Even assuming those are flawless, lifting keys is still O(n) in the key size, and the battle is just increasing the constant factor enough to make it unattracti

Even assuming those are flawless, lifting keys is still O(n) in the key size, and the battle is just increasing the constant factor enough to make it unattractive. The problem is that lifting keys is attractive for reasons much more valuable than game cracking, so after a few years they should always be assumed compromised.