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_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
94 	    || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] == 0)))
101 		*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_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
113 	    || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] != 0) && (group->poly[3] != 0) && (group->poly[4] == 0)))
120 		*k1 = group->poly[3];
122 		*k2 = group->poly[2];
124 		*k3 = group->poly[1];
300 static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field)
305 	if (group == NULL || field == NULL)
314 	nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
330 		if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL))
363 		char_two->m = (long)EC_GROUP_get_degree(group);
365 		field_type = EC_GROUP_get_basis_type(group);
383 			if (!EC_GROUP_get_trinomial_basis(group, &k))
403 			if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3))
438 static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve)
447 	if (!group || !curve || !curve->a || !curve->b)
456 	nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
461 		if (!EC_GROUP_get_curve_GFp(group, NULL, tmp_1, tmp_2, NULL))
470 		if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL))
533 	if (group->seed)
543 		if (!ASN1_BIT_STRING_set(curve->seed, group->seed,
544 		                         (int)group->seed_len))
572 static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group,
605 	if (!ec_asn1_group2fieldid(group, ret->fieldID))
612 	if (!ec_asn1_group2curve(group, ret->curve))
619 	if ((point = EC_GROUP_get0_generator(group)) == NULL)
625 	form = EC_GROUP_get_point_conversion_form(group);
627 	len = EC_POINT_point2oct(group, point, form, NULL, len, NULL);
638 	if (!EC_POINT_point2oct(group, point, form, buffer, len, NULL))
655 	if (!EC_GROUP_get_order(group, tmp, NULL))
668 	if (EC_GROUP_get_cofactor(group, tmp, NULL))
693 ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *group,
716 	if (EC_GROUP_get_asn1_flag(group))
721 		tmp = EC_GROUP_get_curve_name(group);
737 		     group, NULL)) == NULL)
1070 	EC_GROUP	*group  = NULL;
1080 	if ((group = ec_asn1_pkparameters2group(params)) == NULL)
1091 		*a = group;
1094 	return(group);
1153 		if (ret->group)
1154 			EC_GROUP_clear_free(ret->group);
1155 		ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
1158 	if (ret->group == NULL)
1193 		ret->pub_key = EC_POINT_new(ret->group);
1203 		if (!EC_POINT_oct2point(ret->group, ret->pub_key,
1233 	if (a == NULL || a->group == NULL || a->priv_key == NULL)
1273 			a->group, priv_key->parameters)) == NULL)
1290 		tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
1305 		if (!EC_POINT_point2oct(a->group, a->pub_key,
1343 	return i2d_ECPKParameters(a->group, out);
1369 	if (!d2i_ECPKParameters(&ret->group, in, len))
1382 	if (a == NULL || (*a) == NULL || (*a)->group == NULL)
1391 		(ret->pub_key = EC_POINT_new(ret->group)) == NULL)
1396 	if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL))
1418         buf_len = EC_POINT_point2oct(a->group, a->pub_key,
1434         if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form,