Reverse engineering yes, straight reusing of the reversed code (as the code author did in some cases, by his own admission) no. You can't take a piece of someo

Reverse engineering yes, straight reusing of the reversed code (as the code author did in some cases, by his own admission) no. You can't take a piece of someone's code, decompile it, use it in your own project and then claim you own a copyright on it.