1 /* crypto/ec/ec_lib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
58 #include <openssl/err.h>
59 #include <openssl/opensslv.h>
63 static const char EC_version
[] = "EC" OPENSSL_VERSION_PTEXT
;
66 /* functions for EC_GROUP objects */
68 EC_GROUP
*EC_GROUP_new(const EC_METHOD
*meth
)
74 ECerr(EC_F_EC_GROUP_NEW
, ERR_R_PASSED_NULL_PARAMETER
);
77 if (meth
->group_init
== 0)
79 ECerr(EC_F_EC_GROUP_NEW
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
83 ret
= OPENSSL_malloc(sizeof *ret
);
86 ECerr(EC_F_EC_GROUP_NEW
, ERR_R_MALLOC_FAILURE
);
92 ret
->extra_data
= NULL
;
93 ret
->extra_data_dup_func
= 0;
94 ret
->extra_data_free_func
= 0;
95 ret
->extra_data_clear_free_func
= 0;
97 ret
->generator
= NULL
;
99 BN_init(&ret
->cofactor
);
103 if (!meth
->group_init(ret
))
113 void EC_GROUP_free(EC_GROUP
*group
)
117 if (group
->meth
->group_finish
!= 0)
118 group
->meth
->group_finish(group
);
120 EC_GROUP_free_extra_data(group
);
122 if (group
->generator
!= NULL
)
123 EC_POINT_free(group
->generator
);
124 BN_free(&group
->order
);
125 BN_free(&group
->cofactor
);
131 void EC_GROUP_clear_free(EC_GROUP
*group
)
135 if (group
->meth
->group_clear_finish
!= 0)
136 group
->meth
->group_clear_finish(group
);
137 else if (group
->meth
!= NULL
&& group
->meth
->group_finish
!= 0)
138 group
->meth
->group_finish(group
);
140 EC_GROUP_clear_free_extra_data(group
);
142 if (group
->generator
!= NULL
)
143 EC_POINT_clear_free(group
->generator
);
144 BN_clear_free(&group
->order
);
145 BN_clear_free(&group
->cofactor
);
147 memset(group
, 0, sizeof *group
);
152 int EC_GROUP_copy(EC_GROUP
*dest
, const EC_GROUP
*src
)
154 if (dest
->meth
->group_copy
== 0)
156 ECerr(EC_F_EC_GROUP_COPY
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
159 if (dest
->meth
!= src
->meth
)
161 ECerr(EC_F_EC_GROUP_COPY
, EC_R_INCOMPATIBLE_OBJECTS
);
167 EC_GROUP_clear_free_extra_data(dest
);
168 if (src
->extra_data_dup_func
)
170 if (src
->extra_data
!= NULL
)
172 dest
->extra_data
= src
->extra_data_dup_func(src
->extra_data
);
173 if (dest
->extra_data
== NULL
)
177 dest
->extra_data_dup_func
= src
->extra_data_dup_func
;
178 dest
->extra_data_free_func
= src
->extra_data_free_func
;
179 dest
->extra_data_clear_free_func
= src
->extra_data_clear_free_func
;
182 if (src
->generator
!= NULL
)
184 if (dest
->generator
== NULL
)
186 dest
->generator
= EC_POINT_new(dest
);
187 if (dest
->generator
== NULL
) return 0;
189 if (!EC_POINT_copy(dest
->generator
, src
->generator
)) return 0;
193 /* src->generator == NULL */
194 if (dest
->generator
!= NULL
)
196 EC_POINT_clear_free(dest
->generator
);
197 dest
->generator
= NULL
;
201 if (!BN_copy(&dest
->order
, &src
->order
)) return 0;
202 if (!BN_copy(&dest
->cofactor
, &src
->cofactor
)) return 0;
204 dest
->nid
= src
->nid
;
206 return dest
->meth
->group_copy(dest
, src
);
210 const EC_METHOD
*EC_GROUP_method_of(const EC_GROUP
*group
)
216 int EC_GROUP_set_generator(EC_GROUP
*group
, const EC_POINT
*generator
, const BIGNUM
*order
, const BIGNUM
*cofactor
)
