For example , early versions of Fast Syndrome Based Hash turned out to be insecure .
Even a reduction to a problem with hard average complexity offers only limited security as there still can be an algorithm that easily solves the problem for a subset of the problem space .
Early versions of Fast Syndrome Based Hash turned out to be insecure .
Even a reduction to a problem with hard average complexity offers only limited security as there still can be an algorithm that easily solves the problem for a subset of the problem space .