP object.
764 * \param nid NID of the named curve.
765 * \return EC_KEY object or NULL if an error occurred.
766 */
767 EC_KEY *EC_KEY_new_by_curve_name(int nid);
768
769 /** Frees a EC_KEY object.
770 * \param key EC_KEY object to be freed.
771 */
772 void EC_KEY_free(EC_KEY *key);
773
774 /** Copies a EC_KEY object.
775 * \param dst destination EC_KEY object
776 * \param src src EC_KEY object
777 * \return dst or NULL if an error occurred.
778 */
779 EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
780
781 /** Creates a new EC_KEY object and copies the content from src to it.
782 * \param src the source EC_KEY object
783 * \return newly created EC_KEY object or NULL if an error occurred.
784 */
785 EC_KEY *EC_KEY_dup(const EC_KEY *src);
786
787 /** Increases the internal reference count of a EC_KEY object.
788 * \param key EC_KEY object
789 * \return 1 on success and 0 if an error occurred.
790 */
791 int EC_KEY_up_ref(EC_KEY *key);
792
793 /** Returns the EC_GROUP object of a EC_KEY object
794 * \param key EC_KEY object
795 * \return the EC_GROUP object (possibly NULL).
796 */
797 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
798
799 /** Sets the EC_GROUP of a EC_KEY object.
800 * \param key EC_KEY object
801 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY
802 * object will use an own copy of the EC_GROUP).
803 * \return 1 on success and 0 if an error occurred.
804 */
805 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
806
807 /** Returns the private key of a EC_KEY object.
808 * \param key EC_KEY object
809 * \return a BIGNUM with the private key (possibly NULL).
810 */
811 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
812
813 /** Sets the private key of a EC_KEY object.
814 * \param key EC_KEY object
815 * \param prv BIGNUM with the private key (note: the EC_KEY object
816 * will use an own copy of the BIGNUM).
817 * \return 1 on success and 0 if an error occurred.
818 */
819 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
820
821 /** Returns the public key of a EC_KEY object.
822 * \param key the EC_KEY object
823 * \return a EC_POINT object with the public key (possibly NULL)
824 */
825 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
826
827 /** Sets the public key of a EC_KEY object.
828 * \param key EC_KEY object
829 * \param pub EC_POINT object with the public key (note: the EC_KEY object
830 * will use an own copy of the EC_POINT object).
831 * \return 1 on success and 0 if an error occurred.
832 */
833 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
834
835 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
836 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
837 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
838 void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
839 /* functions to set/get method specific data */
840 void *EC_KEY_get_key_method_data(EC_KEY *key,
841 void *(*dup_func) (void *),
842 void (*free_func) (void *),
843 void (*clear_free_func) (void *));
844 /** Sets the key method data of an EC_KEY object, if none has yet been set.
845 * \param key EC_KEY object
846 * \param data opaque data to install.
847 * \param dup_func a function that duplicates |data|.
848 * \param free_func a function that frees |data|.
849 * \param clear_free_func a function that wipes and frees |data|.
850 * \return the previously set data pointer, or NULL if |data| was inserted.
851 */
852 void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
853 void *(*dup_func) (void *),
854 void (*free_func) (void *),
855 void (*clear_free_func) (void *));
856 /* wrapper functions for the underlying EC_GROUP object */
857 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
858
859 /** Creates a table of pre-computed multiples of the generator to
860 * accelerate further EC_KEY operations.
861 * \param key EC_KEY object
862 * \param ctx BN_CTX object (optional)
863 * \return 1 on success and 0 if an error occurred.
864 */
865 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
866
867 /** Creates a new ec private (and optional a new public) key.
868 * \param key EC_KEY object
869 * \return 1 on success and 0 if an error occurred.
870 */
871 int EC_KEY_generate_key(EC_KEY *key);
872
873 /** Verifies that a private and/or public key is valid.
874 * \param key the EC_KEY object
875 * \return 1 on success and 0 otherwise.
876 */
877 int EC_KEY_check_key(const EC_KEY *key);
878
879 /** Sets a public key from affine coordindates performing
880 * neccessary NIST PKV tests.
881 * \param key the EC_KEY object
882 * \param x public key x coordinate
883 * \param y public key y coordinate
884 * \return 1 on success and 0 otherwise.
885 */
886 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
887 BIGNUM *y);
888
889 /********************************************************************/
890 /* de- and encoding functions for SEC1 ECPrivateKey */
891 /********************************************************************/
892
893 /** Decodes a private key from a memory buffer.
