Clause 6.2 of the Tower of Fantasy Terms of Service typically forbids:
Once the key was public, modding tools were updated to include it. This allowed the tools to decrypt the bundles, extract the assets, and re-encrypt them for use in the game. This restored the ability for players to use custom skins and mods, provided they were willing to engage with the somewhat technical process of decryption and repacking. tower of fantasy aes key
On the darker side, access to the AES key allows cheat creators to inspect network structures. By understanding how the client sends damage calculations or player positions (encrypted via AES), cheaters can craft exploits like: Clause 6