crypto/ec/ec_lib.c

117 void EC_GROUP_free(EC_GROUP *group)
119     if (!group)
122     if (group->meth->group_finish != 0)
123         group->meth->group_finish(group);
125     EC_EX_DATA_free_all_data(&group->extra_data);
127     if (group->generator != NULL)
128         EC_POINT_free(group->generator);
129     BN_free(&group->order);
130     BN_free(&group->cofactor);
132     if (group->seed)
133         OPENSSL_free(group->seed);
135     OPENSSL_free(group);
138 void EC_GROUP_clear_free(EC_GROUP *group)
140     if (!group)
143     if (group->meth->group_clear_finish != 0)
144         group->meth->group_clear_finish(group);
145     else if (group->meth->group_finish != 0)
146         group->meth->group_finish(group);
148     EC_EX_DATA_clear_free_all_data(&group->extra_data);
150     if (group->generator != NULL)
151         EC_POINT_clear_free(group->generator);
152     BN_clear_free(&group->order);
153     BN_clear_free(&group->cofactor);
155     if (group->seed) {
156         OPENSSL_cleanse(group->seed, group->seed_len);
157         OPENSSL_free(group->seed);
160     OPENSSL_cleanse(group, sizeof *group);
161     OPENSSL_free(group);
260 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group)
262     return group->meth;
270 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
278     if (group->generator == NULL) {
279         group->generator = EC_POINT_new(group);
280         if (group->generator == NULL)
283     if (!EC_POINT_copy(group->generator, generator))
287         if (!BN_copy(&group->order, order))
290         BN_zero(&group->order);
293         if (!BN_copy(&group->cofactor, cofactor))
296         BN_zero(&group->cofactor);
301 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group)
303     return group->generator;
306 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx)
308     if (!BN_copy(order, &group->order))
314 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
317     if (!BN_copy(cofactor, &group->cofactor))
320     return !BN_is_zero(&group->cofactor);
323 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid)
325     group->curve_name = nid;
328 int EC_GROUP_get_curve_name(const EC_GROUP *group)
330     return group->curve_name;
333 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag)
335     group->asn1_flag = flag;
338 int EC_GROUP_get_asn1_flag(const EC_GROUP *group)
340     return group->asn1_flag;
343 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
346     group->asn1_form = form;
350                                                            *group)
352     return group->asn1_form;
355 size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len)
357     if (group->seed) {
358         OPENSSL_free(group->seed);
359         group->seed = NULL;
360         group->seed_len = 0;
366     if ((group->seed = OPENSSL_malloc(len)) == NULL)
368     memcpy(group->seed, p, len);
369     group->seed_len = len;
374 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group)
376     return group->seed;
379 size_t EC_GROUP_get_seed_len(const EC_GROUP *group)
381     return group->seed_len;
384 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
387     if (group->meth->group_set_curve == 0) {
391     return group->meth->group_set_curve(group, p, a, b, ctx);
394 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
397     if (group->meth->group_get_curve == 0) {
401     return group->meth->group_get_curve(group, p, a, b, ctx);
405 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
408     if (group->meth->group_set_curve == 0) {
413     return group->meth->group_set_curve(group, p, a, b, ctx);
416 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
419     if (group->meth->group_get_curve == 0) {
424     return group->meth->group_get_curve(group, p, a, b, ctx);
428 int EC_GROUP_get_degree(const EC_GROUP *group)
430     if (group->meth->group_get_degree == 0) {
434     return group->meth->group_get_degree(group);
437 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx)
439     if (group->meth->group_check_discriminant == 0) {
444     return group->meth->group_check_discriminant(group, ctx);
666 EC_POINT *EC_POINT_new(const EC_GROUP *group)
670     if (group == NULL) {
674     if (group->meth->point_init == 0) {
685     ret->meth = group->meth;
733 EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group)
741     t = EC_POINT_new(group);
757 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point)
759     if (group->meth->point_set_to_infinity == 0) {
764     if (group->meth != point->meth) {
768     return group->meth->point_set_to_infinity(group, point);
771 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
776     if (group->meth->point_set_Jprojective_coordinates_GFp == 0) {
781     if (group->meth != point->meth) {
786     return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x,
790 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
795     if (group->meth->point_get_Jprojective_coordinates_GFp == 0) {
800     if (group->meth != point->meth) {
805     return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x,
809 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group,
813     if (group->meth->point_set_affine_coordinates == 0) {
818     if (group->meth != point->meth) {
823     return group->meth->point_set_affine_coordinates(group, point, x, y, ctx);
827 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group,
831     if (group->meth->point_set_affine_coordinates == 0) {
836     if (group->meth != point->meth) {
841     return group->meth->point_set_affine_coordinates(group, point, x, y, ctx);
845 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
849     if (group->meth->point_get_affine_coordinates == 0) {
854     if (group->meth != point->meth) {
859     return group->meth->point_get_affine_coordinates(group, point, x, y, ctx);
863 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
867     if (group->meth->point_get_affine_coordinates == 0) {
872     if (group->meth != point->meth) {
877     return group->meth->point_get_affine_coordinates(group, point, x, y, ctx);
881 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
884     if (group->meth->add == 0) {
888     if ((group->meth != r->meth) || (r->meth != a->meth)
893     return group->meth->add(group, r, a, b, ctx);
896 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
899     if (group->meth->dbl == 0) {
903     if ((group->meth != r->meth) || (r->meth != a->meth)) {
907     return group->meth->dbl(group, r, a, ctx);
910 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx)
912     if (group->meth->invert == 0) {
916     if (group->meth != a->meth) {
920     return group->meth->invert(group, a, ctx);
923 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point)
925     if (group->meth->is_at_infinity == 0) {
930     if (group->meth != point->meth) {
934     return group->meth->is_at_infinity(group, point);
944 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
947     if (group->meth->is_on_curve == 0) {
951     if (group->meth != point->meth) {
955     return group->meth->is_on_curve(group, point, ctx);
958 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
961     if (group->meth->point_cmp == 0) {
965     if ((group->meth != a->meth) || (a->meth != b->meth)) {
969     return group->meth->point_cmp(group, a, b, ctx);
972 int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx)
974     if (group->meth->make_affine == 0) {
978     if (group->meth != point->meth) {
982     return group->meth->make_affine(group, point, ctx);
985 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
990     if (group->meth->points_make_affine == 0) {
995         if (group->meth != points[i]->meth) {
1000     return group->meth->points_make_affine(group, num, points, ctx);
1004  * Functions for point multiplication. If group->meth->mul is 0, we use the
1009 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
1013     if (group->meth->mul == 0)
1015         return ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);
1017     return group->meth->mul(group, r, scalar, num, points, scalars, ctx);
1020 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar,
1031     return EC_POINTs_mul(group, r, g_scalar,
1036 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx)
1038     if (group->meth->mul == 0)
1040         return ec_wNAF_precompute_mult(group, ctx);
1042     if (group->meth->precompute_mult != 0)
1043         return group->meth->precompute_mult(group, ctx);
1048 int EC_GROUP_have_precompute_mult(const EC_GROUP *group)
1050     if (group->meth->mul == 0)
1052         return ec_wNAF_have_precompute_mult(group);
1054     if (group->meth->have_precompute_mult != 0)
1055         return group->meth->have_precompute_mult(group);