218 if (generator
== NULL
)
220 ECerr(EC_F_EC_GROUP_SET_GENERATOR
, ERR_R_PASSED_NULL_PARAMETER
);
224 if (group
->generator
== NULL
)
226 group
->generator
= EC_POINT_new(group
);
227 if (group
->generator
== NULL
) return 0;
229 if (!EC_POINT_copy(group
->generator
, generator
)) return 0;
232 { if (!BN_copy(&group
->order
, order
)) return 0; }
234 { if (!BN_zero(&group
->order
)) return 0; }
236 if (cofactor
!= NULL
)
237 { if (!BN_copy(&group
->cofactor
, cofactor
)) return 0; }
239 { if (!BN_zero(&group
->cofactor
)) return 0; }
245 EC_POINT
*EC_GROUP_get0_generator(const EC_GROUP
*group
)
247 return group
->generator
;
251 int EC_GROUP_get_order(const EC_GROUP
*group
, BIGNUM
*order
, BN_CTX
*ctx
)
253 if (!BN_copy(order
, &group
->order
))
256 return !BN_is_zero(order
);
260 int EC_GROUP_get_cofactor(const EC_GROUP
*group
, BIGNUM
*cofactor
, BN_CTX
*ctx
)
262 if (!BN_copy(cofactor
, &group
->cofactor
))
265 return !BN_is_zero(&group
->cofactor
);
269 void EC_GROUP_set_nid(EC_GROUP
*group
, int nid
)
275 int EC_GROUP_get_nid(const EC_GROUP
*group
)
281 int EC_GROUP_set_curve_GFp(EC_GROUP
*group
, const BIGNUM
*p
, const BIGNUM
*a
, const BIGNUM
*b
, BN_CTX
*ctx
)
283 if (group
->meth
->group_set_curve_GFp
== 0)
285 ECerr(EC_F_EC_GROUP_SET_CURVE_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
288 return group
->meth
->group_set_curve_GFp(group
, p
, a
, b
, ctx
);
292 int EC_GROUP_get_curve_GFp(const EC_GROUP
*group
, BIGNUM
*p
, BIGNUM
*a
, BIGNUM
*b
, BN_CTX
*ctx
)
294 if (group
->meth
->group_get_curve_GFp
== 0)
296 ECerr(EC_F_EC_GROUP_GET_CURVE_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
299 return group
->meth
->group_get_curve_GFp(group
, p
, a
, b
, ctx
);
303 int EC_GROUP_check_discriminant(const EC_GROUP
*group
, BN_CTX
*ctx
)
305 if (group
->meth
->group_check_discriminant
== 0)
307 ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
310 return group
->meth
->group_check_discriminant(group
, ctx
);
314 /* this has 'package' visibility */
315 int EC_GROUP_set_extra_data(EC_GROUP
*group
, void *extra_data
, void *(*extra_data_dup_func
)(void *),
316 void (*extra_data_free_func
)(void *), void (*extra_data_clear_free_func
)(void *))
318 if ((group
->extra_data
!= NULL
)
319 || (group
->extra_data_dup_func
!= 0)
320 || (group
->extra_data_free_func
!= 0)
321 || (group
->extra_data_clear_free_func
!= 0))
323 ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA
, EC_R_SLOT_FULL
);
327 group
->extra_data
= extra_data
;
328 group
->extra_data_dup_func
= extra_data_dup_func
;
329 group
->extra_data_free_func
= extra_data_free_func
;
330 group
->extra_data_clear_free_func
= extra_data_clear_free_func
;
335 /* this has 'package' visibility */
336 void *EC_GROUP_get_extra_data(const EC_GROUP
*group
, void *(*extra_data_dup_func
)(void *),
337 void (*extra_data_free_func
)(void *), void (*extra_data_clear_free_func
)(void *))
339 if ((group
->extra_data_dup_func
!= extra_data_dup_func
)
340 || (group
->extra_data_free_func
!= extra_data_free_func
)
341 || (group