894 * \param key a pointer to a EC_KEY object which should be used (or NULL)
895 * \param in pointer to memory with the DER encoded private key
896 * \param len length of the DER encoded private key
897 * \return the decoded private key or NULL if an error occurred.
898 */
899 EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
900
901 /** Encodes a private key object and stores the result in a buffer.
902 * \param key the EC_KEY object to encode
903 * \param out the buffer for the result (if NULL the function returns number
904 * of bytes needed).
905 * \return 1 on success and 0 if an error occurred.
906 */
907 int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
908
909 /********************************************************************/
910 /* de- and encoding functions for EC parameters */
911 /********************************************************************/
912
913 /** Decodes ec parameter from a memory buffer.
914 * \param key a pointer to a EC_KEY object which should be used (or NULL)
915 * \param in pointer to memory with the DER encoded ec parameters
916 * \param len length of the DER encoded ec parameters
917 * \return a EC_KEY object with the decoded parameters or NULL if an error
918 * occurred.
919 */
920 EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
921
922 /** Encodes ec parameter and stores the result in a buffer.
923 * \param key the EC_KEY object with ec paramters to encode
924 * \param out the buffer for the result (if NULL the function returns number
925 * of bytes needed).
926 * \return 1 on success and 0 if an error occurred.
927 */
928 int i2d_ECParameters(EC_KEY *key, unsigned char **out);
929
930 /********************************************************************/
931 /* de- and encoding functions for EC public key */
932 /* (octet string, not DER -- hence 'o2i' and 'i2o') */
933 /********************************************************************/
934
935 /** Decodes a ec public key from a octet string.
936 * \param key a pointer to a EC_KEY object which should be used
937 * \param in memory buffer with the encoded public key
938 * \param len length of the encoded public key
939 * \return EC_KEY object with decoded public key or NULL if an error
940 * occurred.
941 */
942 EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len);
943
944 /** Encodes a ec public key in an octet string.
945 * \param key the EC_KEY object with the public key
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 i2o_ECPublicKey(EC_KEY *key, unsigned char **out);
951
952 # ifndef OPENSSL_NO_BIO
953 /** Prints out the ec parameters on human readable form.
954 * \param bp BIO object to which the information is printed
955 * \param key EC_KEY object
956 * \return 1 on success and 0 if an error occurred
957 */
958 int ECParameters_print(BIO *bp, const EC_KEY *key);
959
960 /** Prints out the contents of a EC_KEY object
961 * \param bp BIO object to which the information is printed
962 * \param key EC_KEY object
963 * \param off line offset
964 * \return 1 on success and 0 if an error occurred
965 */
966 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
967
968 # endif
969 # ifndef OPENSSL_NO_FP_API
970 /** Prints out the ec parameters on human readable form.
971 * \param fp file descriptor to which the information is printed
972 * \param key EC_KEY object
973 * \return 1 on success and 0 if an error occurred
974 */
975 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
976
977 /** Prints out the contents of a EC_KEY object
978 * \param fp file descriptor to which the information is printed
979 * \param key EC_KEY object
980 * \param off line offset
981 * \return 1 on success and 0 if an error occurred
982 */
983 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
984
985 # endif
986
987 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
988
989 # ifndef __cplusplus
990 # if defined(__SUNPRO_C)
991 # if __SUNPRO_C >= 0x520
992 # pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
993 # endif
994 # endif
995 # endif
996
997 # define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \
998 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
999 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1000 EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL)
1001
1002 # define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \
1003 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1004 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1005 EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL)
1006
1007 # define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \
1008 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1009 EVP_PKEY_OP_DERIVE, \
1010 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL)
1011
1012 # define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \
1013 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1014 EVP_PKEY_OP_DERIVE, \
1015 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL)
1016
1017 # define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \
1018 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1019 EVP_PKEY_OP_DERIVE, \
1020 EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL)
1021
1022 # define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \
1023 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1024 EVP_PKEY_OP_DERIVE, \
1025 EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL)
1026
1027 # define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \
1028 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1029 EVP_PKEY_OP_DERIVE, \
1030 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)md)
1031
1032 # define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \
1033 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1034 EVP_PKEY_OP_DERIVE, \
1035 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)pmd)
1036
1037 # define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \
1038 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1039 EVP_PKEY_OP_DERIVE, \
1040 EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL)
1041
1042 # define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \
1043 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1044 EVP_PKEY_OP_DERIVE, \
1045 EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, (void *)plen)
1046
1047 # define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
1048 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1049 EVP_PKEY_OP_DERIVE, \
1050 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)p)
1051
1052 # define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
1053 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1054 EVP_PKEY_OP_DERIVE, \
1055 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)p)
1056
1057 # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1)
1058 # define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2)
1059 # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3)
1060 # define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4)
1061 # define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5)
1062 # define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6)
1063 # define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7)
1064 # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8)
1065 # define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9)
1066 # define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10)
1067 /* KDF types */
1068 # define EVP_PKEY_ECDH_KDF_NONE 1
1069 # define EVP_PKEY_ECDH_KDF_X9_62 2
1070
1071 /* BEGIN ERROR CODES */
1072 /*
1073 * The following lines are auto generated by the script mkerr.pl. Any changes
1074 * made after this point may be overwritten when the script is next run.
