crypto/ec/ec_asn1.c

66 int EC_GROUP_get_basis_type(const EC_GROUP *group)
70 	if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
75 	while (group->poly[i] != 0)
87 int EC_GROUP_get_trinomial_basis(const EC_GROUP *group, unsigned int *k)
89 	if (group == NULL)
92 	if (EC_GROUP_method_of(group)->group_set_curve != ec_GF2m_simple_group_set_curve
93 	    || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] == 0)))
100 		*k = group->poly[1];
105 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1,
108 	if (group == NULL)
111 	if (EC_GROUP_method_of(group)->group_set_curve != ec_GF2m_simple_group_set_curve
112 	    || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] != 0) && (group->poly[3] != 0) && (group->poly[4] == 0)))
119 		*k1 = group->poly[3];
121 		*k2 = group->poly[2];
123 		*k3 = group->poly[1];
299 static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field)
304 	if (group == NULL || field == NULL)
313 	nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
329 		if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL))
356 		char_two->m = (long)EC_GROUP_get_degree(group);
358 		field_type = EC_GROUP_get_basis_type(group);
376 			if (!EC_GROUP_get_trinomial_basis(group, &k))
396 			if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3))
430 static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve)
439 	if (!group || !curve || !curve->a || !curve->b)
448 	nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
453 		if (!EC_GROUP_get_curve_GFp(group, NULL, tmp_1, tmp_2, NULL))
461 		if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL))
524 	if (group->seed)
532 		if (!ASN1_BIT_STRING_set(curve->seed, group->seed,
533 		                         (int)group->seed_len))
561 static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group,
594 	if (!ec_asn1_group2fieldid(group, ret->fieldID))
601 	if (!ec_asn1_group2curve(group, ret->curve))
608 	if ((point = EC_GROUP_get0_generator(group)) == NULL)
614 	form = EC_GROUP_get_point_conversion_form(group);
616 	len = EC_POINT_point2oct(group, point, form, NULL, len, NULL);
627 	if (!EC_POINT_point2oct(group, point, form, buffer, len, NULL))
644 	if (!EC_GROUP_get_order(group, tmp, NULL))
657 	if (EC_GROUP_get_cofactor(group, tmp, NULL))
682 ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *group,
705 	if (EC_GROUP_get_asn1_flag(group))
710 		tmp = EC_GROUP_get_curve_name(group);
726 		     group, NULL)) == NULL)
1053 	EC_GROUP	*group  = NULL;
1063 	if ((group = ec_asn1_pkparameters2group(params)) == NULL)
1073 		*a = group;
1076 	return(group);
1135 		if (ret->group)
1136 			EC_GROUP_clear_free(ret->group);
1137 		ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
1140 	if (ret->group == NULL)
1175 		ret->pub_key = EC_POINT_new(ret->group);
1185 		if (!EC_POINT_oct2point(ret->group, ret->pub_key,
1215 	if (a == NULL || a->group == NULL || a->priv_key == NULL)
1255 			a->group, priv_key->parameters)) == NULL)
1272 		tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
1287 		if (!EC_POINT_point2oct(a->group, a->pub_key,
1323 	return i2d_ECPKParameters(a->group, out);
1349 	if (!d2i_ECPKParameters(&ret->group, in, len))
1362 	if (a == NULL || (*a) == NULL || (*a)->group == NULL)
1371 		(ret->pub_key = EC_POINT_new(ret->group)) == NULL)
1376 	if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL))
1398         buf_len = EC_POINT_point2oct(a->group, a->pub_key,
1414         if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form,