->extra_data_clear_free_func
!= extra_data_clear_free_func
))
343 ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA
, EC_R_NO_SUCH_EXTRA_DATA
);
347 return group
->extra_data
;
351 /* this has 'package' visibility */
352 void EC_GROUP_free_extra_data(EC_GROUP
*group
)
354 if (group
->extra_data_free_func
)
355 group
->extra_data_free_func(group
->extra_data
);
356 group
->extra_data
= NULL
;
357 group
->extra_data_dup_func
= 0;
358 group
->extra_data_free_func
= 0;
359 group
->extra_data_clear_free_func
= 0;
363 /* this has 'package' visibility */
364 void EC_GROUP_clear_free_extra_data(EC_GROUP
*group
)
366 if (group
->extra_data_clear_free_func
)
367 group
->extra_data_clear_free_func(group
->extra_data
);
368 else if (group
->extra_data_free_func
)
369 group
->extra_data_free_func(group
->extra_data
);
370 group
->extra_data
= NULL
;
371 group
->extra_data_dup_func
= 0;
372 group
->extra_data_free_func
= 0;
373 group
->extra_data_clear_free_func
= 0;
377 /* functions for EC_POINT objects */
379 EC_POINT
*EC_POINT_new(const EC_GROUP
*group
)
385 ECerr(EC_F_EC_POINT_NEW
, ERR_R_PASSED_NULL_PARAMETER
);
388 if (group
->meth
->point_init
== 0)
390 ECerr(EC_F_EC_POINT_NEW
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
394 ret
= OPENSSL_malloc(sizeof *ret
);
397 ECerr(EC_F_EC_POINT_NEW
, ERR_R_MALLOC_FAILURE
);
401 ret
->meth
= group
->meth
;
403 if (!ret
->meth
->point_init(ret
))
413 void EC_POINT_free(EC_POINT
*point
)
417 if (point
->meth
->point_finish
!= 0)
418 point
->meth
->point_finish(point
);
423 void EC_POINT_clear_free(EC_POINT
*point
)
427 if (point
->meth
->point_clear_finish
!= 0)
428 point
->meth
->point_clear_finish(point
);
429 else if (point
->meth
!= NULL
&& point
->meth
->point_finish
!= 0)
430 point
->meth
->point_finish(point
);
431 memset(point
, 0, sizeof *point
);
436 int EC_POINT_copy(EC_POINT
*dest
, const EC_POINT
*src
)
438 if (dest
->meth
->point_copy
== 0)
440 ECerr(EC_F_EC_POINT_COPY
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
443 if (dest
->meth
!= src
->meth
)
445 ECerr(EC_F_EC_POINT_COPY
, EC_R_INCOMPATIBLE_OBJECTS
);
450 return dest
->meth
->point_copy(dest
, src
);
454 const EC_METHOD
*EC_POINT_method_of(const EC_POINT
*point
)
460 int EC_POINT_set_to_infinity(const EC_GROUP
*group
, EC_POINT
*point
)
462 if (group
->meth
->point_set_to_infinity
== 0)
464 ECerr(EC_F_EC_POINT_SET_TO_INFINITY
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
467 if (group
->meth
!= point
->meth
)
469 ECerr(EC_F_EC_POINT_SET_TO_INFINITY
, EC_R_INCOMPATIBLE_OBJECTS
);
472 return group
->meth
->point_set_to_infinity(group
, point
);
476 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP
*group
, EC_POINT
*point
,
477 const BIGNUM
*x
, const BIGNUM
*y
, const BIGNUM
*z
, BN_CTX
*ctx
)
479 if (group
->meth
->point_set_Jprojective_coordinates_GFp
== 0)
481 ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
484 if (group
->meth
!= point
->meth
)
486 ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP
, EC_R_INCOMPATIBLE_OBJECTS
);
489 return group
