-/* crypto/ec/ec_check.c */
/* ====================================================================
* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
*
int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
{
int ret = 0;
- BIGNUM *order;
+ const BIGNUM *order;
BN_CTX *new_ctx = NULL;
EC_POINT *point = NULL;
+ /* Custom curves assumed to be correct */
+ if ((group->meth->flags & EC_FLAGS_CUSTOM_CURVE) != 0)
+ return 1;
+
if (ctx == NULL) {
ctx = new_ctx = BN_CTX_new();
if (ctx == NULL) {
ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_GENERATOR);
goto err;
}
- if (!EC_POINT_is_on_curve(group, group->generator, ctx)) {
+ if (EC_POINT_is_on_curve(group, group->generator, ctx) <= 0) {
ECerr(EC_F_EC_GROUP_CHECK, EC_R_POINT_IS_NOT_ON_CURVE);
goto err;
}
/* check the order of the generator */
if ((point = EC_POINT_new(group)) == NULL)
goto err;
- if (!EC_GROUP_get_order(group, order, ctx))
+ order = EC_GROUP_get0_order(group);
+ if (order == NULL)
goto err;
if (BN_is_zero(order)) {
ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_ORDER);