Yes there is. A hash function does protect a user's password. If you don't believe me, consider this hash function H(A) = (A>>1)&0xFFFFFFFF There. Hash funct

Yes there is. A hash function does protect a user's password. If you don't believe me, consider this hash function H(A) = (A>>1)&0xFFFFFFFF There. Hash function. It sends any input to a 32 bit value. Would you use it for your password though? No. I certainly would not. Granted, that is an incredibly weak example, but it's one that's easy to see why it's weak, and thus why a hash function does protect a user's data.