->meth
->point_set_Jprojective_coordinates_GFp(group
, point
, x
, y
, z
, ctx
);
493 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP
*group
, const EC_POINT
*point
,
494 BIGNUM
*x
, BIGNUM
*y
, BIGNUM
*z
, BN_CTX
*ctx
)
496 if (group
->meth
->point_get_Jprojective_coordinates_GFp
== 0)
498 ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
501 if (group
->meth
!= point
->meth
)
503 ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP
, EC_R_INCOMPATIBLE_OBJECTS
);
506 return group
->meth
->point_get_Jprojective_coordinates_GFp(group
, point
, x
, y
, z
, ctx
);
510 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP
*group
, EC_POINT
*point
,
511 const BIGNUM
*x
, const BIGNUM
*y
, BN_CTX
*ctx
)
513 if (group
->meth
->point_set_affine_coordinates_GFp
== 0)
515 ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
518 if (group
->meth
!= point
->meth
)
520 ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP
, EC_R_INCOMPATIBLE_OBJECTS
);
523 return group
->meth
->point_set_affine_coordinates_GFp(group
, point
, x
, y
, ctx
);
527 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP
*group
, const EC_POINT
*point
,
528 BIGNUM
*x
, BIGNUM
*y
, BN_CTX
*ctx
)
530 if (group
->meth
->point_get_affine_coordinates_GFp
== 0)
532 ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
535 if (group
->meth
!= point
->meth
)
537 ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP
, EC_R_INCOMPATIBLE_OBJECTS
);
540 return group
->meth
->point_get_affine_coordinates_GFp(group
, point
, x
, y
, ctx
);
544 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP
*group
, EC_POINT
*point
,
545 const BIGNUM
*x
, int y_bit
, BN_CTX
*ctx
)
547 if (group
->meth
->point_set_compressed_coordinates_GFp
== 0)
549 ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
552 if (group
->meth
!= point
->meth
)
554 ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP
, EC_R_INCOMPATIBLE_OBJECTS
);
557 return group
->meth
->point_set_compressed_coordinates_GFp(group
, point
, x
, y_bit
, ctx
);
561 size_t EC_POINT_point2oct(const EC_GROUP
*group
, const EC_POINT
*point
, point_conversion_form_t form
,
562 unsigned char *buf
, size_t len
, BN_CTX
*ctx
)
564 if (group
->meth
->point2oct
== 0)
566 ECerr(EC_F_EC_POINT_POINT2OCT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
569 if (group
->meth
!= point
->meth
)
571 ECerr(EC_F_EC_POINT_POINT2OCT
, EC_R_INCOMPATIBLE_OBJECTS
);
574 return group
->meth
->point2oct(group
, point
, form
, buf
, len
, ctx
);
578 int EC_POINT_oct2point(const EC_GROUP
*group
, EC_POINT
*point
,
579 const unsigned char *buf
, size_t len
, BN_CTX
*ctx
)
581 if (group
->meth
->oct2point
== 0)
583 ECerr(EC_F_EC_POINT_OCT2POINT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
586 if (group
->meth
!= point
->meth
)
588 ECerr(EC_F_EC_POINT_OCT2POINT
, EC_R_INCOMPATIBLE_OBJECTS
);
591 return group
->meth
->oct2point(group
, point
, buf
, len
, ctx
);
595 int EC_POINT_add(const EC_GROUP
*group
, EC_POINT
*r
, const EC_POINT
*a
, const EC_POINT
*b
, BN_CTX
*ctx
)
597 if (group