1075 */
1076
1077 void ERR_load_EC_strings(void);
1078
1079 /* Error codes for the EC functions. */
1080
1081 /* Function codes. */
1082 # define EC_F_BN_TO_FELEM 224
1083 # define EC_F_COMPUTE_WNAF 143
1084 # define EC_F_D2I_ECPARAMETERS 144
1085 # define EC_F_D2I_ECPKPARAMETERS 145
1086 # define EC_F_D2I_ECPRIVATEKEY 146
1087 # define EC_F_DO_EC_KEY_PRINT 221
1088 # define EC_F_ECDH_CMS_DECRYPT 238
1089 # define EC_F_ECDH_CMS_SET_SHARED_INFO 239
1090 # define EC_F_ECKEY_PARAM2TYPE 223
1091 # define EC_F_ECKEY_PARAM_DECODE 212
1092 # define EC_F_ECKEY_PRIV_DECODE 213
1093 # define EC_F_ECKEY_PRIV_ENCODE 214
1094 # define EC_F_ECKEY_PUB_DECODE 215
1095 # define EC_F_ECKEY_PUB_ENCODE 216
1096 # define EC_F_ECKEY_TYPE2PARAM 220
1097 # define EC_F_ECPARAMETERS_PRINT 147
1098 # define EC_F_ECPARAMETERS_PRINT_FP 148
1099 # define EC_F_ECPKPARAMETERS_PRINT 149
1100 # define EC_F_ECPKPARAMETERS_PRINT_FP 150
1101 # define EC_F_ECP_NISTZ256_GET_AFFINE 240
1102 # define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE 243
1103 # define EC_F_ECP_NISTZ256_POINTS_MUL 241
1104 # define EC_F_ECP_NISTZ256_PRE_COMP_NEW 244
1105 # define EC_F_ECP_NISTZ256_SET_WORDS 245
1106 # define EC_F_ECP_NISTZ256_WINDOWED_MUL 242
1107 # define EC_F_ECP_NIST_MOD_192 203
1108 # define EC_F_ECP_NIST_MOD_224 204
1109 # define EC_F_ECP_NIST_MOD_256 205
1110 # define EC_F_ECP_NIST_MOD_521 206
1111 # define EC_F_EC_ASN1_GROUP2CURVE 153
1112 # define EC_F_EC_ASN1_GROUP2FIELDID 154
1113 # define EC_F_EC_ASN1_GROUP2PARAMETERS 155
1114 # define EC_F_EC_ASN1_GROUP2PKPARAMETERS 156
1115 # define EC_F_EC_ASN1_PARAMETERS2GROUP 157
1116 # define EC_F_EC_ASN1_PKPARAMETERS2GROUP 158
1117 # define EC_F_EC_EX_DATA_SET_DATA 211
1118 # define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY 208
1119 # define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT 159
1120 # define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE 195
1121 # define EC_F_EC_GF2M_SIMPLE_OCT2POINT 160
1122 # define EC_F_EC_GF2M_SIMPLE_POINT2OCT 161
1123 # define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
1124 # define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
1125 # define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES 164
1126 # define EC_F_EC_GFP_MONT_FIELD_DECODE 133
1127 # define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
1128 # define EC_F_EC_GFP_MONT_FIELD_MUL 131
1129 # define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE 209
1130 # define EC_F_EC_GFP_MONT_FIELD_SQR 132
1131 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE 189
1132 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE_GFP 135
1133 # define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE 225
1134 # define EC_F_EC_GFP_NISTP224_POINTS_MUL 228
1135 # define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
1136 # define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE 230
1137 # define EC_F_EC_GFP_NISTP256_POINTS_MUL 231
1138 # define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
1139 # define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE 233
1140 # define EC_F_EC_GFP_NISTP521_POINTS_MUL 234
1141 # define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
