The essence of the article is to protect the key by periodic replacement. The problem is that an observer (in our case, an attacker) can observe the system for a long time and accumulate information, which leads to the accumulation of information leakage. The longer one key remains in use, the more dangerous it becomes (by the way, we will also talk about the implementation of Zk) The article is devoted to finding the optimal moment for replacing the key, including game theory (attacker / defender), and three security modes: Insufficient accuracy of FHE parameters, replacing the key will not help 💫 Re-key window - static noise is not enough, replacing keys is effective, this moment is optimal FHE parameters are strong enough, in this case, noise provides protection, the key can not be changed https://t.co/JZh6fzPIKr