->meth
->add
== 0)
599 ECerr(EC_F_EC_POINT_ADD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
602 if ((group
->meth
!= r
->meth
) || (r
->meth
!= a
->meth
) || (a
->meth
!= b
->meth
))
604 ECerr(EC_F_EC_POINT_ADD
, EC_R_INCOMPATIBLE_OBJECTS
);
607 return group
->meth
->add(group
, r
, a
, b
, ctx
);
611 int EC_POINT_dbl(const EC_GROUP
*group
, EC_POINT
*r
, const EC_POINT
*a
, BN_CTX
*ctx
)
613 if (group
->meth
->dbl
== 0)
615 ECerr(EC_F_EC_POINT_DBL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
618 if ((group
->meth
!= r
->meth
) || (r
->meth
!= a
->meth
))
620 ECerr(EC_F_EC_POINT_DBL
, EC_R_INCOMPATIBLE_OBJECTS
);
623 return group
->meth
->dbl(group
, r
, a
, ctx
);
627 int EC_POINT_invert(const EC_GROUP
*group
, EC_POINT
*a
, BN_CTX
*ctx
)
629 if (group
->meth
->dbl
== 0)
631 ECerr(EC_F_EC_POINT_DBL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
634 if (group
->meth
!= a
->meth
)
636 ECerr(EC_F_EC_POINT_DBL
, EC_R_INCOMPATIBLE_OBJECTS
);
639 return group
->meth
->invert(group
, a
, ctx
);
643 int EC_POINT_is_at_infinity(const EC_GROUP
*group
, const EC_POINT
*point
)
645 if (group
->meth
->is_at_infinity
== 0)
647 ECerr(EC_F_EC_POINT_IS_AT_INFINITY
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
650 if (group
->meth
!= point
->meth
)
652 ECerr(EC_F_EC_POINT_IS_AT_INFINITY
, EC_R_INCOMPATIBLE_OBJECTS
);
655 return group
->meth
->is_at_infinity(group
, point
);
659 int EC_POINT_is_on_curve(const EC_GROUP
*group
, const EC_POINT
*point
, BN_CTX
*ctx
)
661 if (group
->meth
->is_on_curve
== 0)
663 ECerr(EC_F_EC_POINT_IS_ON_CURVE
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
666 if (group
->meth
!= point
->meth
)
668 ECerr(EC_F_EC_POINT_IS_ON_CURVE
, EC_R_INCOMPATIBLE_OBJECTS
);
671 return group
->meth
->is_on_curve(group
, point
, ctx
);
675 int EC_POINT_cmp(const EC_GROUP
*group
, const EC_POINT
*a
, const EC_POINT
*b
, BN_CTX
*ctx
)
677 if (group
->meth
->point_cmp
== 0)
679 ECerr(EC_F_EC_POINT_CMP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
682 if ((group
->meth
!= a
->meth
) || (a
->meth
!= b
->meth
))
684 ECerr(EC_F_EC_POINT_CMP
, EC_R_INCOMPATIBLE_OBJECTS
);
687 return group
->meth
->point_cmp(group
, a
, b
, ctx
);
691 int EC_POINT_make_affine(const EC_GROUP
*group
, EC_POINT
*point
, BN_CTX
*ctx
)
693 if (group
->meth
->make_affine
== 0)
695 ECerr(EC_F_EC_POINT_MAKE_AFFINE
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
698 if (group
->meth
!= point
->meth
)
700 ECerr(EC_F_EC_POINT_MAKE_AFFINE
, EC_R_INCOMPATIBLE_OBJECTS
);
703 return group
->meth
->make_affine(group
, point
, ctx
);
707 int EC_POINTs_make_affine(const EC_GROUP
*group
, size_t num
, EC_POINT
*points
[], BN_CTX
*ctx
)
711 if (group
->meth
->points_make_affine
== 0)
713 ECerr(EC_F_EC_POINTS_MAKE_AFFINE
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
716 for (i
= 0; i
< num
; i
++)
718 if (group
->meth
!= points
[i
]->meth
)
720 ECerr(EC_F_EC_POINTS_MAKE_AFFINE
, EC_R_INCOMPATIBLE_OBJECTS
);
724 return group
->meth
->points_make_affine(group
, num
, points
, ctx
);