1142 # define EC_F_EC_GFP_NIST_FIELD_MUL 200
1143 # define EC_F_EC_GFP_NIST_FIELD_SQR 201
1144 # define EC_F_EC_GFP_NIST_GROUP_SET_CURVE 202
1145 # define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 165
1146 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE 166
1147 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP 100
1148 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 101
1149 # define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
1150 # define EC_F_EC_GFP_SIMPLE_OCT2POINT 103
1151 # define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
1152 # define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
1153 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES 167
1154 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
1155 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES 168
1156 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
1157 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES 169
1158 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
1159 # define EC_F_EC_GROUP_CHECK 170
1160 # define EC_F_EC_GROUP_CHECK_DISCRIMINANT 171
1161 # define EC_F_EC_GROUP_COPY 106
1162 # define EC_F_EC_GROUP_GET0_GENERATOR 139
1163 # define EC_F_EC_GROUP_GET_COFACTOR 140
1164 # define EC_F_EC_GROUP_GET_CURVE_GF2M 172
1165 # define EC_F_EC_GROUP_GET_CURVE_GFP 130
1166 # define EC_F_EC_GROUP_GET_DEGREE 173
1167 # define EC_F_EC_GROUP_GET_ORDER 141
1168 # define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS 193
1169 # define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS 194
1170 # define EC_F_EC_GROUP_NEW 108
1171 # define EC_F_EC_GROUP_NEW_BY_CURVE_NAME 174
1172 # define EC_F_EC_GROUP_NEW_FROM_DATA 175
1173 # define EC_F_EC_GROUP_PRECOMPUTE_MULT 142
1174 # define EC_F_EC_GROUP_SET_CURVE_GF2M 176
1175 # define EC_F_EC_GROUP_SET_CURVE_GFP 109
1176 # define EC_F_EC_GROUP_SET_EXTRA_DATA 110
1177 # define EC_F_EC_GROUP_SET_GENERATOR 111
1178 # define EC_F_EC_KEY_CHECK_KEY 177
1179 # define EC_F_EC_KEY_COPY 178
1180 # define EC_F_EC_KEY_GENERATE_KEY 179
1181 # define EC_F_EC_KEY_NEW 182
1182 # define EC_F_EC_KEY_PRINT 180
1183 # define EC_F_EC_KEY_PRINT_FP 181
1184 # define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES 229
1185 # define EC_F_EC_POINTS_MAKE_AFFINE 136
1186 # define EC_F_EC_POINT_ADD 112
1187 # define EC_F_EC_POINT_CMP 113
1188 # define EC_F_EC_POINT_COPY 114
1189 # define EC_F_EC_POINT_DBL 115
1190 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M 183
1191 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
1192 # define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
1193 # define EC_F_EC_POINT_INVERT 210
1194 # define EC_F_EC_POINT_IS_AT_INFINITY 118
1195 # define EC_F_EC_POINT_IS_ON_CURVE 119
1196 # define EC_F_EC_POINT_MAKE_AFFINE 120
1197 # define EC_F_EC_POINT_MUL 184
1198 # define EC_F_EC_POINT_NEW 121
1199 # define EC_F_EC_POINT_OCT2POINT 122
1200 # define EC_F_EC_POINT_POINT2OCT 123
1201 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M 185
1202 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
1203 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M 186
1204 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
