Security through obscurity is not fool proof, but neither is cryptography in general. It's all about making the problem as difficult as reasonably possible. Som

Security through obscurity is not fool proof, but neither is cryptography in general. It's all about making the problem as difficult as reasonably possible. Someone could guess a private key by incredible luck according to Murphy's law and while the probability of that happening is so extremely improbable, it is not zero, and therefore not foolproof.