1205 # define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
1206 # define EC_F_EC_POINT_SET_TO_INFINITY 127
1207 # define EC_F_EC_PRE_COMP_DUP 207
1208 # define EC_F_EC_PRE_COMP_NEW 196
1209 # define EC_F_EC_WNAF_MUL 187
1210 # define EC_F_EC_WNAF_PRECOMPUTE_MULT 188
1211 # define EC_F_I2D_ECPARAMETERS 190
1212 # define EC_F_I2D_ECPKPARAMETERS 191
1213 # define EC_F_I2D_ECPRIVATEKEY 192
1214 # define EC_F_I2O_ECPUBLICKEY 151
1215 # define EC_F_NISTP224_PRE_COMP_NEW 227
1216 # define EC_F_NISTP256_PRE_COMP_NEW 236
1217 # define EC_F_NISTP521_PRE_COMP_NEW 237
1218 # define EC_F_O2I_ECPUBLICKEY 152
1219 # define EC_F_OLD_EC_PRIV_DECODE 222
1220 # define EC_F_PKEY_EC_CTRL 197
1221 # define EC_F_PKEY_EC_CTRL_STR 198
1222 # define EC_F_PKEY_EC_DERIVE 217
1223 # define EC_F_PKEY_EC_KEYGEN 199
1224 # define EC_F_PKEY_EC_PARAMGEN 219
1225 # define EC_F_PKEY_EC_SIGN 218
1226
1227 /* Reason codes. */
1228 # define EC_R_ASN1_ERROR 115
1229 # define EC_R_ASN1_UNKNOWN_FIELD 116
1230 # define EC_R_BIGNUM_OUT_OF_RANGE 144
1231 # define EC_R_BUFFER_TOO_SMALL 100
1232 # define EC_R_COORDINATES_OUT_OF_RANGE 146
1233 # define EC_R_D2I_ECPKPARAMETERS_FAILURE 117
1234 # define EC_R_DECODE_ERROR 142
1235 # define EC_R_DISCRIMINANT_IS_ZERO 118
1236 # define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 119
1237 # define EC_R_FIELD_TOO_LARGE 143
1238 # define EC_R_GF2M_NOT_SUPPORTED 147
1239 # define EC_R_GROUP2PKPARAMETERS_FAILURE 120
1240 # define EC_R_I2D_ECPKPARAMETERS_FAILURE 121
1241 # define EC_R_INCOMPATIBLE_OBJECTS 101
1242 # define EC_R_INVALID_ARGUMENT 112
1243 # define EC_R_INVALID_COMPRESSED_POINT 110
1244 # define EC_R_INVALID_COMPRESSION_BIT 109
1245 # define EC_R_INVALID_CURVE 141
1246 # define EC_R_INVALID_DIGEST 151
1247 # define EC_R_INVALID_DIGEST_TYPE 138
1248 # define EC_R_INVALID_ENCODING 102
1249 # define EC_R_INVALID_FIELD 103
1250 # define EC_R_INVALID_FORM 104
1251 # define EC_R_INVALID_GROUP_ORDER 122
1252 # define EC_R_INVALID_PENTANOMIAL_BASIS 132
1253 # define EC_R_INVALID_PRIVATE_KEY 123
1254 # define EC_R_INVALID_TRINOMIAL_BASIS 137
1255 # define EC_R_KDF_PARAMETER_ERROR 148
1256 # define EC_R_KEYS_NOT_SET 140
1257 # define EC_R_MISSING_PARAMETERS 124
1258 # define EC_R_MISSING_PRIVATE_KEY 125
1259 # define EC_R_NOT_A_NIST_PRIME 135
1260 # define EC_R_NOT_A_SUPPORTED_NIST_PRIME 136
1261 # define EC_R_NOT_IMPLEMENTED 126
1262 # define EC_R_NOT_INITIALIZED 111
1263 # define EC_R_NO_FIELD_MOD 133
1264 # define EC_R_NO_PARAMETERS_SET 139
1265 # define EC_R_PASSED_NULL_PARAMETER 134
1266 # define EC_R_PEER_KEY_ERROR 149
1267 # define EC_R_PKPARAMETERS2GROUP_FAILURE 127
1268 # define EC_R_POINT_AT_INFINITY 106
1269 # define EC_R_POINT_IS_NOT_ON_CURVE 107
1270 # define EC_R_SHARED_INFO_ERROR 150
1271 # define EC_R_SLOT_FULL 108
1272 # define EC_R_UNDEFINED_GENERATOR 113
1273 # define EC_R_UNDEFINED_ORDER 128
1274 # define EC_R_UNKNOWN_COFACTOR 152
1275 # define EC_R_UNKNOWN_GROUP 129
1276 # define EC_R_UNKNOWN_ORDER 114
1277 # define EC_R_UNSUPPORTED_FIELD 131
1278 # define EC_R_WRONG_CURVE_PARAMETERS 145
1279 # define EC_R_WRONG_ORDER 130
1280
1281 # ifdef __cplusplus
1282 }
1283 # endif
1284 #endif
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